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Abstract

Summary

In the present there is an active offshore oil & gas shelf fields development. The standard methods applied for investigation of near surface geological conditions for site survey goals are high resolution seismic (HRS) for top hole drilling hazard assessment and ultrahigh resolution seismic (UHRS) mutually used with hydrographic surveying for sub-bottom geohazard assessment. On the other hand, application of 3D seismic technology for site survey investigations requires improvements both in data processing and interpretation. This paper focuses on the generalization of experience in the geohazards assessment in offshore fields based on the 3D seismic data. Involving of modern interpretation procedures standard for prospecting and exploration: inversion, wavelet analysis, pore pressure prediction based on spectral time analysis, Poisson ratio evaluation can significantly improve the accuracy and efficiency of 3D seismic data interpretation for site survey investigation. But still remain unsolved problems related to resolution of sub-bottom part, which caused by insufficient sources frequency range and absence of near offsets.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.201413747
2015-09-06
2026-01-17

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References

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/content/papers/10.3997/2214-4609.201413747
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Approach to 3D Seismic Data Interpretation for Drilling Geohazard Assessment
Conference Proceedings 2015, 1 (2015); https://doi.org/10.3997/2214-4609.201413747
/content/papers/10.3997/2214-4609.201413747
/content/papers/10.3997/2214-4609.201413747
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