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Abstract

Summary

The presence of shallow gas has long been recognized as a significant problem in imaging seismic data. The imaging is affected by the loss of signal strength and bandwidth, due to the attenuation happened during the propagation of seismic waves through viscoacoustic media. The problem is also becoming increasingly recognized as an issue in Offshore Brazil as more and more exploration and development attention was drawn there. The viscoacoustic attenuation is characterized by the quality factor Q. In this paper we describe how we successfully applied Q tomography and Q-PSDM technology to correct the amplitude loss and imaging distortion due to shallow absorption on data from Campos Basin, offshore Brazil. The result shows improved structure imaging and potentially accurate AVO/DHI analysis underneath shallow gas.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201801315
2018-06-11
2024-04-25

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References

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Application of Q PSDM in a Shallow Gas Affected Complex Area, Brazil - A Case History
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201801315
/content/papers/10.3997/2214-4609.201801315
/content/papers/10.3997/2214-4609.201801315
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