Marine walkaway vertical seismic profiling
First Claim
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1. A method of marine vertical seismic profiling, comprising the steps of:
- (a) locating a marine seismic cable having plural hydrophones in a substantially vertical position in a body of water;
(b) towing a seismic source behind a vessel along a seismic line of profile past the seismic cable;
(c) activating the seismic source at periodic intervals corresponding to shotpoint intervals to emit seismic waves into subsurface formations beneath the body of water;
(d) sensing the response of the subsurface formations to the emitted seismic waves with the plural hydrophones; and
(e) recording the sensed response of the hydrophones as seismic data.
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Abstract
Walkaway vertical seismic profiling is conducted in a body of water. A marine seismic cable is positioned substantially vertically in a body of water. The cable has a number of hydrophones spaced along its length. A seismic source is moved along a line of traverse past the seismic cable and is periodically activated to emit acoustic waves. The response of the hydrophones to reflection of the acoustic waves from subsurface formations is then recorded for processing and analysis.
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11 Claims
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1. A method of marine vertical seismic profiling, comprising the steps of:
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(a) locating a marine seismic cable having plural hydrophones in a substantially vertical position in a body of water; (b) towing a seismic source behind a vessel along a seismic line of profile past the seismic cable; (c) activating the seismic source at periodic intervals corresponding to shotpoint intervals to emit seismic waves into subsurface formations beneath the body of water; (d) sensing the response of the subsurface formations to the emitted seismic waves with the plural hydrophones; and (e) recording the sensed response of the hydrophones as seismic data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification