--> ABSTRACT: 3-D Imaging Beneath Water-Bottom Channels in the Gippsland Basin: A Case Study, by K. T. Jerry Young, William A. Schneider Jr., Becky G. Houston, Roy E. Clark Jr., and John R. Moore; #91019 (1996)
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Previous Hit3-DNext Hit Imaging Beneath Water-Bottom Channels in the Gippsland Basin: A Case Study

K. T. Jerry Young, William A. Schneider Jr., Becky G. Houston, Roy E. Clark Jr., and John R. Moore

Water-bottom channels in the Gippsland Basin cause nonhyperbolic moveout and time delays resulting in disrupted and distorted structural images on time sections. In Previous Hit3-DNext Hit processing, Previous HitprestackNext Hit Previous HitdepthNext Hit Previous HitmigrationNext Hit is the ultimate processing technique for resolving nonhyperbolic moveout and producing correct Previous HitdepthNext Hit images. But, the high cost and slow turnaround time of Previous Hit3-DNext Hit Previous HitprestackNext Hit Previous HitdepthNext Hit Previous HitmigrationNext Hit limits its application. An alternative Previous Hit3-DNext Hit processing approach, consisting of Previous HitprestackNext Hit Previous Hit3-DNext Hit replacement dynamics, stacking, poststack inverse Previous Hit3-DNext Hit replacement dynamics, and Previous Hit3-DNext Hit poststack Previous HitdepthNext Hit Previous HitmigrationNext Hit, was applied to a Previous Hit3-DNext Hit survey located near the shelf-slope edge of the Gippsland Basin.

Application of Previous Hit3-DNext Hit replacement dynamics reduced nonhyperbolic moveout caused by variable water Previous HitdepthNext Hit and improved the quality of stacked traces. We found that the interval velocity distribution below the sea floor is largely controlled by compaction or Previous HitdepthNext Hit below the sea floor. Poststack Previous HitdepthNext Hit Previous HitmigrationNext Hit, with a compaction-based velocity field, removed the structural distortion beneath the channels, resulting in an accurate Previous Hit3-DNext Hit Previous HitdepthTop image.

AAPG Search and Discover Article #91019©1996 AAPG Convention and Exhibition 19-22 May 1996, San Diego, California