Technical Content

We present an efficient convex optimization strategy enabling the simultaneous attenuation of random and erratic noise with interpolation in pre-stack seismic data. For a particular analysis window, frequency slice spatial data can be reorganized into a block Toeplitz matrix with Toeplitz blocks in the ...

This article focuses on an area of the Ivorian part of the Tano Basin where no drilling has yet taken place. It describes the interpretation of a new multi-client BroadSeis™ 3D seismic survey covering this unexplored area, which has provided the basis for a ...

Building on our earlier Big Data paper at OTC in May 2015, this article in JPT October 2015 continues our push to demonstrate the use of Big Data in an Oil & Gas context. Well data from the UKCS were analysed to identify "bad ...

Article describes application of TomoML to our 35,000 km2 Cornerstone survey in the North Sea. Also make reference to broadband deghosting, dip-constrained channel tomography and dual azimuth.

Amplitude versus Offset and Azimuth (AVOAz) Analysis can be separated into two separate parts; Amplitude versus Offset (AVO) analysis and Amplitude versus Azimuth (AVAz) analysis. Useful information about fractures and the anisotropy is obtained by just examining the AVAz. The AVAz can be described ...

A case study of the acquisition and background to the integrated multi-client geoscience project over the Gabon South basin.The deepwater area of the Gabon South basin is one of the last underexplored areas of the West Africa Atlantic Margin. CGG is acquiring and imaging ...

Successful development of known fields requires high-quality seismic data in order to accurately delineate the reservoir through processes such as seismic inversion and reservoir characterization studies. In the new oil price regime this has become even more important as oil companies try to keep ...

Commonly fitted by an ellipse, AVOAz is actually better approximated using limaçons. The article begins by reviewing the properties of the original limaçon, then explains how they can apply to AVOAz and finally illustrates how limaçons can help with the interpretation of anisotropy on ...

Marine seismic acquisitions record both primary and multiple wavefields. In a typical processing sequence, multiple energy is removed from the data before migration. However, there may be valuable information contained in the multiple wavefield. To discover this hidden information, reverse time migration of multiples ...