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Book Chapter

Multicomponent Seismic Technology Assessment of Fluid-gas Expulsion Geology and Gas-hydrate Systems: Gulf of Mexico

By
B. A. Hardage
B. A. Hardage
Bureau of Economic Geology, Austin, Texas, U.S.A.
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P. E. Murray
P. E. Murray
Bureau of Economic Geology, Austin, Texas, U.S.A.
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R. Remington
R. Remington
Bureau of Economic Geology, Austin, Texas, U.S.A.
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M. De Angelo
M. De Angelo
Bureau of Economic Geology, Austin, Texas, U.S.A.
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D. Sava
D. Sava
Bureau of Economic Geology, Austin, Texas, U.S.A.
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H. H. Roberts
H. H. Roberts
Louisiana State University, Baton Rouge, Louisiana, U.S.A.
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W. Shedd
W. Shedd
Minerals Management Service, New Orleans, Louisiana, U.S.A.
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J. Hunt, Jr.
J. Hunt, Jr.
Minerals Management Service, New Orleans, Louisiana, U.S.A.
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Published:
January 01, 2009

Abstract

Four-component ocean-bottom-cable (4-C OBC) seismic data acquired in deep water across the Gulf of Mexico were used to study near-sea-floor geologic characteristics of fluid-gas expulsion systems. Although these 4-C OBC data were acquired to evaluate oil and gas prospects far below the sea floor, the data have great value for studying near-sea-floor geology. The research results summarized here stress the importance of the converted-shear-wave (P-SV) mode extracted from 4-C OBC data. In deep water, the P-SV mode creates an image of near-sea-floor strata that has a spatial resolution an order of magnitude better than the resolution of compressional wave (P-P) data regardless of whether the P-P data are acquired with OBC technology or with conventional towed-cable seismic technology. This increased resolution allows the P-SV mode to define seismic sequences, seismic facies, small-throw faults, and small-scale structures that cannot be detected with P-P seismic data.

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Contents

AAPG Memoir

Natural Gas Hydrates—Energy Resource Potential and Associated Geologic Hazards

T. Collett
T. Collett
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A. Johnson
A. Johnson
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C. Knapp
C. Knapp
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R. Boswell
R. Boswell
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American Association of Petroleum Geologists
Volume
89
ISBN electronic:
9781629810270
Publication date:
January 01, 2009

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