INEXS® interprets complex salt geometries in basins worldwide. These simple-to-complex geometries are used in the velocity model building process for prestack depth migrations (PSDM).

INEXS® collaborates with clients and seismic data processing companies to incorporate their ideas and deliver 3D surfaces that accurately define each salt body. The improved geologic model increases clients’ confidence in properly risking their exploration and development drilling program.

We evaluate and test constraints to ensure the salt body interpretation has been adequately constrained. Salt tectonic principles, including the use of sutures, welds, supra- and sub-salt sediment dips, shale bodies, inclusions and carapaces, are considered while defining each salt body. When available we incorporate client provided horizon and fault interpretations and gravity data, and review gathers to validate our interpretation.

Salt bodies are iteratively defined via ongoing identification of salt surfaces. The methodology of salt model-building involves several surfaces, single Z or multi Z, resulting from the interpretation of several intermediate PSDM seismic volumes such as sediment floods and salt floods. Iterations of Top of Salt, Base of Salt and Overhangs are defined during the velocity model building process. Consistent QC processes in salt body-identification and interpretation prevent errors and mitigate risk in each project.

Complete or partial interpretation of both shallow and deep salt structures can be accommodated, to extend the utilization and effectiveness of in-house multi-discipline teams.

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