Technical Library

The authors describe an experiment to validate the use of a dual-sensor streamer for time-lapse acquisition.

The source rock for the hydrocarbons in the Upper Jurassic, Cretaceous, and Tertiary reservoirs in the eastern Gulf of Mexico is postulated to be Upper Jurassic Smackover lime mudstone (Mancini et...

For traveltime data, it is known that lateral heterogeneity can manifest itself as anisotropy (Grechka, 1998; Grechka and Pech, 2006), potentially distorting inversion and interpretation of derived...

In January 2010 TGS completed the reprocessing of two regional long offset 2D multi-client seismic surveys in the Faroe-Shetland Basin (FSB). This reprocessing forms part of TGS’ ongoing Atlantic...

Tomographic inversion forms the basis of all contemporary methods of updating velocity models for depth imaging. Over the past 10 years, ray-based tomography has evolved to support production of...

Many data processing and interpretation procedures are performed on time domain data. If such procedures are to be applied after a depth imaging project has been conducted, it is necessary to convert...

The anti-leakage Fourier transform (ALFT) is a regularization method using an iterative procedure for computing the spectrum of irregularly sampled data. For each iteration a discrete Fourier...

Recent developments in the field of marine towed streamer acquisition technologies have brought about new data information that needs to be assessed and compared to conventional data. Dual-sensor...

Azimuthal variation in traveltimes is increasingly being used as a tool for reservoir characterization and fracture detection. One issue in interpreting the results of azimuthal normal moveout (NMO)...

The industry is acquiring increasing numbers of wide azimuth surveys. In soft rock settings, such as the Gulf of Mexico, the objective is usually to improve illumination and imaging of obscured or...