Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1991-07-09
1992-10-06
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 38, 367 59, G01V 128
Patent
active
051538571
ABSTRACT:
A method for improving the efficiency of pre-stack depth migration includes the steps of deleting a portion of the received data to obtain a representative remaining portion. All the shots are separated into several series, such that within each series the receiver locations are repeating. One or more series of shots is selected for migrating. With each series, receivers are selected from each shot such that their locations are repeating. This allows maximum re-use of the travel time tables and resulting in the best efficiency of the depth migration. The same principal can be applied to three dimensional prestack depth migration to improve its efficiency.
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Conoco Inc.
Lobo Ian J.
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