Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1988-10-12
1989-11-14
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 75, 364421, G01V 136
Patent
active
048812099
ABSTRACT:
Method for processing converted mode seismic data. Compressional and converted compressional to shear wave data is acquired by generating compressional energy into a subsurface formation and recording the amplitude of reflections as a function of time at spaced locations along a line of exploration. A series of compressional to shear wave velocity (Vp/Vs) ratios are selected based on an analysis of the acquired seismic data and the shear wave velocity for each Vp/Vs ratio is determined according to the following relationship: ##EQU1## where k=Vp/Vs. Data corresponding to each Vp/Vs ratio is stacked together, the series of stacks are correlated to the originally acquired seismic data to determine the actual Vp/Vs ratio for the formation and the shear wave velocity is derived. The originally collected data is then corrected for normal moveout and stacked.
REFERENCES:
patent: 4596005 (1986-06-01), Frasier
patent: 4597066 (1986-06-01), Frasier
patent: 4611311 (1986-09-01), Frasier
John T. Bellatti, "A Field Investigation Comparing Conventional Compressional-Wave, Converted-Wave, and Horizontally-Polarized Shear Wave-Reflections"; Aug. 10, 1981.
John E. Graves, "A P-SV Converted Wave Reflection Seismic Prospecting System"; Sep. 7, 1979.
Bloomquist Marvin G.
Warner Barry N.
Hager Jr. George W.
Lobo Ian J.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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