Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1982-02-01
1986-02-11
Cangialosi, Salvatore
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 62, 367 74, G01V 134
Patent
active
045702462
ABSTRACT:
In accordance with the present invention, progressive changes in amplitude as a function of offset of common gathers can be more easily identified by emphasizing the degree of amplitude variation between traces of each gather along a seismic line, and after generating semblance coefficients, displaying the resulting "weighted" offset traces or representations of such traces as function of either horizontal offset or centerpoint values. A significant --and progressive --change in P-wave reflection coefficient as a function of the angle of incidence (within sections) indicates valuable characteristics, say the fluid hydrocarbon-bearing potential and/or lithology of the reflecting horizon.
REFERENCES:
patent: 3354985 (1967-11-01), Sparks
patent: 3622967 (1971-11-01), Foster et al.
patent: 4008459 (1977-02-01), Walker, Jr.
patent: 4316267 (1982-02-01), Ostrander
patent: 4330872 (1982-05-01), Bratton
patent: 4403313 (1983-09-01), Garotta
Neidell and Taner, "Semblance and Other Coherence Measures for Multichannel Data", Geophysics, vol. 36, No. 3, pp. 482-497 (1971).
Frasier Clint W.
Herkenhoff Earl F.
Ostrander William J.
Cangialosi Salvatore
Chevron Research Company
Issing Gregory C.
Keeling Edward J.
Messner H. D.
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