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Industry Article: Investigating the Problem of Imaging Below Shallow Gas: A Survey Design and Modelling Case Study

Investigating the Problem of Imaging Below Shallow Gas: a Survey Design and Modelling Case Study
Publication: First Break
Publication Date: 11/01/2012

The problem of shallow, highly absorptive zones negatively affecting the quality of the seismic image at target depth is widespread across the Malaysian deep water basins. Whilst developments in processing regimes have led to considerable improvements in the compensation of amplitudes below these areas of high absorption, the issue of improving the seismic image, and subsequently, confidence in exploration decisions within affected fields, remains a key challenge for operators in the Asia Pacific region.

The goal of the study was to determine whether the attenuation of seismic amplitudes below these areas can be minimized through the application of advanced seismic acquisition designs, e.g., increased azimuth, long offset acquisition.




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