Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2007-01-23
2007-01-23
Keith, Jack (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S047000, C367S050000, C367S052000
Reexamination Certificate
active
10958522
ABSTRACT:
A method is disclosed for amplitude preserving Kirchhoff time migration. The method includes calculating estimates of the geometrical spreading terms using a constant velocity approximation. Takeoff and emergence angles are accurately calculated based on a model of velocity which varies with respect to travel time. An image can be calculated at at least one travel time using the estimated weights and calculated takeoff and emergence angles.
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King David Graham
Lee Seongbok
Fagin Richard A.
Hughes Scott A.
Keith Jack
PGS Americas, Inc.
Thigpen E. Eugene
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