G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 1/28 (2006.01) G01V 1/00 (2006.01) G01V 1/36 (2006.01)
Patent
CA 2185232
The method consists in building a common midpoint gather of seismic traces of which the CMP point is said given point, subjecting the traces of this gather to dynamic and/or static corrections, and characterized in that the gather associated with the given point (A) is built by recording four CMP sub-gathers associated with said given point along four angular directions (1 to 4) passing through said given point, and dynamic and/or static corrections are applied to each of the four CMP sub-gathers in order to determine, for each sub-gather, a value of the curvature and/or the velocity optimizing the energy of the trace stack of the corrected sub-gather concerned, the four values thus obtained representing the components of the stacking velocity field desired for each of the reflector elements corresponding to the given point, and characterized by a vertical propagation time t0 with reflection for zero offset. Application in particular to the exploration of a medium with a complex tectonics.
Elf Aquitaine Production
Swabey Ogilvy Renault
LandOfFree
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