TGS has data in over 35 countries worldwide. Explore our vast global coverage in our new interactive map.

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In addition to our extensive global geophysical and geological data libraries, we also offer advanced processing and imaging services, interpretation products, and robust data-application integration. Access the industry’s largest volume of geoscience data through TGS’ cloud-based web portal, R360.

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TGS places great emphasis on providing accurate and timely information to the market and shareholders. Our flexible, asset-light business model and ability to adjust costs rapidly continue to allow us to deliver significant shareholder value—even in a difficult market.

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It is our vision to become the leading energy information company with the best people, quality and service. Our unique culture, people and quality library will ensure that when E&P companies think geoscientific data, they think TGS.

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At TGS, we place great emphasis on providing accurate and timely information on our performance and projects to the market and shareholders. Here you can access our latest news, download articles or technical papers from our library, or learn more about our upcoming conferences and events.

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TGS’ prestack Gaussian Beam depth migration efficiently handles both isotropic and anisotropic media (VTI & TTI).

It uses travel times computed on-the-fly through dynamic ray tracing. The input velocity field may need to be smoothed to increase the robustness of the ray tracing.  The code offers user options to control the beam density and the beam width, thus the efficiency of the migration and the quality of the migrated images.

For reference, see the papers by

Tariq Alkhalifah, 1995, Gaussian beam depth migration for anisotropic media: Geophysics, 60, No. 5, pp 1474-1484.

Ross Hill, 2001,Prestack Gaussian-beam depth migration: Geophysics, 66, no. 4, 1240-1250.

Ross Hill, 1990, Gaussian beam migration: Geophysics, 55, no. 11, 1416-1428.

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