Technical Library

We present a case study of an anisotropic prestack depth migration (APSDM) project which used high-resolution, shallow tomography and anisotropic model building for a large depth migration project in...

The workflow for the practical application of the automated focusing analysis in time domain is demonstrated by deriving the TTI anisotropy parameters, epsilon and delta, from the previous VTI work...

Keeping up with the latest wide-azimuth processing methods will be a popular topic at the SEG this year. TGS-NOPEC Geophysical Co. (TGS) plans to participate by showcasing results using data from a...

Time domain and depth domain focusing operators are introduced to estimate anisotropic parameters. The fully automated time domain focusing operator to derive anisotropy model for depth migration...

Accurate salt interpretation involves an integration of geology and geophysics. In the practice of salt interpretation and model building in depth imaging, we see two problems that could happen:...

Based on a previous 2D seismic survey in offshore Sierra Leone and Liberia revealing the exploration potential of the margin, a 3D long offset survey in deep water Sierra Leone was acquired in 2008....

The northern Siberia occupies a wide area with several sedimentary basins with high hydrocarbon potential. To the north from it there is the Laptev Sea rift basin which is believed to be one of the...

Madagascar is situated in the South West of the Indian Ocean at a distance of about 400 km off the East coast of Africa (figure 1). It is the third largest island in the world and covers an area of...

"We have just completed one of the most demanding seismic acquisition programmes we have ever undertaken˝, says Jørn Christiansen, principal advisor to TGS.

It is well understood that accurate salt interpretation is critical to subsalt imaging. When reflections from the saltsediment boundaries are not discernible, it takes many iterations to test various...