Schlumberger Omni 2018


OMNI 3D 2018 Update History

This document lists software changes made since release 2017.000.

Revision History (newest patch at top of list):

Version 2018.000 – September 28, 2018

Apply select operations to multiple surveys

1.     Survey-appropriate Default files (d02 thru d05) can now be applied to selected surveys at the same time. The new “Apply Default files to Selected Surveys” feature is made available by right clicking on a survey group folder, or by right clicking after multiple surveys have been selected. Multiple Default files can be applied at the same time. Survey-appropriate Default file types include shots (.d02), receivers (.d03), script (.d04) and survey (.d05). Note that survey Default files include shots and receivers Default files. Tip: Multiple surveys can be selected by holding down the SHIFT key and selecting a survey with the left mouse button. Selecting a group folder automatically selects all surveys contained in the group folder.

2.     The visibility of targeted survey child nodes can now be modified for selected surveys at the same time. The new “Modify Visibility of Selected Surveys” feature is made available by right clicking on a survey group folder, or by right clicking after multiple surveys have been selected. Shots, receivers, scripts, detours, obstacles, surface boundaries, and fold boundaries of the selected surveys can be made all visible, all invisible, or all toggled.

3.     Attribute math can now be applied to stations (shots and receivers) of selected surveys at the same time. The new “Apply Attribute Math to Selected Surveys” feature is made available by right clicking on a survey group folder, or by right clicking after multiple surveys have been selected. The equation will reference the first set of stations. When editing the equation, it is important to only make use of attributes that exist in all stations of the selected surveys.

Color scales

4.     Color scale owner information is now interactively display in the information bar (located at the bottom edge of the application) when hovering over a color scale in the Edit view. The owner information hint fully describes a color scale’s parental object hierarchy and title, e.g., “Surveys (Land or OBC) – SurveyName.osd – Shots – Elevation”. Previously it could be difficult to identify color scale owning objects in Multiple Display Mode (when multiple color scales are displayed). Note: Color scales are displayed in the order that they appear in the project tree from top to bottom.

5.     The maximum number of color scales that can be displayed in the Edit view (for Multiple Display Mode) has been increased from 9 to 16.

6.     The Normalize Color Scales operation has been added. This operation creates a normalized color scale from a group of user-selected color scales, and then overwrites each color scale in the selected group with the normalized color scale. The normalized color scale represents an combination of the group of color scales that permits all values to be visualized. For example, the minimum value is set to the smallest minimum value from the group of color scales. Similarly, the maximum value is set to the largest maximum value.

Bin contribution wizard

7.     New functionality of the bin contribution wizard to QC traces generated by the depth and illumination analyses (Target Model Stack Fold, Target Model Migrated Fold, 3D Ray Model, 3D Grid Model).

8.     In the bin contribution wizard, a new feature has been added to create a script consisting of only the traces that contribute to selected bins. Based on an existing script and analysis, the “Create Script from Contributing” button generates a new script where each shot event consists of one trace. It is recommended to limit the number selected bins for high fold surveys.

Create multiple copies

9.     Added the capability to make multiple copies of a survey object. The maximum number of copies that can be made is 1000. The Make Multiple Copies operation is accessible by right clicking on a survey object.

10.  During a survey copy operation, it was previously required to select whether analyses should be copied. This required input has been eliminated and analyses are now copied over to the new survey.

11.  The Make Copy operation now uses a unique name (of the form objname-00n for an object with the name objname) as the default name for the copied object. Previously the default value was Copy of objname. The objects affected are 4D files (O4D), annotation layer file (OAL), contour model file (OCM), array response file (OAR), status file (OQC), streamer file (OST), survey file (OSD), elevation file (OEV), analysis file (OTM), velocity model file (OVM), EWE analysis file (OW2).

Production time estimator for land surveys

12.  A versatile method for estimating production times for land surveys has been added. The estimation method considers source-unit fleet movements, constant or variable source cycle times, constant or variable source-unit movement times, kinematics modeling of source unit movements, operational efficiencies (including efficiency factor, downtime allowance, and working hours per day), handling of unexpected downtime or breaks (for end-of-day QCs), early receiver deployment and maximum events per day. Production time results are written to source and receiver station attributes and include source firing day, receiver first and last days used, and the total number of days a receiver is used/deployed. Using existing attribute features, one can view (color by attribute), chart (attribute histogram), manipulate (attribute math), and output (create line summary) the results. The method is accessible by right clicking on a script, hovering over Production timing and clicking on Generate station attributes.

Summary reports

13.  Two items have been added in station line summary reporting: “List Column: Length of Live Stations on Line Center” and “Value: Total Live Line Center Length Overall”. The first reports the length of live/included stations along the line center, that is, the included line length projected in the inline direction. This is reported in the table as “IncLCLen”, short for included line center length. The second simply sums up included line center lengths reported in the first. The main use case for this is to determine live source line lengths for flip-flop (OBN) or sinusoidal (vibrator) scenarios.

14.  A few items in the station line summary reporting have been renamed for clarity, now including “Line Center” terminology where appropriate.

SPS, P190, P111 importers

15.  Separate surveys can now be created during bulk loads of SPS files. Previously SPS files could only be loaded into one survey at a time. The feature is made available through the SPS Read Wizard when it is started from the Surveys (Land or OBC) folder, that is, by right clicking on the Surveys (Land or OBC) folder and selecting Add Existing Survey From Files -> SPS Format. Select the “Create separate surveys” check box on the Script – Read SPS files page to enable. When enabled, separate surveys are created with names matching that of the SPS files. Complete surveys with shots, receivers, and script are created when matching SPS filenames are provided, e.g., MySurvey.{sps,rps,xps}. Partial surveys are created when it is not possible to create a complete survey.

16.  Data streamer P190 and P111 load procedures have been significantly improved:

a.     The progress bar now shows three possible load phases, (1) file read, (2) setting or autocalculating the bin grid, and (3) event boundary calculations for display (under some circumstances).

b.     The total load time is now written to the data streamer Update Log, which is accessible via the data streamer Style menu item.

c.     It is now possible to use the existing (or a user supplied) bin grid during a load, rather than always autocalculating the bin grid which can be slow.

d.     Significant speed ups have been achieved. The default load operation (file load plus bin grid autocalculation) is 1.7X faster. If a bin grid is supplied by the user, then the load operation is 4.2X faster.

e.     A new feature has been added to interpolate missing receiver groups during loads. Streamer receiver groups in P190 and P111 files are frequently decimated for navigation plans, preplots, etc. Interpolation occurs in x, y, and z from first to last receiver group along each streamer. At a minimum, first and last receiver groups must be present in the decimated input file. Interpolation works best with well-spaced nodes (relatively evenly-spaced receiver group numbers), however the algorithm can handle irregularly-spaced nodes as well. A parameter is provided to trade-off between interpolation smoothness and stability.

f.      Unique data streamer names of the form name-00X are now generated when creating a new data streamer via file load. Previously the load would fail due to duplicate naming.

P190 exporter

17.  A new feature has been added to decimate streamer receiver groups during P190 export. This is useful for generating navigation plans, preplots, reducing file sizes, etc. First and last receiver groups along a streamer are always kept. Two decimation methods are available:

a.     Keep N receivers along a streamer – This method distributes a fixed number of nodes as evenly as possible along a streamer, which is good for future interpolation.

b.     Keep every nth receiver along a streamer – This method offers a fixed decimation sampling interval (spacing).

18.  Unique filenames are now generated on data streamer file export.

4K displays and drawing

19.  The display of right-click popup menus has been improved. For some high-DPI display settings and 4K monitors, popup menu items were not displayed properly with overlapping obscured menu items. This has been fixed. In addition, popup menu items (with and without icons) now have the same height, and the item text begins at the same location.

20.  Draw quality issues have been fixed. Some displayable objects (stations, streamer lines, bins, etc.) exhibited reduced draw quality despite a project being label with Q: 100%. This was caused by incorrect Q settings when creating a new project. This has been fixed, and code has been added to detect the issue in existing projects and correct it.

Performance and capacity

21.  Ability to compute large datasets more efficiently with improved 5D Interpolation, DMO, AVO, and PSTMK analysis algorithms.

22.  The maximum memory cache size of sorted and block files can now be set much larger if memory is available. Maximum memory cache size affects performance of analysis computations, status files and grids. Its initial default value is now 2 GB (or 500 MB if total physical memory < 2GB), which has been selected based on performance testing. Its upper limit is set equal to the total physical memory.

23.  The multiple file open dialog now handles a maximum of 10000 files (at maximum path length of 260 characters) or a total of 2.6 million characters. Previously only 125 files at maximum path length could be opened. The multiple file open dialog is used throughout the application to load and import numerous different file types including SPS, Firefly, P190, P111, SEG P1, XYZ, RTF, image files (TIF, BMP, JPG, GIF, PCX, TGA), grid data (OGD), elevation grid (OEV), ray model (RMD), target model (OTM), event files (OEF), ADS-TA and -TE files, attribute files, and analysis files (ODF)

Bug fixes

24.  The script “Trim by Offset/Azimuth” operation has been fixed. Previously undefined behaviour was possible when entire shot events were trimmed.

25.  The script “Make Copy of …” operation has been speed up significantly. Previously for large scripts, this operation could effectively hang the application.

26.  Some operations such as script “Trim by Offset/Azimuth”, “Trim to Included Stations”, and “Make Copy of …” could render the application unresponsive for extended periods of time. This has been fixed.

27.  Fix a major issue in 4D Files. Fix incorrect computation of the following trace closeness functions: Receiver Location, Shot Location, Shot and Receiver Location.

28.  Fix progress bar issue where title and percentage could be set incorrectly.

29.  Fix hang when saving multiple surveys at the same time to SPS files. This error typically manifests with an error message regarding SPS error files, which when dismissed would hang the application.

30.  Several application freezes have been fixed when displaying some analyses bin statistic histograms in the Chart tab. The issues would typically manifest with the indicator bar along the bottom of the application freezing partway through a summation operation, and was triggered by analyses containing no traces (empty) or by setting the histogram bar width to zero. Analysis affected include 4D file planes, DMO fold, force density, Fresnel zone, and 2D crooked line.

31.  Fix Options dialog (available in the Setting menu) endless data validation loop and Apply button activation. Previously it was possible to enter an endless data validation loop when entering invalid values. Typically, a message of the form “Enter an integer between min and max.” would be endlessly displayed. In addition, the Apply button failed to activate when some data values were modified. These issues have been fixed.

32.  Filename specifications now replace the character ‘.’ with ‘x’ when possible. Previously everything to the right of the first ‘.’ was discarded causing some confusion regarding naming conventions.

33.  A bug was fixed in the 3D ray tracer for variable velocity calculations.

34.  All error files are now created in the projectname-files subdirectory. Previously they were created in various locations causing confusion. Filenames have also been modified to the format errorfile-00X.txt to retain existing error files and account for multiple processes running at the same time. Error files are temporary files created during some processes. If no error occurs, the file is removed after process completion. If an error occurs, the file is not removed.

35.  Several Workshop analyses would fail to complete for substantial amounts of data (5D Interp, AVO, DMO Fold, DMO Impulse, Pattern, PSTM Impulse, Velocity). The issue manifested with the message “Unable to complete analysis” once the analysis reached the end of its computation phase. This has been fixed.

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