Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2006-01-10
2006-01-10
Keith, Jack (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S073000, C702S014000
Reexamination Certificate
active
06985404
ABSTRACT:
A method for performing amplitude variation with offset (AVO) analysis of a plurality of seismic data traces. The method includes fitting at least a two-term AVO equation to at least three seismic data traces having small angles of incidence using a curve fitting technique to generate an AVO intercept and an AVO gradient, computing a plurality of synthetic seismic data traces using the AVO intercept and the AVO gradient, subtracting the synthetic seismic traces from the plurality of seismic data traces to generate a plurality of higher-order seismic data traces characterized by a residual AVO equation, and fitting the residual AVO equation to the higher order seismic data traces having large angles of incidence using the curve fitting technique to generate a higher order AVO attribute.
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Hughes Scott A.
Keith Jack
WesternGeco L.L.C.
WesternGeco, L.L.C.
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