Seismic Processing Workshop

 

 

 

 

 

 

 

 

 

 

SPW™

 

V 3.4

October 2016

 

 

 

 

 

 

 

 

 

 


About This Manual

 

This manual is organized into two sections. The first section is a user’s manual for the SPW Flowchart application. The second section is a reference manual that describes each of the processing steps and associated parameters in the SPW Processing library. 

 

 

 

 

Parallel Geoscience Corporation

PO Box 5989

Incline Village, NV 89450

 

Tel: +1.541.421.3127

E-mail: support@parallelgeo.com

 

Web: http://www.parallelgeo.com

 

 

SPW, Seismic Processing Workshop, SPW Flowchart, SPW Executor, are trademarks of Parallel Geoscience Corporation. All other products are trademarks of their respective companies.

 

This manual is proprietary information of Parallel Geoscience Corporation and is for the internal use only by licensed purchasers of SPW products.

 

 

 

© 2016 Parallel Geoscience Corporation


 

Contents

 

Seismic Processing Workshop............................................................................................ 1

About This Manual...................................................................................................................... 2

Introduction to SPW.................................................................................................................. 11

Product Support......................................................................................................................... 12

SPW Flowchart................................................................................................................. 13

SPW Installer Available Online................................................................................................ 13

Installing SPW on Windows..................................................................................................... 15

Creating or Selecting a Project.................................................................................................. 21

SEG Y Processing Format........................................................................................................ 25

Main Flowchart Window.......................................................................................................... 29

Tool Bar................................................................................................................................. 29

Processing Categories........................................................................................................... 32

Processing Steps Lists........................................................................................................... 33

Building Processing Flows.................................................................................................... 33

Setting Processing Step and Data Step Parameters............................................................... 34

Running a Flow..................................................................................................................... 35

Console Display.................................................................................................................... 35

Menu Items................................................................................................................................ 36

FlowChart Menu....................................................................................................................... 36

Edit Current Project............................................................................................................... 37

SEG Y Analyzer.................................................................................................................... 38

SEG D Analysis.................................................................................................................... 41

SPS Analysis......................................................................................................................... 43

The Display Menu..................................................................................................................... 48

Displaying Seismic Data....................................................................................................... 48

The Display Configuration Wizard....................................................................................... 50

The Seismic Display............................................................................................................. 51

Seismic Display Control Panel.............................................................................................. 53

Left Side of the Seismic Display Control Panel.................................................................... 54

Center of the Seismic Display Control Panel – Sort Keys.................................................... 55

Select Sort Key Number........................................................................................................ 56

Sorting Keys.......................................................................................................................... 57

Data and Display Tools......................................................................................................... 58

Quick Sort Options................................................................................................................ 60

Capture an Image Tool.......................................................................................................... 62

Select Color Scale Tool......................................................................................................... 63

Create Color Scale Tool........................................................................................................ 64

Opening and Saving the Seismic Display............................................................................. 65

Attribute Maps....................................................................................................................... 67

Velocity Analysis Builder..................................................................................................... 68

Constant Velocity Stacks flow.............................................................................................. 69

Velocity Semblance flow...................................................................................................... 71

CMP Gathers flow................................................................................................................. 72

Execution............................................................................................................................... 72

The Survey Menu...................................................................................................................... 74

The SPS Database..................................................................................................................... 75

The Image Database.............................................................................................................. 76

Map Displays......................................................................................................................... 78

The Basemap......................................................................................................................... 78

Base Map Display Control Panel.............................................................................................. 81

Fold Maps.............................................................................................................................. 83

Compute Fold Difference...................................................................................................... 85

The Picking Menu..................................................................................................................... 85

The Wells Menu........................................................................................................................ 89

VSP Geometry Definition..................................................................................................... 92

The Help Menu.......................................................................................................................... 93

Displaying Spreadsheets of Auxiliary Data.............................................................................. 94

Early Mute Functions............................................................................................................ 95

Receiver Statics..................................................................................................................... 96

Source Statics........................................................................................................................ 97

Velocity Functions................................................................................................................ 98

SPS Observers Notes............................................................................................................. 99

SPS Receiver Locations...................................................................................................... 100

SPS Source Locations......................................................................................................... 102

Running the Flowchart............................................................................................................ 104

Naming and Saving a Flow................................................................................................. 104

Executing a Flow inside the Flowchart................................................................................... 106

Executing a Flow on a Cluster............................................................................................ 107

Example 3D Processing Flows................................................................................................ 108

Flow 1 - Vertical Geometry................................................................................................ 110

Flow 2 – Bandpass Filtering and Spherical Divergence Correction................................... 119

Flow 3 – Normal Moveout Correction and Vertical Stacking............................................ 123

Flow 4 – Create Time Slice................................................................................................. 127

Instantaneous Field QC Capabilities and Procedures............................................................. 131

Real Time Processing.......................................................................................................... 131

Real Time Seismic Displays............................................................................................... 133

Real Time Map Displays..................................................................................................... 134

FTP Connection...................................................................................................................... 135

Sending Reports via FTP in Real Time............................................................................... 136

Sending Image Files via FTP in Real Time........................................................................ 138

Troubleshooting...................................................................................................................... 139

No License Key Available.................................................................................................. 139

Killing the Flowchart Process............................................................................................. 139

The Processing Library:.................................................................................................. 141

Amplitude Adjustment Steps.......................................................................................... 142

AVA Calculator....................................................................................................................... 143

Amplitude Equalization.......................................................................................................... 145

Amplitude Versus Angle......................................................................................................... 147

Angle Gather........................................................................................................................... 150

Apply Gain.............................................................................................................................. 152

Automatic Gain Control.......................................................................................................... 154

Clipping................................................................................................................................... 156

Offset Amplitude Corrections................................................................................................. 157

Random Noise......................................................................................................................... 160

Spherical Divergence.............................................................................................................. 162

Surface Consistent Gain Corrections...................................................................................... 164

Trace Header Amplitude Math................................................................................................ 167

Windowed AGC...................................................................................................................... 168

Windowed Trace Balance....................................................................................................... 170

Creating and Editing Auxiliary Data File....................................................................... 173

Creating and Editing Auxiliary Data Files.............................................................................. 173

SPS Point Record.................................................................................................................... 190

Creating Card Data Using Excel............................................................................................. 192

Auxiliary Data A-P.......................................................................................................... 199

CMP Flex Locations............................................................................................................... 199

CMP Statics............................................................................................................................. 201

Early Mutes............................................................................................................................. 203

Exclusion Zones...................................................................................................................... 205

FK Mutes................................................................................................................................. 207

Field File Statistics.................................................................................................................. 208

First Break Times.................................................................................................................... 211

Gain Curves............................................................................................................................. 213

Horizon File............................................................................................................................. 215

Line Definition File................................................................................................................. 216

Offset Gain Corrections.......................................................................................................... 218

PP NHMO Eta Function.......................................................................................................... 220

PP NHMO Gamma Function.................................................................................................. 222

Polygon Definition.................................................................................................................. 223

Auxiliary Data R-Z.......................................................................................................... 225

Receiver Gain Corrections...................................................................................................... 226

Receiver Statics....................................................................................................................... 229

SPS Observer Notes................................................................................................................ 231

SPS Receiver Locations.......................................................................................................... 233

SPS Source Locations............................................................................................................. 236

Source Gain Corrections......................................................................................................... 238

Source Statics.......................................................................................................................... 241

Surgical Mutes......................................................................................................................... 243

Tail Mutes............................................................................................................................... 245

UKOOA P1 90........................................................................................................................ 247

Velocity Function.................................................................................................................... 247

Window Definition.................................................................................................................. 250

Display Steps................................................................................................................... 251

Frequency Slices to Time Traces............................................................................................ 251

Real Time Amplitude Spectrum Plot...................................................................................... 253

Real Time Data Quality Analysis........................................................................................... 254

Real Time Near Trace Display................................................................................................ 258

Real Time Quality Analysis Statistics Map............................................................................ 262

Real Time Quality Analysis Statistics Plot............................................................................. 266

Real Time Receiver Attribute Map......................................................................................... 270

Real Time Receiver Spread..................................................................................................... 275

Real Time Seismic Display..................................................................................................... 280

Real Time Source Attribute Map............................................................................................ 284

Real Time Stack Display......................................................................................................... 289

Real Time Trace Header Map................................................................................................. 293

Time Slices.............................................................................................................................. 298

Time Slices to Traces.............................................................................................................. 300

Editing Steps................................................................................................................... 302

3D Missing Data Interpolation................................................................................................ 302

Automatic Amplitude Edit...................................................................................................... 304

Automatic Trace Edit.............................................................................................................. 306

Coherent Noise Attenuation.................................................................................................... 309

Dataset Math........................................................................................................................... 311

Despike.................................................................................................................................... 312

Dominant Frequency Edits...................................................................................................... 314

F-X Trace Interpolation........................................................................................................... 318

Frequency Trace Edits............................................................................................................. 320

Interpolate Dead Traces.......................................................................................................... 324

Kill Traces............................................................................................................................... 325

Phase Rotation......................................................................................................................... 326

Remove DC Bias..................................................................................................................... 328

Remove Reverberation............................................................................................................ 331

Resample Seismic................................................................................................................... 333

Reverse Traces........................................................................................................................ 335

Revive Dead Traces................................................................................................................ 336

S/N Based Record Edits.......................................................................................................... 338

Trace Header Calculation........................................................................................................ 342

Trace Header Logic................................................................................................................. 344

Trace Header Math.................................................................................................................. 347

Trace Header Resequencing.................................................................................................... 349

Trace Sample Math................................................................................................................. 351

Vibroseis Correlation.............................................................................................................. 352

Filtering Steps................................................................................................................. 356

2D Damped Least Squares Filter............................................................................................ 356

2D Median Filter..................................................................................................................... 358

3D Diffusion Filter.................................................................................................................. 360

3D Median Filter..................................................................................................................... 362

Adaptive Radon Demultiple.................................................................................................... 364

Apply F-K Filter...................................................................................................................... 370

Apply F-K Velocity Filter....................................................................................................... 373

Butterworth Dip Filtering........................................................................................................ 377

Butterworth Filtering............................................................................................................... 379

Coherence Enhancement Filter............................................................................................... 382

Convolution............................................................................................................................. 383

Cross Correlation..................................................................................................................... 384

Derivative................................................................................................................................ 387

Diffusion Filter........................................................................................................................ 388

F-K       Spectrum...................................................................................................................... 390

F-X Deconvolution.................................................................................................................. 392

F-X Median Filter................................................................................................................... 395

F-X Noise Attenuation............................................................................................................ 397

F-X-Y Median Filter............................................................................................................... 399

Footprint Filter........................................................................................................................ 401

Horizontal Median Filter......................................................................................................... 404

Integration............................................................................................................................... 406

Notch Filter............................................................................................................................. 406

Quadrature Filter..................................................................................................................... 409

Radial Transform Filter........................................................................................................... 410

Radon Demultiple................................................................................................................... 414

Ricker Filter............................................................................................................................ 419

Swell Statics Correction.......................................................................................................... 421

Tau-p Inverse Transform......................................................................................................... 422

Tau-p Transform..................................................................................................................... 424

Time Variant Bandpass........................................................................................................... 428

Time Variant Butterworth....................................................................................................... 430

Velocity-Guided Butterworth Filter........................................................................................ 431

Velocity-Guided Noise Rejection Filter.................................................................................. 434

Geometry Steps............................................................................................................... 437

Bin Fold Limit......................................................................................................................... 440

CMP Binning........................................................................................................................... 443

CMP Fold - Data..................................................................................................................... 450

Coordinate Conversion............................................................................................................ 452

Crooked Line Binning............................................................................................................. 457

Extract Geometry.................................................................................................................... 459

Geometry Definition............................................................................................................... 461

OBS Positioning...................................................................................................................... 468

Offset Binning......................................................................................................................... 470

Simple Marine Geometry........................................................................................................ 472

UKOOA P1/90 Geometry....................................................................................................... 474

Update Marine Streamer......................................................................................................... 476

Update Receiver Positions...................................................................................................... 477

Update Source Positions......................................................................................................... 480

Migration Steps............................................................................................................... 482

2D Paraxial Ray Tracing......................................................................................................... 482

2D Pre-Stack PSPI Migration................................................................................................. 485

3D Finite Differences Ray Tracing......................................................................................... 489

Constant Velocity PSKTM..................................................................................................... 491

Convert Time to Depth............................................................................................................ 493

FK Dip Moveout..................................................................................................................... 496

PSPI Migration........................................................................................................................ 496

Phase Shift Migration.............................................................................................................. 500

Post-Stack Kirchhoff Time Migration.................................................................................... 503

Pre-Stack Kirchhoff Depth Migration..................................................................................... 506

Pre-Stack Kirchhoff Time Migration...................................................................................... 508

Stolt Migration........................................................................................................................ 511

Multi-component Steps................................................................................................... 514

Apply PS Non-hyperbolic Moveout........................................................................................ 515

CCP Binning - Asymptotic..................................................................................................... 519

CCP Binning - Dynamic......................................................................................................... 522

Constant Gamma Stacks......................................................................................................... 525

Converted Wave Receiver Statics........................................................................................... 528

Crooked Line Asymptotic CCP Binning................................................................................. 530

Crooked Line Dynamic CCP Binning..................................................................................... 532

Horizontal Component Rotations............................................................................................ 535

Mutes Steps..................................................................................................................... 539

Apply Early Mute.................................................................................................................... 539

Apply Surgical Mute............................................................................................................... 543

Apply Tail Mute...................................................................................................................... 545

Build Mask Model................................................................................................................... 547

Quality Analysis Steps.................................................................................................... 550

Amplitude Analysis................................................................................................................. 551

Amplitude Spectrum............................................................................................................... 553

Autocorrelation........................................................................................................................ 556

Dead Trace Analysis............................................................................................................... 558

Frequency Analysis................................................................................................................. 560

Signal to Noise........................................................................................................................ 563

Signal to Noise Attribute......................................................................................................... 565

Source Energy Estimation....................................................................................................... 571

Spectral Comparison............................................................................................................... 573

Trace Analysis Report............................................................................................................. 578

Seismic Data Steps.......................................................................................................... 581

AutoSeis Real Time Seismic Input......................................................................................... 582

AutoSeis Seismic Input........................................................................................................... 584

AutoSeis Seismic Ouput......................................................................................................... 585

Create Model Data.................................................................................................................. 585

Frequency Cubes..................................................................................................................... 587

Frequency Gathers................................................................................................................... 592

Frequency Maps...................................................................................................................... 596

Real Time Seismic Input......................................................................................................... 600

SEG 2 Import.......................................................................................................................... 602

SEG D Import.......................................................................................................................... 604

SEG Y Export.......................................................................................................................... 607

SEG Y Field Export................................................................................................................ 610

SEG Y Field Import................................................................................................................ 612

SEG Y Import.......................................................................................................................... 614

Seismic File............................................................................................................................. 618

Select Traces........................................................................................................................... 624

TCPIP Data Input.................................................................................................................... 626

Update SEGY Textheader....................................................................................................... 630

Virtual Tape Input................................................................................................................... 631

Spectral Attributes Steps................................................................................................. 634

Bandwidth............................................................................................................................... 634

Center Frequency.................................................................................................................... 636

Kurtosis................................................................................................................................... 637

Mean Amplitude...................................................................................................................... 639

Minimum Amplitude............................................................................................................... 640

Peak Amplitude....................................................................................................................... 641

Peak Amplitude Above Mean................................................................................................. 643

Peak Frequency....................................................................................................................... 644

Phase at Peak Frequency......................................................................................................... 646

RMS Frequency....................................................................................................................... 647

Skewness................................................................................................................................. 649

Spectral Variance.................................................................................................................... 650

Spectral Decomposition Steps......................................................................................... 653

Band Aid................................................................................................................................. 654

Bandwidth Enhancement........................................................................................................ 655

Cohen’s Class.......................................................................................................................... 655

Short-Time Fourier Transform................................................................................................ 655

Stockwell Transform............................................................................................................... 656

Wavelet Recomposition.......................................................................................................... 656

Wavelet Transform.................................................................................................................. 656

Wigner-Ville Decomposition.................................................................................................. 656

Windowed Wigner-Ville Decomposition............................................................................... 657

Stacking Summing Steps................................................................................................. 658

CMP Stack............................................................................................................................... 658

Horizontal Trace Sum............................................................................................................. 661

Median Stack........................................................................................................................... 664

Real Time CMP Stack............................................................................................................. 667

Receiver Order Stack.............................................................................................................. 669

Source Order Stack................................................................................................................. 671

Trace Mixing........................................................................................................................... 674

Statics Steps.................................................................................................................... 676

Apply Statics Shift.................................................................................................................. 677

Datum Statics.......................................................................................................................... 679

First Arrival Picking................................................................................................................ 682

First Break Auto-Picking........................................................................................................ 683

Flat Datum Statics................................................................................................................... 683

Stack-Power Optimization Statics........................................................................................... 684

Surface Consistent Residual Statics........................................................................................ 689

Trim Statics............................................................................................................................. 692

Trace Attributes Steps..................................................................................................... 695

Instantaneous Amplitude......................................................................................................... 696

Instantaneous Frequency......................................................................................................... 697

Instantaneous Phase................................................................................................................. 698

VSP Steps........................................................................................................................ 701

Apply VSP Traveltimes.......................................................................................................... 701

Calculate VSP Traveltimes..................................................................................................... 704

VSP CMP Transform.............................................................................................................. 707

VSP Corridor Stack................................................................................................................. 709

VSP Deconvolution................................................................................................................. 711

VSP Downhole Locations....................................................................................................... 713

VSP Extract Corridor.............................................................................................................. 715

VSP First Arrival Time Picks................................................................................................. 716

VSP Geometry Definition....................................................................................................... 716

VSP SPS Relation Records..................................................................................................... 719

VSP Surface Locations........................................................................................................... 721

VSP Wavefield Separation...................................................................................................... 723

Velocity Steps................................................................................................................. 727

Apply Linear Moveout............................................................................................................ 728

Apply Normal Moveout.......................................................................................................... 729

Apply PP Non-hyperbolic Moveout........................................................................................ 732

Constant Velocity Stacks........................................................................................................ 736

Create Velocity Field.............................................................................................................. 739

Extract Functions.................................................................................................................... 741

Interpolate Field...................................................................................................................... 745

MASW Calculation................................................................................................................. 748

Offset Dependent Linear Moveout.......................................................................................... 749

Residual Moveout Analysis.................................................................................................... 751

Residual Moveout Applications.............................................................................................. 755

Velocity Semblance................................................................................................................ 757

Wavelet Shaping Steps.................................................................................................... 760

Deghosting.............................................................................................................................. 760

FKK Domain Spectral Shaping............................................................................................... 763

Predictive Deconvolution........................................................................................................ 766

Predicitve Multichannel Deconvolution................................................................................. 768

Q Filter.................................................................................................................................... 770

Signature Deconvolution......................................................................................................... 772

Spectral Whitening.................................................................................................................. 774

Spiking Deconvolution............................................................................................................ 776

Spiking Multichannel Deconvolution..................................................................................... 778

Surface Consistent Decomposition......................................................................................... 780

Surface Consistent Deconvolution.......................................................................................... 783

 


Introduction to SPW

 

Welcome to Seismic Processing Workshop (SPW). SPW is a seismic processing solution written by Parallel Geoscience Corporation. SPW was originally written for the Macintosh computer platform and has been redesigned and rewritten for the third time (version 3) using the Qt by Nokia cross platform framework. SPW is currently available and has been tested on the Windows 10, Windows 7, Windows Vista, Windows XP, Windows 2003 Server, and Windows 2008 HPC Server operating systems. Linux, and Macintosh OSX versions will be available sometime in 2014.

 

The SPW version 3 Flowchart has adopted a project model for data management. Flowchart allows you to create or select a project, build processing flows, set the parameters for the processing steps and display seismic data and maps. Another significant change in SPW is the use of SEG Y format as the default native format for processing data. A simple graphical user interface reduces the learning curve and accelerates your analysis and processing time

 

The SPW system is designed to be user expandable. Parallel Geoscience Corporation will release the programming API interfaces for the SPW Flowchart version 3 to all SPW users in 2014. Since Qt is available with an open source license, this will allow for easily adding customized processing algorithms and data formats to the SPW system.

 

This document is split into two main parts; the first gives an overview of the main features of the SPW Flowchart – that is the main dialog in which processing flows are built, seismic and other data are displayed and analyzed, picks are made and where “wizards” are accessed for velocity analysis.  The second part of the document contains the help information for the processing steps that are built up to make flows.

 

 


Product Support

 

For solutions to questions about SPW, first look in this manual or consult the release notes file accompanying every software release.  If you cannot find answers in the documentation, contact Parallel Geoscience Corporation via E-mail (support@parallelgeo.com), or for time critical issues by phone (+1.541.421.3127).  The support email account is monitored daily by several people. It is the best way to get a response, since it is checked even when no one is in the office. Please be ready to provide the following information:

 

·         Your name.

·         Your company name.

·         The SPW version you are using.

·         The operating system you are using.

·         The type of hardware you are using.

·         What you were doing when the problem occurred.

·         The exact wording of any error messages appearing on your screen.

·         Any other pertinent data set information.


SPW Flowchart

 

SPW Installer Available Online

 

The SPW installer package (.msi) is available on the Parallel Geoscience web site. To access the web site, point your browser at:

www.parallelgeo.com

Select the Downloads tab and navigate to the SPW3 installer package either inside the currentrelease or betarelease directory.


 

You will see a directory listing as shown below.

 

 SPW 3 Current Release Directory

 

Finally, download and save the SPW3 msi file to your computer. 

Installing SPW on Windows

 

Run the SPW installer package (.msi) that has been downloaded from our ftp site or delivered on CD-ROM or DVD-ROM. Please note that you must uninstall any previous version of SPW 3 before you can install a new version. Do so using the Windows control panel for applications.

SPW Installer First Dialog

Click on the Next button then you will be prompted to select the installation directory.

SPW Installation Directory

 

Click on the Next button then you will be prompted to confirm the installation.

 

SPW Installation Confirmation

 

Click on the Next button then the installation will be performed and you will show the status of the installation.

SPW Installation Status

Finally, the Installation Complete message will be shown. Now SPW is ready for use.

SPW  Installation Complete

When the installation has finished, your SPW directory will be populated with the files and dll libraries required for running SPW.

 

SPW 3 Install Directory

If you do not have the Sentinel software driver installed on your system, please install it by running the Sentinel Protection Installer executable (.exe) in the SPW3 directory. This driver is required to recognize and access the Sentinel USB security key used for licensing of SPW.


 

The SPW installation automatically creates a menu item to run Flowchart.exe.

 

Flowchart Menu Item
SPW User Directory

 

The first time the Flowchart application is executed after the installation, a number of directories and files are copied to the documents home directory on Windows. This location is different for each version of Windows and also is different depending on the operating system language. The images shown here are all for Windows 7 UK English version.

 

Files Installed into SPW Documents Home Directory

 

 

The files written into the …/SPW3/Documents/SPW3InstallBackupFiles are original backup copies of all the color scales, the online documentation, a SPW3 Project directory (more about projects later), a default SEGY format definition file and a mp3 file that is played as a warning in several processing steps inside SPW3. When Flowchart.exe is executed, any of these files and directories that do not already exist in the user’s home documents directory will be automatically copied to the users home documents directory.

 


 

 

Files in the Users Home Directory (MyDocuments/spw)

 

If you have previously modified or edited any of the files or projects in a prior SPW 3 installation, these modified files in the home directory are retained and will not be overwritten during subsequent installations.

Creating or Selecting a Project

 

The Flowchart application requires you to either select an existing project or to create a new project when it is first started before you can start building processing flows and analyzing data.

 

Flowchart Startup

 

After the first time you run Flowchart, there is usually a default project defined, which is automatically set at startup, and this dialog will not appear. Whenever you select a project or create a new project, you will be prompted, if you wish, to set this project as your default.

 

Set As Default

 

To change the current project or to create a new project, choose either the Select Project or the Create Project command from the FlowChart menu.

 

 

Select and Create Project Menu Commands

 

When you perform the Select Project command, a list of the project xml files available in your ProjectFiles directory will be shown. Select the project you wish to work on and Open the project.

 

Select Project XML File

 

If you are starting in a new area or starting FlowChart for the first time, you will need to choose the Create Project command from the FlowChart menu. When you issue this command, the following dialog will appear. The main project directory (in this case New3DProject), will be created inside the selected project root directory. The project root directory can be any mounted disk on your system including networked disk drives.

 

Create Project Dialog

 

 

It is important the Data dimensions, Units and Survey type are entered correctly since these affect how further options are presented and how the some of the data functions operate.  Data units must be specified as either feet or meters; there is no mixing of these units in SPW.   These project settings can be updated later using the Edit Project option.

 

The Create Project feature builds the directory structure shown below:

 

Project Directory Structure

 

The directories are used to store project files, data, etc.,

 

·         Auxillary – velocity file, statics files, etc.,

·         Flows – flowcharts,

·         Images – any output image files (jpg, png, bmp, gif, etc.,).

·         Report – reports output by the analysis processing steps,

·         Seismic – output seismic data files generated during processing are automatically stored here. The corresponding output data index files are stored here too.

·         Seismic.FieldData – place input field data files (SEG Y, SEG D, SEG 2, etc.) here. The corresponding field data index files are stored here too.

·         Survey – SPS or UKOOA files are placed here so that the project can recognize them and to be able to generate basemaps which are also placed here. Usually, the SPS files have extensions of .sps for Source Survey files, an extension of .rps for Receiver Survey files and an extension of .xps for the Cross-reference (observers’ notes) files. Corresponding survey data index files are stored here too.

 

The Edit Project command allows you to easily move projects. As an example, if you have built a project on a portable disk and then mount the disk again but it is a different drive letter, you can edit the project settings and define the new project root directory. All references to files in the project directories are relative to the root directory path.

Edit Project Dialog

 

SEG Y Processing Format

SPW uses the SEG Y format as its internal processing file format. Of course data may be read in from other formats, such as SEG 2 and SEG D, but the internal files used in the processing are SEG Y. SEG Y files may be input directly from recording systems or from other seismic software and SEG Y files written by SPW may be read directly by other software such as interpretation packages which use SEG Y. By default, the SEG Y Standard format file delivered as part of the SPW installation is used for decoding the SEG Y files. You can select any SEG Y format file existing in the SegyFormats or you can build a customized format file to read non-standard SEG Y files.

 

SEG Y Import Dialog – available from the SEGY Import processing step.

 

An index file is created for each SEG Y file used in SPW. These files contain important information used in the processing and are required to be present for processing and displays. If they are not present, they will be created by the processing or you may create them by using the Build Index command in the SEG Y Import parameter dialog. Note that the Sorting keys must be set to valid header fields before you press the Build SEG Y Index button and build the index file.

 

The SEG Y file format is defined by mappings of the SEG Y binary and trace header positions and these are saved in XML file format. A default prebuilt SEG Y format definition files is delivered with SPW (others are available via the Parallel Geoscience web site (www.parallelgeo.com)).

 

SegyFormats Directory

 

You can create new format definitions by modifying existing file using the Create format file command in the SEG Y Analyzer or using the Create New SEG Y Format command in the SEG Y Import dialog:

Create SEG Y Format Dialog

 

Main Flowchart Window

 

The SPW FlowChart application allows you to build processing sequences commonly referred to as flows, set the parameters for processing steps, run the flows you have created, and create displays of maps and seismic data. The FlowChart application is a tabbed interface where multiple processing flows, seismic displays and map displays may be open at the same time. The FlowChart graphical user interface simplifies the process of building a processing flow to a few mouse clicks.

 

FlowChart User Interface

 

Tool Bar

 

The Tool Bar contains tools for controlling the building and selecting of flowchart items. The function of the tools from left to right are – Select, Link, Delete, Select All, Undo, Redo. Clicking on a tool will change the interface mode, enabling you to use that tool. The tab key allows you to quickly switch between Select and Link. The selection and linking tools are used in building a processing flow and Delete allows for deleting either flow items or flow links from a processing flow.

 

Tool Bar

 

cursor

Selection Tool – can select either a processing step or the link between the processing steps. When selected, the Selection Tool button will appear depressed and the step or link can be selected by clicking the left mouse button with the pointer over the item to be selected. Selected items then appear highlighted. Multiple items can be selected by clicking with the left mouse button and then dragging the pointer – this is illustrated in the flow shown below where the Apply Normal Moveout, Automatic Gain Control and the Apply Early Mute items have been selected along with two pick files that apply to selected processing steps.

 

link

Linking Tool – allows you to define the data flow between items on the flowchart. When selected, the Linking Tool button will appear depressed. To link between two steps, click in the first step and then click in the second step.  You may switch between the Selection and Linking tools by either clicking on the icons on the Tool Bar or by pressing the Tab key on the keyboard.

 

delete

Delete Tool –removes selected items or links from the flowchart. Once selected, you can remove an item or a link by either clicking on the Delete Tool on the tool bar or by pressing the delete key on the keyboard. On many Windows keyboards the backspace key is defined as the delete key. If your delete key does not work then try the backspace key instead. Note: all selected items will be deleted.

clear_all

Select All – selects all items on the flowchart; all items will be selected and highlighted; the links will become bright green, and the flow items will be enclosed by a dark black box and shown in light blue, the auxiliary data items will also be enclosed by dark black box.

 

arrow_undo

Undo – Not Implemented.

arrow_redo

Redo – Not Implemented.

 

Selecting Items and Links

 

Once selected, you can remove an item or a link by either clicking on the Delete Tool on the tool bar or by pressing the delete key on the keyboard. On many Windows keyboards the backspace key is defined as the Delete. If your Delete key does not work then try the Backspace key instead. Note: all selected items will be deleted.

 

Processing Categories

 

The Processing Categories on the right side of the flowchart window (enclosed within the red rectangle) contains the categories of processing steps available in SPW.

 

The Processing Categories

 

When you click on a button in the Processing Categories, such as Geometry, the list of processing steps in that category will appear in place of the Processing Categories list. To navigate back to the Processing Categories list, simply click on the Processing Categories button containing an up arrow at the top of the Processing List.

 

Processing Steps Lists

 

When you click on the desired processing step button, it will appear highlighted in light blue as shown below. To place the item on the flowchart, select it with a single mouse click, and then click on the flowchart where you wish to place the item. You may also double mouse click on the item in the processing step list and it will be placed below the last item you selected on the flowchart. The item may then be dragged on the flowchart to correctly position it into your processing sequence.

 

Processing Step List

Building Processing Flows

 

To build a flow, start by selecting the steps you wish to use in the processing step lists and placing them on your flowchart. Next, using the Link Tool, connect each item in the flow as you wish for the data to move through the processing sequence. The process for using the Link Tool involves two steps: after selecting the Link Tool by clicking on it, click once on the point of origin, then click once on the destination, and the arrow will appear.

 

Example Processing Flow in the Main FlowChart Window

 

Setting Processing Step and Data Step Parameters

 

To set the parameters for a processing step, double left click on the step itself. This will display the dialog for setting the processing step parameters. Each dialog contains the parameters specific to that step. These parameters are set using numeric data entry fields, radio button controls, check boxes and drop down list boxes.

 

 

Step Parameter Dialog

Running a Flow

 

To run a flow, first select one of the steps in the flow (or press the “select all” button clear_all), and then press the Execute button.  A check is then made to ensure that the flow is correctly set up (e.g. that any step requiring input or output files has these set and that the links between flows are in place) before the flow is saved and then executed.

 

Flows can be terminated by pressing the Abort button (or the End Job button).

 

Flows can also be saved before they are executed by pressing the Save button.

 

 

Console Display

 

The Console Display, at the bottom of the flowchart, shows the messages from the execution of your flows. The first messages will show the list of processing steps being executed, followed by any output warnings and the status while the processing steps are executed. Critical messages may be highlighted in red in the console window.

 

.

The FlowChart Console Display

 

Menu Items

 

The SPW application menu bar contains the following sub menus:

 

·         FlowChart

·         Processing

·         Display

·         Analysis

·         Survey

·         Picking

·         Wells

·         Help

 

SPW Menu

 

 FlowChart Menu

 

The FlowChart menu shown below has a number of tools available for project management.

 

FlowChart Menu

 

The Select Project and Create Project commands let you select an existing project or create a new project. The Edit Current Project command allows you to edit the currently selected project, whereas Delete a Project will open a file selector from where a selected project can be deleted. The Set startup project defines the default project to be used when the application launches. Close Current Tab will close the active tab in the interface.

 

The remaining Flow Chart menu items are discussed below.

 

Edit Current Project

 

The Edit Current Project option is available which can be selected and which will open the “Edit Project” dialog. Usually, the project will have been configured and this option shouldn’t be needed, but it can be used to set up items such as the directory of the FieldQCLite project and the project’s depth and distance units.

 

The Edit Project Dialog

 

On the left of the Edit Project dialog are several different options – click on these (e.g. Survey Information) to change the parameters that can be configured.

 

SEG Y Analyzer

 

The SEG Y Analyzer allows you to quickly and efficiently open and investigate a SEG Y format file.

SEG Y Analyzer

After you use the File Browse to select a file, then the Analyzer entries are populated with the information retrieved from the dataset.

SEGY Analyzer – Trace Headers tab

 

Using the tabs in the dialog, you can display the SEG Y text header (also referred to as the EBCDIC header), the binary header, multiple selected trace headers or a display of the seismic traces.

 

SEG Y Analyzer – Seismic View tab

The display of the Binary Header allows you to look at the values as either 2 byte or 4 byte words.

Binary Header Values Display

 

You also can also create a spectrum of a selected range of traces in the Sample format analysis tab of the Binary header display

Spectra Display

 

The Histogram analysis tab allows you to see the amplitude distribution of the selected data traces and verify the data has correct and valid amplitudes.

 

Histogram Analysis Display

 SEG D Analysis

 

The SEG D Analyzer has a similar to the SEG Y Analyzer and allows you to analyze the various parts of a SEG D file structure.

 

SEG D Analyzer

 

Unlike the SEG Y Analyzer, when using the SEG D Analyzer you first select the directory containing the SEG D files and then use the Filename combo box (see highlighted red rectangle above) to select individual SEG D files to analyze.


 

SPS Analysis

 

The SPS Analyzer is allows you to analyze source, receiver and relation SPS files and to define the formats of these files.

 

SPS Analyzer Menu

 

The SPS Analyzer defines the column positions of the SPS format and shows you the definitions of the columns as well as the data value ranges for each column as you edit the forma. When finished, Save the format and it is automatically associated with this specific SPS file. Every time this file is read, the format file will be used to decode the data in the file.

SPS Analyzer

Additional SPS analysis is available as Flowchart steps within the Auxiliary Data (R-Z) section of the processing steps.  These are described in the “Displaying Spreadsheets of Auxiliary Data” section further down this first part of the manual.

 

Further SPS tools such as the database and producing maps are available in the “Survey Menu” section, described further below.  Tools for formatting the SPS files are described in the “Displaying Spreadsheets of Auxiliary Data” section of this manual.
Processing Menu

 

The Processing menu contains the commands for working with the flowcharts.

 

Processing Menu

The New processing tab command creates tabbed windows for opening or building flowcharts. The Open flow command will open an existing flow in the current flowchart tab (flows are read from the project’s Flows directory). The Close flow command closes the current flowchart but leaves the tab open. The Save command saves the current flow (a check is made before saving to ensure that the flow is valid, e.g. that the required input and output links are made and that input and output files have been specified). If it is an existing file, then it is overwritten. If it has not been named then it issues the Save As command and you are then prompted for a file name.

 

The View trace headers command opens a spreadsheet view of the trace headers of a selected SEG Y file (you select a SEG Y file by selecting the Seismic File in the flowchart). If you do not have a SEG Y file currently selected it does nothing

 

View Trace Headers

 

The Execute command runs the selected flow. Currently, only one flow segment is allowed in a flowchart. A flow segment is defined as a part of a flow originating with an input seismic disk file and ending in an output seismic disk file. If a flow segment has not been selected then then a warning message will be given when Execute is pressed:

 

FlowChart Error Message when no flow segment has been selected

 

 

The Submit to cluster command sends the job to a remote cluster system. The job Scheduler command, the Parameter Testing command and the Configure real time displays command are currently disabled and are in the process of being implemented.

Executing a flow segment

 

The Preferences command displays the Processing Preferences dialog. This dialog is used to control the threading for local execution and the number of cpus used for remote cluster execution. Also, there are controls on the reporting of processing information into the console.

 

Processing Preferences Dialog

The Display Menu

 

The Display menu contains commands that allow you to display your seismic data and control the display.

 

 

The Seismic Display Menu

 

The New Seismic Display command creates a new display tab in the Flowchart Window. The Close Display command removes the current active display tab from the SPW Window.

 

Displaying Seismic Data

Seismic data are displayed in a Display page within the main Flowchart dialog.  The display page can split into two or more views, either located side by side or above each other, so that two or more seismic files (or multiple views of the same file) can be viewed simultaneously.  The Display page can also show views containing other plots such as SEG Y headers, map views, bin coverage plots, etc.  More than one Display page can be open – click on the Display tab to select the page to view.

 

A Display page showing three views containing data sorted into inline/crossline, a near offset VSP and a base map generated from SPS data.

 

There are two ways to select a SEG Y file for display, either directly from a seismic data item in a flow chart, or by using a File Selection dialog to locate and open a file. From the flowchart, first locate a seismic data item, then click on it and choose the Display <filename> option.

 

Context Menu for Seismic Display

 

Alternatively, click on the seismic item in the Flowchart and then from the Display menu, select Display Selected File (you must have the flow chart displayed for this option to work).

 

Display Selected File Command

 

To locate and open a SEG Y file directly without using a Flowchart item, select Open Seismic File from the above Display menu. This brings up a file selector dialog that you can use to locate and open the SEG Y file directly.

 

The Display Configuration Wizard

 

When you open a seismic file for display, whether via the Flowchart or from the Display menu and no Display page is currently open in the Flowchart dialog, a new Display Page is automatically opened and the display view added.  If one or more Display pages exist then the Display Configuration Wizard is opened which enables you to select where the new display view will be placed.  The view can be added to a new display page (select “Add Display Page” from the viewer, or the view can be added within an existing page.  Use the “Add New View” button to place the page to the right of the existing pages, or the arrow buttons to select where to locate the view.

 

The Display Configuration Wizard

The Seismic Display

 

The SPW Seismic Display is a very simple but powerful display tool allowing you to freely adjust the display parameters and step through, or scroll through, your data set.

Variable Area Wiggle Seismic Display

 

Variable Density Seismic Display

When traces are displayed, move the pointer over a trace and right click to show a popup menu that allows you to view the samples or header values of the selected trace:

 

Trace Header Values Popup Dialog

 

Seismic Display Control Panel

 

The SPW 3 Seismic Display Control Panel gives you options to select, set, or adjust parameters to best view your data.

 

Seismic Display Control Panel

 

Left Side of the Seismic Display Control Panel

 

Left Side of the Seismic Display Control Panel

Trace type – interactively adjusts the seismic display by type using a drop down menu.

Variable area is a “standard” black and white wiggle display with area fill.

Variable density is a color display, usually shown with a red-white-blue color scale, although you can change and setup new color scales with the color scale editor and selectors described below.

Trace polarity – interactively adjusts the seismic display by polarity using a drop down menu.

Normal trace polarity interactively retains the polarity of seismic data on a trace-to-trace basis.

Reverse trace polarity interactively reverses the polarity of seismic data on a trace-to-trace basis.

 

Orientation – interactively adjusts the seismic display by orientation using a drop down menu.

                Left-to-right displays the traces in ascending order starting from the left.

                Right-to-left displays the traces in ascending order starting from the right.

Amplitudes – interactively adjusts the seismic display by amplitude using a drop down menu.

                True amplitude displays the data at absolute input amplitude – usually millivolts.

Relative amplitude scales each trace to the same maximum amplitude.

                Trace scaling applies an AGC to the trace using the Window length parameter.

Reference – interactively adjusts the seismic display by reference using up and down arrows, or numerical data entry.

Horizontal scale – interactively scales seismic data horizontally on a trace-to-trace basis using up and down arrows, or numerical data entry.

Vertical scale – interactively scales seismic data vertically on a trace-to-trace basis using up and down arrows, or numerical data entry.

Display gain – interactively gains seismic data on a trace-to-trace basis using up and down arrows, or numerical data entry.

Window length – interactively adjusts the length of the seismic display window using up and down arrows, or numerical data entry.

Trace excursion – interactively adjusts how far the seismic data extends on a trace-to-trace basis using up and down arrows, or numerical data entry.

Primary Anno – interactively changes the horizontal annotation of the seismic data according to the primary sort key display using up and down arrows, or numerical data entry.

Secondary Anno – interactively changes the horizontal annotation of the seismic data according to the secondary sort key display using up and down arrows, or numerical data entry.

Vertical Anno – interactively changes the vertical annotation of the seismic data display using up and down arrows, or numerical data entry.

Major Time Lines – interactively adjusts how frequently the major (bold) timing lines annotate the seismic data display using up and down arrows, or numerical data entry.

Minor Time Lines – interactively adjusts how frequently the minor (fine) timing lines annotate the seismic data display using up and down arrows, or numerical data entry.

 

Center of the Seismic Display Control Panel – Sort Keys

 

Primary Sort Key Selected.

 

 

A sort key number selector will be shown for each sort key that you select. Here there’s one since only a primary sort has been chosen.  Below, a secondary sort has been selected, with the Create Record At option set to “Change in secondary”, so two sort key number selectors are shown (the data used in this example had been sorted into CMP bins).

 

 

Primary and Secondary Sort Keys Selected.

 

 

When you change the sort, you will need to select the sort key to implement the sorted selection . To quickly change the sort, you may find the Quick Sort option useful (button located in the far right button panel in the Seismic Display).

Select Sort Key Number

 

Select Sort Key Number

 

The select sort key number allows you to step through the entire list of records one by one, forwards or backwards. It also allows you to select an arbitrary primary, secondary, etc., sort key number by means of a drop down list displaying each one for quick selection anywhere in the data set.

 

Arbitrary Primary Number Drop-down List

 

Sorting Keys

 

To the right of the display control panel are drop down menus for selecting primary, secondary, etc., sort keys.

 

Display Sort Keys

 

Primary sort key – interactively adjusts the seismic display by using a drop down menu to select the first order in sequence by which the data will be sorted.

Secondary sort key – interactively adjusts the seismic display by using a drop down menu to select the second order in sequence by which the data will be sorted.

Tertiary sort key – interactively adjusts the seismic display by using a drop down menu to select the third order in sequence by which the data will be sorted.

Quaternary sort key – interactively adjusts the seismic display by using a drop down menu to select the fourth order in sequence by which the data will be sorted.

Create record at – interactively creates a record by change in primary, secondary, tertiary, quaternary, each trace, or last trace.

 

Data and Display Tools

 

There are 24 tools on the right side of the Seismic Display Control Panel which facilitate the manipulation of your data display. These are described below:

 

Data and Display Tools

 

Sort Data Using Current Sort Key – Clicking on this button changes the sort order of your data using current sort keys. When new sort keys are selected from the right side of the seismic display control panel, clicking on this button implements the selection.

Quick Sort Options – Use to quickly sort the data based on popular sorts. This will update the Primary and Secondary sort keys as necessary to yield the selected quick sort (see discussion below).

Add Trace Header Plot – Use as a toggle button to place a header display above the currently selected view. Reveals a panel at the top right of the display panel where you can select the header to plot and options to configure the header plot.

View Trace Headers – Use the right click option Trace Header Values Popup Dialog, described above.

Display Processing – Opens the Display Processing Tool which allows you to add processing steps between reading the seismic file and displaying it.  Toggle the button off to remove the processing step.

Seismic Picker – Opens the picking menu panel to the right of the display panel.

Show Location Map – opens a popup Locator Map dialog.

Geometry Quality Control – Shows a calculated first arrival based on the offset and a velocity.  Aim is to QC offsets to ensure that the near trace aligns with the data first breaks.

View LMO Guided Windows – To use, enter a velocity, start time and end time and the window will be shown in color on the data. This option is particularly useful for designing deconvolution operators that move out with offset.

Edit Seismic Traces – when toggled on use the pointer and MB1 to select trace groups to mute out. This is a temporary mute, to reverse the mute move the display record forward and back.

Reverse Trace Polarity – toggle on and off to reverse the trace polarity.

Show Dead Traces In Red – toggle on and off.

Calculate Individual Trace Spectra – when toggled on, use the pointer and MB1 to select trace groups. A popup display of the spectra of the selected traces is then shown.  Toggle off to remove the selection facility.

Calculate Spectra in a Rectangular Window – when toggled on, use the pointer and MB1 to select a trace/time window. A popup display of the spectra of the selected and gated traces is then shown. Toggle off to remove the selection facility.

Calculate Spectra in a Polygonal Window – when toggled on, use the pointer and MB1 to select a polygon. A popup display of the spectra of the trace samples within the window is then shown.  Toggle off to remove the selection facility.

Estimate Linear Velocity – when toggled on, use the pointer to select two points on the display.  The linear velocity is then shown as an overlay on the display.  Toggle off to remove the linear velocity selection and clear the velocity text. Requires an offset sort.

Estimate Hyperbolic Velocity – when toggled on, use the pointer to select two points on the display.  The hyperbolic velocity is then shown as an overlay on the display.  Toggle off to remove the hyperbolic velocity selection and clear the velocity text. Requires and offset sort.

Zoom – when toggled on, use the central mouse button or mouse tracker ball to zoom the currently selected view in or out.

Range Limit Data In the Display – when toggled on this will a panel at the top right of the display panel will be shown giving options for selecting sort keys and setting the display ranges of the keys. Multiple sort ranges can be set.  Toggle off to remove the range limit and to reset the ranges applied to each key.

Capture an Image – Opens the Setup Image Dialog box (described below).

Select or View a Current Color Scale – Opens the Select Color Tool dialog from which you can view currently available color scales and select a different scale to view (described below).

Create a New Color Scale or Edit an Existing One – Opens the Color Scale Editor dialog (described below).

Propagate Display Settings – click to propagate the display settings of the currently selected view to other views in the same display panel.

Synchronize Scrolling – click to synchronize the horizontal and vertical scrolling. You can use this in collaboration with the Display menu’s Synchronize options.  The sorts need to match for the synchronizing to operate.

 

Quick Sort Options

 

When the Quick Sort button is pressed, there are a number of sort options to choose from. The sorts available depend on whether the project is set for surface seismic data (the default) or VSP data.

 

Surface Seismic Quick Sort Options

 

The quick sorts are set using the following keys:

 

Quick Sort

Primary Key

Secondary Key

Tertiary Key

Shot

Source Line

Source Location

 

Receiver

Receiver Line

Receiver Location

 

CMP

CMP Line

CMP Location

Offset

Offset

Offset

CMP Line

CMP Location

Field File

Channel

Field File

 

Channel

Field File

Channel

 

Inline

CMP Line

CMP Location

 

Crossline

CMP Location

CMP Line

 

 

VSP data can be sorted into Source and Downhole gathers.

 

VSP Sort Options

 

The VSP quick sorts use the following keys:

 

Quick Sort

Primary Key

Secondary Key

Tertiary Key

Surface Gather

Source Line

Source Location

VSP Depth

Downhole Gather

Receiver Line

Receiver Location

VSP Depth

 

Capture an Image Tool

 

The Capture an image tool button allows you to create an image file of your seismic data display camera.  When you click on the button the Setup Image dialog box appears.

 

Setup Image Dialog Box

 

Specify a name for the image file and browse for the destination. Then specify the format (BMP, JPEG, TIFF, PNG) from the Image format drop-down list. Set the image quality on the Low-High sliding continuum, and determine whether or not to use the Colorbar. Clicking OK captures the image and stores it in the project image folder.

 

Select Color Scale Tool

 

The Select color scale tool button allows you to select from a variety of color scales to apply to your datapalette.  When you click on this button the Color Scale Viewer dialog box opens from which you can select your preferred color scale.

 

 

Color Scale Viewer Dialog Box

Create Color Scale Tool

 

The Create color scale tool button allows you to design your own color scale to apply to your data color_wheel. When you click on this button the ColorScaleEditor dialog box opens from which you can design your own color scale.

 

 

Color Scale Editor Dialog Box

 

Click on the color wheel to begin and adjust by using up and down arrows, or numerical data entry in the primary color boxes and the color feature boxes. Save your scales and apply using the Save and Apply button, or use the Select Color Scale Tool from which you can select your preferred color scale.

 

 

Opening and Saving the Seismic Display

 

When you have created a Seismic Display containing one or more display views, you can save the view into an Xml file stored within your project for future use. For example, you may have configured your display with different sorts, data ranges, display options, etc.  From the Display menu, select Save Display as to save the current configuration with the project files.  

 

 

The Save and Open Display Options

 

To open a previously saved display configuration, select Open Display; this gives you access to a file selector pointing to the Displays directory of your current project.   Once a display is open, you can continue to make changes to the display configuration; if you select Save Display these changes will be updated in the display file for future use. 

 

The command “Close Display” will close the currently selected Seismic Display tab.
Displaying Seismic Headers Spreadsheets

 

You may display the trace headers by first right clicking on a seismic data item on the flowchart, then second by selecting the View trace header values from the context menu.

 

Context menu for Seismic File

 

Spreadsheet Display of Seismic Trace Headers

In the seismic trace header display, the headers are displayed in gather order and split by gathers. The Record selection (see directional arrows at the bottom of the display) allows you to move through the gathers or jump to a specific gather by number.

 


 

Attribute Maps

 

Attribute maps map be generated from seismic files to show the variation of certain properties of the data in a map view. Amplitude and frequency attributes are commonly used to quality control data. The Amplitude Analysis and Frequency Analysis processing steps are commonly used to generate these attribute and save them in the seismic trace headers.  Attributes can be displayed in a Seismic Display by selecting “Open Attribute Map File” from the Display menu:

 

 

The Display Menu

Velocity Analysis Menu

 

The Analysis menu contains for the seismic analysis tools in SPW. The Velocity Analysis tool and the Multi-Channel Surface Wave (MASW) utility are available in the current version.

 

 

 

 

Analysis Menu

 

 

Velocity Analysis Builder

 

The velocity analysis wizard will build the flows and display panel necessary for creating the RMS velocity fields used to perform normal moveout (NMO) correction. The input is a file of CMP gathered seismic data and the output, after the velocity analysis has been completed, is a file of the NMO corrected data, together with the RMS velocities.  The wizard builds and initiates three flows: a constant velocity stack flow, a velocity semblance flow and a flow to compute the CMP gathers.   

The wizard opens with the following multi-tab dialog:

Velocity Analysis Builder (Wizard)

 

Select an input CMP sorted SEG Y file, which is used as the input to all three analysis flows.  Also select the flows you want to run, which would usually be “Constant Velocity Stacks”, “Velocity Semblance” and “CMP gathers”.  The “Velocity picks” can also be saved to enable the NMO flow to be run separately at a later time, perhaps after some editing of the picks has been made.

Constant Velocity Stacks flow

 

Select the Constant velocity stacks checkbox in the dialog and set the following parameters:

Constant Velocity Stacks flow parameters

 

Velocity range:  select a range of velocities and an increment large enough to encompass expected range in the survey area.

Processing and Mute Control: prior to displaying the data, you can add a filter and AGC options along with mutes to help in identifying events for picking.

Line and Location Range: select the inline and crossline ranges and the increments of the data set that you wish to analyze.  Each stack displayed will require picking so you may want to choose a coarse data selection to begin with.

Trace Amplitude Definition: select from relative, true or RMS amplitude scaling.

Stack normalization: enter the scaling exponent. Traces will be scaled by the fold^Exp.

Interpolation Type Selection: select the interpolation type (linear or quadratic). The moveout operator will cause trace data samples to be moved in time to new locations, which will not usually be exactly at the sample interval of the data. Here the data is interpolated to be evenly sampled at the correct interval. See, for example, the description of the Apply Normal Moveout step in the Processing Steps of this manual for further details.

 

Constant velocity stack file: enter the name for SEG Y in which the constant velocity stacks will be saved.

The broadcast button  should be pressed to send the parameter values and processing options to the semblance and gather flows.

 

 

Velocity Semblance flow

 

The velocity semblance flow shares many of the same parameters as the constant velocity stacks flow. It is recommended that the parameters set for the Constant Velocity Stacks flow are broadcast to here.

 

Velocity Semblance flow parameters

 

The unique parameters to the semblance flow are:

Semblance length: enter the length (ms) of the semblance calculation window.

Semblance file: enter the name for SEG Y in which the semblance traces will be saved.

 

 

 

CMP Gathers flow

 

The CMP gathers flow applies to the velocity picks to the input CMP stacked data to create stacks of NMO corrected data.

 

CMP Gathers flow parameters

 

Set the following parameters:

Normal Moveout: use the parameters here for how to apply the NMO and whether mutes should be applied to the data – see the description of the Apply Normal Moveout step in the Processing Steps of this manual for further details of the mutes and the percentage and taper length parameters used by the stretch mute.

Processing: processing steps for filtering, AGC and the creation of supergathers can be added to the traces when creating stacks of NMO corrected data.

Line and location range – generally these will have been broadcast from the Constant Velocity Stacks and Velocity Semblance flows.

 

 

Execution

 

Once the selected analysis output flows (velocity stacks, semblance, CMP gathers) have been parameterized, you can now execute these flows and interactively make velocity picks.   Press Execute to build the flows and start them.  Once the flows are executed, the FlowChart window will be refreshed with tabs containing the selected flows and a display tab showing the CMP gather, semblance display and constant velocity stacks.

 

 


 

The Survey Menu

 

The Survey menu contains commands for displaying maps of the data locations, defining the 3D coordinate binning information and quality checking of the geometry information.

 

 

 

The Survey Menu

To use the map options in this menu, the survey files (SPS files) should be stored in the current project’s Survey directory.

 The SPS Database

 

SPS files are tied to the current project using the SPS Database.

 

SPS Database Definition

 

Select SPS files and add them to the correct column based on their data type. Individual formats may be defined to correctly read each SPS file (see section describing SPS Analysis).

 


 

The Image Database

 

Image files are tied to the current project using the Image Database.

 

Image Database Definition

 

Select your background image files and add them to the project. Then you can select each image and configure the coordinates for the image to be drawn on maps.

 


 

Image Database Configuration

 


 

Map Displays

 

Map displays are new in SPW 3. There are a number of different types including base maps, fold maps and attribute maps.

 

 

The Basemap

 

Previously computed basemaps can be selected and new ones generated from SPS geometry files. The geometry files must be in the Survey directory of a project  To generate one select “Generate from SPS” from the Basemaps menu:

 

Basemaps menu

 

 

 

This opens the Select Basemap Inputs from which you select the SPS input files from the SPS database and where you can select a background image and any exclusion zones. The basemap is created and saved to file – use “Select basemap image” to redisplay any previously created image files.

 

Survey 3D Basemap Dialog

 

 

Survey 3D Basemap Display

 

 


Base Map Display Control Panel

 

 

Zoom In & Zoom Out – Click on the buttons to zoom the image in or out. Also use the slider bar to change the level of zoom.  Use the Reset to Original Scale button to reset the zoom level. Clicking on this button changes the sort order of your data using current sort keys. When new sort keys are selected from the right side of the seismic display control panel, clicking on this button implements the selection.

Capture an Image – Opens the Setup Image Dialog box (this is described along with the seismic view description, above).

Select or View a Current Color Scale – Opens the Select Color Tool dialog from which you can view currently available color scales and select a different scale to view (this is described along with the seismic view description, above).

Create a New Color Scale or Edit an Existing One – Opens the Color Scale Editor dialog (this is described along with the seismic view description, above).

Customize Map Annotations – Click to open the annotation panel where you can configure the size, color and shape of the source and receiver points.

Reset to Original Scale – resets the zoom.

 

 

Measure Distance Between Points – Click the pointer in two places on the map view to measure the distance and azimuth between points.

Measure Areas – Click, drag and then release the pointer to create an rectangular area – the area within the shape will be displayed.

Redraw Map – Redraws the map.

 

 

 


Fold Maps

 

Previously computed fold maps can be selected and new ones generated from SPS geometry files. The geometry files must be in the Survey directory of a project  To generate one select “Generate from SPS” from the Fold Maps menu:

 

 

 

 

When you select the Fold->Generate fold from SPS command, for a 3D dataset, you will see the parameter dialog shown below for creating a fold map. The fold map is created and saved to file – use “Select fold image” to redisplay any previously created image files.

 

 

 

Selecting the appropriate SPS files and any background and/or exclusion zones that you wish to display will result in creating an annotated fold map as is shown below.

Survey 3D Fold Map Display

 

The display control map parameters are similar to those used for the basemap display and are described above.

Compute Fold Difference

 

Two fold maps can be used to create a difference map.  Select  “Compute fold difference” to open the Compute Fold Difference dialog from which the difference map can be computed and saved.  Previously computed difference maps can be re-displayed using Select Fold Image.

 

Compute Fold Difference

Fold Difference Dialog

The Picking Menu

 

The Picking menu contains commands for picking various auxiliary data including first breaks, horizons, velocities, or mutes.

 

 

 

The Picking Menu

The picking options should be used in conjunction with the display of seismic data. One workflow for picking first arrivals is to open the seismic display and to select the picking button , which will open the Pick Types dialog.

 

Pick Types Dialogs

 

Select “First Arrivals” and then use the File Browse… button to create a new file to store the picks in or an existing file.  By default, pick files are stored in the Auxiliary directory of your current project.   The different picking options, Mute, Events, etc., are limited to particular data sorts. For example, the First Arrivals requires source, receiver or CMP sorts:

 

The Picking’s Sort Keys Dialog

 

When an existing file is selected for storing the pick outputs, a check is made to ensure that the file already contains picks of the required type – for example you can’t mix velocity picks with first break picks.  While picking is progress a backup pick file (ending .bak) is created that will contain the previously saved picks.

 

Picking is controlled by the options in the picking panel which is shown to the right the display:

 

The Picking Panel

The Picking options include:

 

Pick Method – select from single trace, linear guided or automatic methods.

Guide Type – used for the guided method to select rubberband or Two-Point methods.

Auto-Pick Method – used for the automatic pick methods.

Pick phase – select peaks and troughs, zero crossings or no auto selection.

Window length – control the search in the picking phase.

 

Other options control the colors, sizes and shapes of the picking markers.


 

The Wells Menu

The wells menu items are used for setting up well data and a VSP survey geometry, and are used in conjunction with the VSP processing flow steps.

 

The Wells Menu

 

 

The VSP Database is used to set SPS source, receiver and relation records and for defining any SPS formats.  Use VSP Database to open the Database Viewer:

 

 

VSP Database

 

 

 

VSP Database Viewer Dialog

 

The VSP Database Viewer operates in a similar manner to the SPS Survey Menu, described above, with source, receiver and relations files needed to be defined and the formats set.

 

A Location map can be constructed from the VSP Database and previously created location maps opened (use VSP Location Map > Generate from VSP files and VSP Location Map > Select map image, respectively):

 

VSP Location Map options

 

 


 

The location and datums of your well are specified in the VSP Description.  This option opens the following dialog:

 

VSP Description Dialog

 


 

VSP Geometry Definition

 

Once set up these items can be used for creating a Location Map and when importing VSP data using the VSP processing step: VSP Geometry Definition.

 

 

 

A simple processing flow for reading VSP data from input files, merging with the VSP SPS data and outputting to a new SEG Y file is shown below.  Key header values that must be set in the field data before the merge can take place are the field file ID and the channel number which are cross referenced with the record number and the channel numbers in the SPS relations file.

 

VSP Geometry Definition processing step.


The Help Menu

 

The Help menu contains commands for displaying the current information about the installed version of SPW and the licensing and access to the Flowchart help files.

 

The Help Menu


Displaying Spreadsheets of Auxiliary Data

 

 

Each of the Auxiliary data types has a unique display and spreadsheet view which is customized for that spreadsheet’s specific data type and contents. The following pages show examples of the spreadsheet views for a number of the data types. Each spreadsheet also has controls allowing you to move between displays. For example, Velocity Functions exist in multiple locations in a 3D survey at specific CMP Line and CMP Location positions. You can move between control points using the control at the top of the spreadsheet where it shows the Line and Location.

 

To open an auxiliary dialog, you can select an appropriate Auxiliary Data step from the Flowchart steps (double click or right click on the step to open the file selection dialog).  Alternatively you can view a dialog when you select a step in the flowchart which requires auxiliary data as input. For example the receiver and source statics dialogs can be opened from the Statics processing steps, time picks can be opened from the First Arrivals Statics step, velocity function files can be opened and displayed from the Apply Normal Moveout step.  These are just some of the many examples of where auxiliary data files can be opened; the following gives examples of some of these dialogs.

 


Early Mute Functions

Mute functions are defined by time offset pairs. They are usually picked on a few gathers in the dataset and interpolated between these control points.

 

SPW Early Mute Function Spreadsheet

 


Receiver Statics

 

The receiver statics are displayed on a line by line basis. You can move through the lines in a 3D survey by selecting the lines above the spreadsheet columns using the directional arrows.

 

SPW Receiver Statics

 


 

 

Source Statics

 

The source statics are displayed on a line by line basis. You can move through the lines in a 3D survey by selecting the lines above the spreadsheet columns using the directional arrows.

SPW Source Statics


Velocity Functions

 

Velocity functions are defined by time offset pairs. They are usually picked on selected gathers throughout the dataset and interpolated between these control points.

 

SPW Velocity Function Spreadsheet


 

SPS Observers Notes

The SPS Relation Record displays Observers Notes in a tabbed worksheet. Use the File Browse to select your XPS file and the spreadsheet will open displaying the contents. If it is not correct or nothing is displayed then you should use the Analyze Format button at the bottom of the display to define how these data are read.

SPS Relation Record: Spreadsheet Tab

The SPS Analyzer allows you to specify how the data will be read and decoded from this sps file. When the format is correctly defined, be sure to Save.

 

SPS Relation Record: Record Analysis Tab


SPS Receiver Locations

 

The SPS Point Record displays Receiver Locations in a tabbed worksheet. Use the File Browse to select your RPS file and the spreadsheet will open displaying the contents. If it is not correct or nothing is displayed then you should use the Analyze Format button at the bottom of the display to define how these data are read.

SPS Receiver Record: Spreadsheet Tab

 

The SPS Analyzer allows you to specify how the data will be read and decoded from this sps file. When the format is correctly defined, be sure to Save.

 

SPS Receiver Record: Record Analysis Tab


The SPS Point Record also has a tab for map display. The Map tab allows you to specify the Plot Type. The default is Basemap, other options include elevation.

 

SPS Receiver Record: Basemap


SPS Source Locations

 

The SPS Point Record displays Source Locations in a tabbed worksheet. Use the File Browse to select your SPS file and the spreadsheet will open displaying the contents. If it is not correct or nothing is displayed then you should use the Analyze Format button at the bottom of the display to define how these data are read.

SPS Source Record: Spreadsheet Tab

 

The SPS Analyzer allows you to specify how the data will be read and decoded from this sps file. When the format is correctly defined, be sure to Save.

SPS Source Record: Record Analysis Tab

The SPS Point Record also has a tab for map display. The Map tab allows you to specify the Plot Type. The default is Basemap, other options include elevation.

 

SPS Source Record: Basemap


 

Running the Flowchart

 

Once you are satisfied with the flow you have constructed, you need to name and execute the flow to complete your processing.

 

 

Naming and Saving a Flow

 

First, you must give the flow a name and save it. To name a flow document, use the Save… or the Save As… commands in the File menu. By default the flow will be saved into the project Flows directory. You will want to assign a meaningful name to the flow document. Flows are saved in XML format so you can view them with any text editor or web browser as well as opening the graphical view in SPW.

Save Flowchart XML File

If you try to compile a job that has not been named and saved, the Save as Flowchart dialog will automatically appear and you will be prompted to give the flow chart a name. If you do not give the flow chart a valid name and save it, then you will not be able to execute it.

 


Executing a Flow inside the Flowchart

 

Running a flow is a simple matter of selecting a processing step on the flowchart and pressing the Execute button or selecting the Execute command from the Processing menu.

 

Execute Command

 

Below is a display of the console area at the bottom of the flowchart display. The console will show any errors or warnings. It also shows messages about the status of the job execution. The execution of the flow is done on a separate thread from the flowchart, seismic and map displays so you can continue working during a job execution.

 

Execution Console


Executing a Flow on a Cluster

 

A flow can be executed on a cluster.  Select the Submit to cluster command from the Processing menu.

 

 

Submit to Cluster command


 

Example 3D Processing Flows

 

This section describes the main processing flows that takes the field data from Blackfoot land seismic 3D survey (vertical receiver components) and passes it through flows that merge the location data with the field seismic, that stacks into CMPs, that applies NMO correction and finally gives you a stacked CMP data volume and time slices.  Screen grabs of the flows are given along with some description of the principal processing steps; full details of each processing step can be found later in this manual.

The naming convention of the processing flows appends 101, 102, etc., in front of the flow name so that when you display the list of flows  saved in a directory they appear in a logical order.  The flows, listed below in the File Selection Dialog when you open a flow are:

 

3D Processing Flows


 

Flow 1 - Vertical Geometry

 

This flow is used to take the vertical component field data of the Blackfoot 3D land seismic survey, to merge it with the SPS field source, receiver and relation records and to stack it into common mid-point (CMP) bins. 

 

Vertical Geometry Processing Flow

 

 


 

SEG Y Import

 

The input SEG Y file is sorted by Field File number and Channel Number, with the number and ranges shown in the screen grab of the SEG Y Import dialog below.

 

SEG Y Import Dialog

 

 

Geometry Definition

 

The geometry is imported from the Source, Receiver and Relation components of the SPS files which, by default, should have been stored in the project’s Survey directory.  Screen grabs of each of these, together with information about setting the format descriptions for each SPS data file are given in the SPS section of the Display Auxiliary Data section of this manual, above.  This processing flow step will merge the SPS data and populate the trace headers of seismic data with shot and receiver numbers.  You could run a simple flow here by saving the output from the geometry definition into a separate SEG Y file rather than passing it onto the CMP Binning flow.  This would give you a SEG Y output file, sorted by field and channel numbers, but with the shot and receiver numbers, locations, offsets, etc., added to the headers.

Geometry Definition Dialog

 

 


 

CMP Binning

 

This Geometry step is used to carry out the binning of the field data into CMP bins.  The survey extents are entered together with the desired bin sizes (here 30 by 30 metres). This is a 3D survey so the Survey Dimensions : 3D button is selected.  The grid definition would generally be set from data taken from a survey planning package.  You can obtain this information from a Fold Map or a Source Location map, using the mouse pointer readout to give you Easting and Northing data points.

CMP Binning Dialog

 

Two project update buttons are available:

 

Update from project – updates the corner points from the SPS data that has been associated with the project using the Survey > SPS Database menu.

Update project – use this to broadcast the corner points so that they can be used by to set the Easting and Northing ranges of plotting functions, such as the Attribute Map used later in this flow.

 

The co-ordinate units are set as either feet or meters in the Edit Project dialog.

 

Trace Header Math

 

Trace headers often need editing or inserting.  As an example, this flow uses the Trace Header Math (from the Editing steps) step to assign the value of 6 to the trace header : Source Comp. Remember, once the output seismic file has been created, you can right click on the file in the flow and select “View Trace Header Values” to display a spread sheet of the header values where you can verify that your trace header edit has been made.

Trace Header Math Dialog

 

This step to set the Source Component has been added because this data set is part of a 3 component survey; a Source Component of 6 defines the Vertical Component according to the SEG Y standard.

 

 


 

Amplitude Analysis

 

This Quality Analysis step is added as a means of making a quick quality control analysis of each shot. The step computes an average RMS value for each shot, computed within a 2000ms time gate over all the traces that are associated with each shot.  As each trace RMS value is computed it is stored in the trace header: User Defined 1.

 

Amplitude Analysis Dialog

 

 

The RMS values can be displayed as amplitude map which is updated as the flow progresses.  The Display category’s Real Time Source Attribute Map has its input attached to an optional output of the Amplitude Analysis step.   Options such as color scales and a file to store the attribute map in can be set from this steps popup dialog.

 

Remember to use the broadcast button in the CMP Binning dialog to set the Eastings and Northings range for the amplitude map.

 

A previously computed attribute map can be opened by selecting Open Attribute (baf) File from the Display menu. 

 

 

 

Real Time Attribute Map Dialog

 

 

Seismic File

 

Finally, the a Seismic File step (from the Seismic Data steps) is used to create a new SEG Y file which is used to store the CMP binned data.  The data are sorted in this file with CMP Line, CMP Location and Offset sorts for the Primary, Secondary and Tertiary sorts, respectively.

 

 

To run the flow, use the pointer to select the flow (or use the Select All Items button) and then press Execute.  The time for the flow to execute is determined by the processor speed, number of cores and speed of the disk access.  Flows can sometimes take longer to run the first time than on subsequent running because of how data is cached by the computer. While running, the real time amplitude map is updated with the average RMS values for each source location.

 


 

Flow 2 – Bandpass Filtering and Spherical Divergence Correction

 

This flow gives examples of two processing steps that can be applied to the trace data: bandpass filtering and spherical divergence correction.

 

 

Spherical Divergence Correction Flow

 


 

Seismic File

 

Use the Seismic File step to open the CMP gathered data created by the previous flow.

 

 

Butterworth Filtering

 

The Filtering steps contain filters that can be applied to traces or groups of traces. Here the Butterworth Filtering step is used to create a bandpass filter (low cut and high cut filter) that is applied to all traces in the dataset.

 

Butterworth Filter used as a Bandpass filter.

 

 

Spherical Divergence

 

A simple mathematical operator is applied to each trace to boost the amplitude of trace samples to correct for the spherical divergence that occurs as the seismic signal travels further from its source (see discussion of this step in the Processing Library description). This step, found in the Amplitude Adjustment steps, is parameterized as:

 

Spherical Divergence step

 

 

 


 

Seismic File

 

Use the Seismic File step to save the filtered and divergence corrected data set to a new seismic file. 

 

 

 


 

 

 

 

Flow 3 – Normal Moveout Correction and Vertical Stacking

 

This flow combines together a normal moveout correction with a simple CMP stack to produce a file of inline and crossline stacked traces – i.e. one stacked trace per CMP location.  Additional steps to apply an Automatic Gain Control (AGC), an early mute and to kill traces are applied.

 

 

Normal Moveout Correction and Vertical Stacking Flow

 

 

Seismic File

Use the Seismic File step to open the filtered and spherical divergence corrected data created by the previous flow.

 

Apply Normal Moveout

The normal moveout correction step is located within the Velocities group of processing steps and is explained in more detail in the Processing Library description.  In this flow it takes its input from the CMP stacked and filtered seismic file, together with a velocity field from a data file created using the Velocity wizard described further back in this manual.

Apply Normal Moveout processing step

 

The velocity field was created for a number of the CMP locations; it is interpolated for missing CMPs.  By default, the field needs only one set of velocity picks from a single CMP, but in practice picks would be made at regular intervals across the CMP survey area.

 

The velocity fields are interpolated using Delaunay triangulation for a 3D survey or linear interpolation for a 2D survey.

 

 

 

 

Automatic Gain Control

 

An Automatic Gain Control step (see Amplitude Adjustment steps) has been applied to boost lower amplitude arrivals prior to making the brute stack in the CMP stack below.  Such a step would not be applied if any amplitude analysis was expected to be made; instead a step such as surface consistent amplitude balancing would be used.

 

Automatic Gain Control Dialog

 

 

Apply Early Mute

The early mute step (from the Mute group of processing steps) is used to remove any noise or NMO artifacts present in the data before the useful signal. The mutes are interpolated so picks can be made at regular intervals across the survey. Mutes are read in from an early mute picked file.

 

Early Mute Dialog

 

Kill Traces

Because there is some ground roll evident in the near offset traces, a simple kill trace mute is applied to any trace with an offset of between +/- 350 feet.

Kill Trace Dialog

 

CMP Stack

Once the CMP data has been NMO corrected, it can be stacked using the CMP Stack step (see the Stacking group of processing steps).  We could stack into various offsets (e.g. near, mid and far) but in this step a single stack is made over the full offset range. 

 

CMP Stack Dialog

 

 

Seismic File

 

Use the Seismic File step to save the stacked traces to a new seismic file.  The seismic file will contain one trace per CMP bin, so will be considerably smaller than the input data.  The file can be displayed by sorting on CMP Line or CMP Location.

 

 

 

Flow 4 – Create Time Slice

 

The Create Time Slice flow is used to make a special seismic file that contains several time slices cut through the stacked seismic file created in the previous flow.  The output file can then be displayed using the seismic viewer showing amplitude maps at regular spacing down through the stacked traces.

 

 

Create Time Slice Flow

 

 

 

 

Seismic File

 

Use the Seismic File step to open the stacked file created in the previous step.

 

 

Time Slices

 

The Time Slices step is located in the Display group of Processing Steps and contains options for setting how many and the location of slices that will be extracted from the stacked seismic file.

 

 

Time Slice Dialog

 

 

Seismic File

Use the seismic file step to store the output from the Time Slice step.  The time slice seismic file can be displayed in a Seismic Display, such as below:

 

 

 

Time Slice at 1600ms

As before, to run the flow, use the pointer to select the flow (or use the Select All Items button) and then press Execute. 


Instantaneous Field QC Capabilities and Procedures

 

A focus of the development of this version of SPW has been to simplify and automate field quality control. Multiple new map displays have been implemented to enable rapid visualization of your survey. Real time input of data direct from seismic recorders has been incorporated and simplified. Real time displays of seismic data, attribute maps and survey information are some of the new capabilities.

 

 

 

Real Time Processing

 

Real time processing starts with the input from the seismic recorder. SPW currently supports ARAM SEG Y format, Sercel SEG D format, Hydroscience SEG D format,  Standard SEG D format, and SEG 2 format. Other formats and recording instrument specifications will be added as needed in the future. The implementations of these formats read in all of the extended headers and if the geometry information is present in the headers, it is always input.

 

 

Real Time Seismic Input Dialog

 


 

A Simple Real Time Processing Flowchart


Real Time Seismic Displays

 

Real Time Seismic Display Dialog

 


Real Time Map Displays

 

Real Time Attribute Map Display Dialog

 


FTP Connection

 

***Note – FTP capability is temporarily disabled (October 2014) due to low level library changes.

 

Open the FTP Client

 

 

FTP Client Window

 

Using the SPW ftp client, either complete directories or single files may be sent to an ftp server. Simply open a connection to the ftp server and then select the directory or the files to transfer.

 

Sending Reports via FTP in Real Time

Several reports on record and trace kills may be sent automatically to an ftp server during the execution of a flow. This feature allows experienced personnel in the office to assist in evaluating noisy or problem data by being able to review the same information available to the field personnel. To enable this option, the ftp connection must be initiated using the ftp client from the Flowchart menu. After the connection is established then selecting the Sent file via ftp option will automatically send the report file after each record is processed.

 

Signal to Noise for Killing Records

Send Trace Analysis Report via FTP

 

Sending Image Files via FTP in Real Time


 

Troubleshooting

No License Key Available

 

If you start the Flowchart without a valid licence key available, you may get the following popup error message:

 

Check that the license key is correctly inserted into a USB port on the computer and there are sufficient days left in the license (use the Help > About dialog for this).

Killing the Flowchart Process

 

Occasionally, it is necessary to close the Flowchart while a process is executing, for example if you have started a flow by mistake that is going to take a long time to execute.  Usually, the flowchart process will be killed when the flowchart is closed, but sometimes this doesn’t happen.  In this case you can use the Windows Task Manager to “End Process” the flowchart.exe process:

 

Windows Task Manager showing the flowchart.exe processes highlighted.

If a flowchart process is already running, you will be prevented from opening a new Flowchart until the previous flowchart process has ended.

Details of how to obtain support from Parallel Geocience are given at the start of this user manual.


 

The Processing Library: 

 

Overview

 

The library of processing steps is separated into categories. The categories are as follows: