G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 1/28 (2006.01) G01V 1/32 (2006.01) G01V 1/36 (2006.01)
Patent
CA 2186068
A method of deconvolving surface measured seismic signals reflected from a sub-surface sequence of geological formations, in which the sub-surface sequence of geological formations contains an areally stable acoustic impedance sequence. An inverse filter is derived from correlating a seismic signal with a synthetic seismic log weighted at the time location of the areally stable acoustic impedance sequence. This inverse filter is applied to stacked or pre- stacked seismic signals to produce a deconvolved seismic signal. In a particularly powerful embodiment of the invention, several inverse filters are derived in this manner at several geographic locations within the area of stability of the areally stable acoustic impedance sequence. These several inverse filters are then averaged to produce an average inverse filter which is used to deconvolve a seismic signal in the area of stability. Apparatus for carrying out the invention is also disclosed.
Lambert Anthony R.
Peterson Fred M.
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