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...

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:...

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...

Immediately offshore of the Mississippi Delta the geological setting conspires with numerous production installations to produce a unique set of problems that a seismic survey must overcome if it is...

Seismic anisotropy refers to seismic waves traveling with different velocity at different propagation angle, usually in consolidated, shale-prone areas such as in Gulf of Mexico and West Africa....

Despite the development of excellent techniques for predicting multiples such as convolution based or wavefield extrapolation based approaches, subtracting multiples in the data using the predicted...

Salt model building is a key process for successful subsalt imaging. In complex areas, Reverse Time Migration (RTM) provides better images than One-way Wave Equation Migration (OWEM) or Kirchhoff...

Wavefield extrapolation (WFE) multiple prediction typically operates in common shot domain, and is very effective to predict complex multiples such as diffracted multiples; however, it is a...