This is a bugfix and maintenance release which addresses the following issues:

Survey

• Improved display of indices in survey subselection editor. Can now see all digits.

Illumination Maps (IMAP), Survey Domain Workflows

• Fixed crash when mapping into shot points or receiver points. Happened mostly with SPS type surveys.
• Fixed that some receiver point coordinates were distorted in the maps.
• Fixed that making maps in CMP domain sometimes caused a crash.

Make 2.5D model from 2D model 

• It was possible to make an illegal 2.5D model from a 2D model which caused a crash. Will now show an error message when making a 2.5D model from an incomplete 2D model.

In addition: Minor stability fixes and improvements.

NORSAR Software Suite 2019 has introduced the advanced and powerful NORSAR-2D Ray Modelling tool in a completely new user-friendly wrapping.  It is the first step towards a full integration in the NORSAR Software Suite framework. A sophisticated 2D Model Builder has been unveiled, supported on both Linux and Windows.  The 2D Model Builder is available in all version of NORSAR Software Suite. In addition, NORSAR-3D is extended with support for fiber optics (DAS) modelling and new functionality for VSP modelling.  

This bug fix release includes further improvements and bug fixes.
 

Release details

Survey

• More robust handling of using shot line selection in survey import SPS.
• Improved performance of display of large surveys and handling in workflows.
• Improved handling of undefined shot and receiver positions that caused problems in SeisRoX as well as Illumination Rays and Interactive Wavefront Tracer workflows.

Properties

• Improved handling of undefined values in property cube smoothing.
• Fixed issue with window layout in SEGY Property Import (user defined).

Illumination Rays (IRAY)

• Survey Dependent IRAY Workflow:
  • Fixed empty Rose Plot for anisotropic models.
• Survey Independent IRAY Workflow:
  • Fixed bug accepting too many contributions.
  • Fixed empty Rose Plot due to one invalid ray.
• Better error handling to avoid unwanted empty roses.

Seismogram Generator

• Introduced receiver sub-selection, except of SPS and P190 type surveys.

3D General Model Builder

• Improved smoothing and extrapolation, especially for not strictly single-valued interfaces.
• Improved clipping by polyline - clip all the way through.
• Improved adaptive triangulation algorithm to get fewer triangles in gridded surface uploaded from Objects’ list.

2D Model Builder

• Implemented coordinate conversion in horizon import/export.
• Warning if imported horizons are not on a section.
• Introduced interface splitting.

NORSAR Software Suite 2019 introduces the advanced and powerful NORSAR-2D Ray Modelling tool in a completely new user-friendly wrapping. It is the first step towards a full integration in the NORSAR Software Suite framework.

This first version unveils a sophisticated 2D Model Builder, supported on both Linux and Windows. The 2D Model Builder is available in all versions of NORSAR Software Suite.

In addition, NORSAR-3D is extended with support for fiber optics (DAS) modelling and new functionality for VSP modelling. Several improvements and bug fixes are also included.
 

Release details

2D Model Builder

• A completely new tool to build 2D ray tracing models.
• Fully integrated digitizing tool using a background image.
• Convert seamless from 2D to a 2.5D model. Use 3D interactive tracing.

Illumination Map

• New DAS VSP filter. Filter by incident angle to the DAS cable.
• Display VSP attributes along a well.

Event Attribute Extractor

• Export computed incident angle to the DAS cable. 
• Apply filter on the incident angle before exporting.
• Export relative amplitude response along DAS cable.

MESA Connector

• Associate the exported attributes with the individual shots and receivers. Allows the attributes to be used on shot and receiver level in MESA Survey design.

SeisRoX

• Added subselection of PSDM simulation results when exporting as SEG-Y cubes.
• Added option for scaling PSDM simulation results when exporting as SEG-Y cubes.
• Added option for resampling PSDM simulation results when exporting as SEG-Y cubes.

Bug fixes and improvements

• Improved re-tracing in the Wavefront tracer, IRAY and Flowerplot.
• Improved Color bar handling. The user can now click directly on the color bar to change settings.
• Fixed wrong units for the model box in the single block model builder. 
• Fixed wrong units in make analytic property grid.
• Fixed crash when clipping property inside block in the general model builder.
• Fixed that extrapolation of an interface could distort the interface grossly.  
• Fixed issues with smoothing of S-wave velocities.  
• Fixed that was not able to make a receiver sub-selection in workflows.  
• Fixed slow workflow list update if large survey.
• Fixed error in grid layer cake model if too long interface names 
• Improved interface intersection (cut) in the general model builder. 

In addition: Many minor stability fixes and improved help.

This is a bugfix and maintenance release which addresses the following issues:

Illumination Map, Simulated Migration Amplitudes

• Fixed a bug in handling of complex SPS-type surveys. Too restricted in how many receiver sub cubes were allowed for a shot.
• Fixed bad handling of tracing results with static event storage
• Fixed that export of Survey domain illumination maps frequently failed with error that no geometry defined 

Tracer workflows

• Fixed event storage policy menu not correctly available in Advanced tracing parameters.
• Fixed that retracing and reflection/arrival point plotting could not handle static event attribute storage, and non-standard event storage order
• Fixed that retracing failed without warning when attributes required for retracing were not stored in results. Added warnings.
• Retracing: Fixed a bug in “Acceptance distance” leading to unexpected results from changing the parameter

Event Attribute Extractor

• Fixed bad handling of tracing results with static event storage

Framework

• Fixed that dots in object names (for example models) caused unexpected behaviour

General Model Builder

• Fixed that interface lists in horizon- and block editing did not update correctly after a split operation

NORSAR Software Suite 2018.1 is a new main release featuring new functionality for time-depth conversion and an enhanced Kirchhoff Target Migration allowing for both isotropic and anisotropic models. In addition, several improvements and bug fixes are included.

Release details

New functionality

• Generate time-depth functions from velocities defined in time domain
• Time-Depth conversion of property cubes and seismic cubes
• Kirchhoff Target migration for dynamic ray tracing results which allows for both isotropic and anisotropic velocity sensitivities studies using Green’s functions for P-waves

Bug fixes and improvements

Framework

• Legacy NORSAR-3D tools in separate sub menu
• Fixed crash in reflectivity viewer on unexpected input
• Support for property functions in time domain in object list
• Windows version: Removed option to run NSS from installer (could be run as wrong user.)

3D-Viewer

• Fixed unit bug in Set Home View
• Different default background in time- and depth viewers

2D-Viewer

• Fixed bad axis orientation for X-Y view

Import

• Fixed Eclipse model incomplete when imported to NORSAR
• Fixed Crash using imported Eclipse model

Illumination Ray Export

• Fixed wrong attribute value exported for incident angle and reflection angle
• Fixed incident azimuth not normalized in range [0, 360] degrees

Export of NORSAR regular cubes to SEGY

• Fixed data not sorted according to project Inline/Crosslines
• Fixed inconsistent use of trace header fields to define z0
• Stability fixes

Model Building

• Fixed bug in converting a 2D model with varying properties to a 2.5D model
• Added undo for selected functionality in general model builder
• Fixed bug selecting block from the table view in property tab in general model builder
• Stability fixes on functionality for editing interfaces in general model builder
• Fixed bug in projection of interface onto another. Interface list was repeated in pull-down menus
• Added possibility to delete incomplete models

SeisRoX Target Model Editor

• Fixed crash in generating elastic properties from geological properties

Convert N3D Model to Target Model

• Fixed crash for empty interfaces

Remote Machine Setup

• New: Allow for setting common machine settings for a list of machines
• Improved check on path consistency

Workflows

• New option to set a static shot centered work box
• New buttons to collapse or expand workflow tree view
• Fixed bug in dynamic shot centered workbox for specific survey types
• Bug in plotting of dynamic workbox based on shot selection in workflow
• Minor improvements in advanced ray code editor
• Fixed bug in CPU time from tracer job

Illumination Ray Workflow

• Fixed unit conversion error in offset grid setup

Illumination Map Workflow, Simulated Migration Amplitudes Workflow

• Option for filtering out events with supercritical reflections was ignored in generation, always allowing all events, unless a topological receiver subselection was defined, in which case the value was wrongly handled
• Added option to filter on all, first or most energetic event
• Fixed frequent crashes on cancelling generation process
• Improved archiving if generated from tracer workflow results

Seismogram Generation Workflow

• Improved archiving if generated from tracer workflow results

Kirchhoff Prestack Modelling Workflow

• Allow survey subselection in Kirchhoff modelling

Kirchhoff Target Migration Workflow

• Fixed bug in recovering of failed processes

SeisRoX Workflows

• Fixed 1D models could not be selected if there was a "." In the name
• Fixed bug in recovering a failed Full-field process when running in remote execution mode
• Fixed bug in setting up local target box defined in InLine/CrossLine or UTM coordinates
• Allow multiple target models/variants for utility property cube generation
• Fixed bug in listing of time converted results

Wavefront Tracer workflows

• Improved shot selection in interactive tracer, enabling selection from the 3D viewer
• Fixed unit bug in retrace accuracy dialog
• Fixed bug in wavefront plotting which could cause crash if unexpected wavefront parameters
• Fixed bug in export of travel time cubes as SEGY. (Missing source depth)
• Fixed bug in travel time cube generation: Kept projection when defining shots from point set or sensors

MDesign Workflows

• Fixed wrong velocity used in Detectability and Location uncertainty

Ray Path Generator (legacy, Linux)

• Fixed blocking bug not handling new tracer results

In addition: Many minor stability fixes and improvements and improved help.

This is a bugfix release which addresses the following issues:

SeisRoX Local - Survey workflows

• Bug in computation of Green's Function survey from some multi-survey input geometries when the individual surveys were flat and at different depths. This could lead to empty results

NORSAR MESA Connector

• Enable NORSAR Software Suite side of MESA connector on linux

Survey Generator - Fixed survey

• Failed to generate fixed survey when the project path contained spaces 

Tracer workflow result logs

• Showed the wrong CPU time 

Common shot wavefront tracer

• Missing help on ray removal parameters

Eclipse model import

• Occasional crash in preview mode

SEGY Property Import

• Misleading information text when importing symmetry axes. Not all components listed

This is a bugfix release which addresses the following issues:

Wavefront tracer

• Handle rare cases in anisotropic models where numerical instability causes  travel time computations to collapse and output faulty travel times.

Distributed machine setup

• Added a consistency check on remote machines to enable a quick fix if remote machines point to a different version of the software than the front-end machine.

It will work for homogenous systems with standard setup.

Kirchhoff Prestack Modelling Workflow

• Improved scalability on job distribution
• More efficient cleanup in final merge task
• Fixed a bug in resource probing when recovering a failed workflow run

Note: Failed or canceled workflows, which have been run with older NSS versions, must not be recovered. Require full re-run.

Kirchhoff Target Migration Workflow

• Fixed bug in computing target bounds from Kirchhoff prestack target model if no sub-area was selected.
• Improved scalability on job distribution.
• More efficient cleanup in final merge task.

Note: Failed or canceled workflows, which have been run with older NSS versions, must not be recovered. Require full re-run.

License handling of sub-processes

• More efficient license checking to avoid license server crash on heavily parallelized workflows.

Project selection

• When entering a path in the project directory field of the main window, a project selector pops up if the path is not a valid project.

Common Shot Tracer – Travel time cube workflow

• Fixed problem with shot index in SEGY export of travel time cubes.
• Archiving: Include shot index information.

Property operations (object list)

Unit conversion error in "Extrapolate distance" field.

Time-Depth conversion of grid surfaces

Fixed handling of undefined positions.

New functionality

Areal filters

Areal filters based on logic combinations of polygons. These new filters can be applied in illumination map/SMA generation and retracing.

Framework and Viewer

• Added option to display property slices without interpolating data values
• Added option to select multiple surfaces for delete in object list

Illumination/Simulated Migration Amplitudes Maps

• A specific map is generated by combining the 'Target SMA Amplitudes' and the 'Constant Reflectivity Target SMA Amplitudes'. For this map, the effect of Survey and Overburden is removed, resulting in a sort of 'true amplitude' map, quantifying an approximation of an average reflection coefficient for the reflection angles involved. This map attribute is called 'SMA Normalized'.
• Added histogram for attribute plots

Survey generation

A new survey generator for defining surveys for different shot geometries, where the receivers are located on a regular 3D grid.

SeisRoX

Simplified way to generate multiple offset based survey sub-selections.

Bug fixes and improvements

Event attribute Extractor

• Blanks in the project path handled also on windows.
• Reflection coefficient phase was displayed in radians even if degrees was specified.
• Wrong dip values on shot take-off vector.

SEGY Property Import

• Handle sample formats 2 and 3. Previously only sample formats 1 and 5 were handled.
• Bugfix on import large SEG-Y property cubes.

GoCad TriMesh Import

• Added option to specify whether Z axis is pointing up- or downwards.

Illumination Map/Simulated Migration Amplitude workflows

• When a project is defined in other units than km, multi-map ranges listed were wrong for some attributes.
• When generating maps from a tracer workflow with multiple ray codes defined, the ray code display in the workflow was wrong
• Cleaning up unfinished illumination map and SMA workflows was incomplete if parallel, which could cause failure when re-running
• Fixed crash when setting up advanced color maps
• Advanced color maps not displayed by color legend

Simulated Migration Amplitude Workflows

• Improved default parameters for constant impedance map generation

Wavefront Tracer workflows

• Added additional advanced parameters for removal of rays. Max relative geometrical spreading
• Receiver topology sub-selection in retrace parameters were not updated when changing workflows
• If S-velocity was illegal for some shots, and one or more ray codes started with an S-segment, the tracing failed
• Linux only: Allow for using rsh when starting remote processes
• Linux only: Allow to specify external directories for event storage

Modelling Project Setup

• Wrong z-unit used at some places when the project is defined in kfeet

General Model Builder

• Only interfaces that are shown in the interface list can be selected for editing.

Framework and Viewer

• Fixed bug in reflectivity plot of SeisRoX models appearing when some positions are undefined

In addition, stability and bug fixes.

This is a bugfix release which addresses the following issues:

Illumination Map Workflows, Simulated Migration Amplitudes workflows

• Map generation failed if there were blanks/spaces in the path to the modelling project. (Windows only, blanks/spaces in project path is not supported on Linux.)

Wavefront tracer

• Fixed an issue in velocity lookups that occasionally caused shots to be reported as failed when they were not, if property values are “invalid”

Interactive wave front tracer workflow

• More efficient storing of wavefronts. (Note: Earlier versions of NORSAR Software Suite will not be able to read wavefronts stored with this version)

Distributed job execution

• Allow using RSH instead of SSH when starting distributed scheduling agents

3D Viewer

• Fixed bug in obtaining value range for 1st order and 2nd order derivative plots in models

NORSAR-3D

Image ray tracer workflow - NEW

This new workflow constructs time surfaces (time grids) corresponding to time migrated horizons from a given NORSAR3D depth model.

NORSAR-MESA Connector (Windows only) - NEW

The MESA-NORSAR connector provides direct, fast transfer of data between MESA and NORSAR.

• Surveys designed in MESA can be loaded into NORSAR.
• Illumination maps computed in NORSAR can be loaded into MESA.

SEGY property import

• Improved symmetry axis import for TTI models.
• Improvements in handling of SEGY files with incomplete geometry information.

Modelling project edit

• Improved unit handling when creating a project using a grid template.

Grid Import

• Option for skipping header lines did not count commented lines.

Object list

• Added listing of symmetry axis cubes.

Viewer

• Added display of symmetry axes in models
• Fixed bug in plotting of NORSAR-2D models with non-zero x-origin

Improved unit handling

• Support for US Survey feet.

Batch wavefront tracer workflow

• Active shot can now be selected in graphics in addition to the workflow results list.

Tracer workflows

• Enable setting retrace accuracy without having to re-do the retracing.
• Added a timeout to prevent "eternal" waiting for rays to plot.
• Added warning if there are no results for a selected shot/ray code.
• Fixed bug in setting single force source vector. Vector component was not allowed to be negative.
• Improved handling for invalid shot positions for S-sources.
• Some dense surveys originating from SPS-import were not properly read into the tracer.

Seismogram generator

• Did not properly support anisotropic S
• Require inclusion of reflection/transmission effects when single force S-source

Travel time cube export

• Incorrect shot coordinates in exported SEGY

General Model Builder

• Display interfaces with borders as default, such that internal borders are visible
• Splitting an interface in topologically disconnected parts, now also available in horizons view
• Improved handling of switching between different model building modes

Single block model builder

• Fixed bug causing an error when trying to generate a model with very small smoothing parameter (<10 m).

Event Attribute Extractor

• Some clarifications in the help about different event attributes.

Survey import

• Improved help on the azimuth-offset and OVT option

In addition stability and bug fixes

MDesign

Location Uncertainty workflow

• Plot number of triggered stations