NORSAR Software Suite 2026: From Target Illumination to Monitoring Design

A survey can have regular surface coverage and still leave a reservoir target poorly illuminated. NORSAR Software Suite is useful to evaluate when the decision depends on how the velocity model, overburden and source-receiver geometry combine at depth. This research-based technical assessment uses official sources checked on November 8, 2026 UTC; we did not independently install or test the software.

The supplier is NORSAR Innovation AS, whose company page identifies it as a wholly owned subsidiary of the research foundation NORSAR. The latest entry verified in the public release notes is NORSAR Software Suite 2026, version 2026.0.0 dated April 28, 2026. The accompanying announcement is dated April 27, and the parent foundation’s notice April 30; those are publication dates around the release, not evidence of three different builds.

Choose the workflow before choosing the suite

NORSAR-3D, SeisRoX and MDesign answer related but different questions. The NORSAR-3D product documentation describes target illumination, ray paths, travel-time maps and synthetic prestack data. SeisRoX models the reservoir-scale migrated seismic response, while MDesign evaluates sensor-network detectability, location uncertainty and focusing. Treating those as one undifferentiated “seismic analysis” application obscures the inputs and assumptions each study needs.

For an illumination study, prepare depth horizons, the relevant elastic-property model and a proposed shot/receiver geometry, then define the target and angle or offset range of interest. NORSAR-3D documents hit maps, travel-time and reflection-angle maps, required migration aperture and interactive ray displays. A hit map counts modeled rays contributing to parts of a target; it should not be read as an unconditional prediction of the quality of recorded seismic data. Changing the geological model or acquisition geometry changes the basis of that conclusion.

The product page describes an Open Ray Model that can work with preliminary or incomplete depth models, P- and S-wave wavefront construction, and an anisotropy option for TTI layered models. The ability to run a preliminary model is useful early in design, but it does not remove the need to vary uncertain horizons, velocities and anisotropy. A proposed study should show which acquisition choices remain useful across plausible model cases rather than presenting one favorable illumination map as the final design.

Ray modeling and a simulated migrated image have different boundaries

NORSAR’s Kirchhoff modeling explanation explicitly identifies the standard ray method as a high-frequency approximation, with amplitude-reliability limitations where elastic parameters or interfaces change rapidly. Its Kirchhoff workflow adds synthetic prestack modeling including diffractions and a target-migration workflow. Ask which part of the wavefield the proposed configuration includes and which method is being used before comparing amplitudes or migration results. The vendor’s runtime comparisons are not independent benchmarks and are not used here to rank performance.

SeisRoX follows a different route to a simulated PSDM image. Its SimPLI description combines illumination vectors and a selected wavelet into filters applied to reflectivity, avoiding the conventional sequence of generating and processing a full synthetic dataset for that workflow. The documented multi-domain model links geological properties to elastic and reflectivity domains, with entry possible at different stages depending on available data. This is a modeled image response, not a substitute label for a field-data processing job.

The product page separates SeisRoX Basic’s local-target and analytic workflows from Pro’s full-field workflow with space-varying point-spread functions and rock-physics transformations. For a reservoir-sensitivity study, specify the domain entered, transformations, wavelet and background/survey assumptions. Our RokDoc assessment provides context for the neighboring rock-physics decision; it does not establish that the same modules or transformations are included in a NORSAR license.

The 2026 monitoring changes are specific to each product

The 2026 release notes add single-component geophone directivity to MDesign detectability and location-uncertainty workflows, and DAS support to its detectability workflow. The MDesign documentation shows why the distinction matters: outputs depend on sensor noise, attenuation, required triggered sensors, event magnitude and picking or ray-angle errors. The resulting detectability volumes and uncertainty components are conditional model outputs, not measured detection guarantees or a regulatory acceptance certificate.

The new PasMon product addresses operational passive monitoring with continuous sensor streams, precomputed travel-time tables and stacking-based event detection/location. NORSAR describes its connections to NORSAR-3D, MDesign and SeisRoX, but the PasMon page explicitly labels DAS support as under development. MDesign’s released DAS detectability capability therefore should not be generalized to operational DAS support in PasMon. A buyer needing both must confirm the current product-specific implementation and entitlement.

Other 2026 changes include Basic and Advanced General Model Builder variants, with the Advanced variant organizing interfaces, horizons and blocks hierarchically. The same notes list fixes affecting 2D-to-2.5D conversion with non-constant properties, topographic illumination/CMP workflows, coordinate transformations and unit conversion. For an existing project, preserve its earlier results and recheck the affected workflow under the selected release; the notes do not imply that every older result was wrong.

Exchange the model without losing its meaning

The official connector page lists survey-design connections including MESA, SurvOPT, TesserACT and OMNI, plus Petrel and Nucleus+ integration. These can be complementary parts of a project. Our OMNI 3D overview addresses the acquisition-geometry side; nominal survey design and model-based target illumination remain separate checks even where data can be exchanged.

NORSAR’s Petrel Data Link documentation specifies export of surfaces, seismic/property cubes, wells, model grids and cases into NORSAR projects, and return of cubes and surfaces to Petrel through the Ocean Framework. Confirm the exact Petrel/NSS/plugin version pairing, units, coordinate system and property mapping. The release notes mention a Data Toolkit and Python-library changes, but a full current automation API contract was not verified; a runtime version alone does not establish a supported scripting interface.

Size and license the actual modeling workload

The current technical information page lists Windows 10 22H2, Windows 11 24H2 or higher, and Red Hat Enterprise Linux 9 or higher, with a 64-bit OS required. It specifies 8 GB minimum RAM, recommends at least 4 GB per CPU core and 64 GB or more for complex models/surveys, and calls for a 3D graphics accelerator. Linux additionally requires an X server with OpenGL extension and OpenGL runtime libraries. These are vendor requirements, not sizing results for a particular survey.

The licensing FAQ documents floating FLEXlm licensing, but mixes current-suite and legacy-version troubleshooting. Obtain the current license-server/runtime requirements, module allocation, concurrent-job rules and VM/cloud or remote-use permission for the intended deployment. The academic lease is a separate offer for qualifying internal research/education, with specific conditions for commercially funded work; it is not evidence of general commercial-use rights.

Official manuals and installers require a customer login, which was not bypassed. The public support page provides helpdesk contacts and weekday hours; it does not establish the support term or response commitment in a particular order. Request the installation guide, exact build, license terms and a workload-based hardware recommendation before deployment.

When full-wave modeling belongs in the comparison

For synthetic seismic modeling and acquisition studies, Tesseral’s documented portfolio is a relevant alternative: it describes 2D/3D full-wave modeling and scalar, acoustic, elastic and anisotropic formulations across its products. Compare the required wave phenomena, dimensionality, model parameterization, target-image output and computing configuration against NORSAR’s ray/Kirchhoff and SimPLI workflows. This is a method-and-scope comparison, not evidence that one package is universally faster or more accurate, and the current Tesseral build was not verified here.

NORSAR deserves a shortlist when the team needs to explain target illumination or monitoring-network performance through an explicit subsurface model, or test reservoir-image sensitivity through the appropriate SeisRoX workflow. Prefer a full-wave alternative evaluation when the required physical effects cannot be adequately represented by the selected approximation. Confidence is strongest in the public 2026 release, product boundaries and platform requirements; exact licensed scope, integration versions, automation interfaces and project validity remain purchase-specific. Ask for a representative model-to-output demonstration that exposes the velocity, noise, geometry and method assumptions, especially if DAS is part of the monitoring plan.