Method of 3-D seismic imaging for structures with approximate ci

Details Method of 3-D seismic imaging for structures with approximate ci Method of 3-D seismic imaging for structures with approximate ci

1988-05-27

1989-02-07

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 56, 367 58, 364421, G01V 136, G01V 138

Patent

active

048036684

ABSTRACT:
A 3-D radial seismic survey method is described suitable for accurately defining by migration processing an area having a dome-like subsurface structure. Radial survey lines are plotted with polar symmetry with respect to a center position at the center of the dome, such lines traversing the steep dip in all directions at approximate right angles. Hence, the developed data is efficiently acquired data useful for defining the structure. Bisecting survey lines may be provided as the original lines diverge to satisfy sampling requirements for migration. Data is acquired and sorted into bins that are annulus sectors and which are maintained sufficiently uniform in size to be within a maximum-to-minimum ratio of 2-to-1. Seismic source and receiver lines may be coincident or angularly offset.

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