Method and apparatus for processing seismic signals from low ene

Details Method and apparatus for processing seismic signals from low ene Method and apparatus for processing seismic signals from low ene

1975-09-29

1977-11-15

Birmiel, Howard A.

Communications: electrical

Selective

Having electron beam device

340 155CC, 340 155CP, 340 155DP, 360 32, G01V 124, G01V 136

Patent

active

040587916

ABSTRACT:
A system and method for carrying out seismic operations with low energy sources, which involves operating the source at spaced points along a seismic spread, the source points are spaced far enough apart so that their seismic waves originate at different points and travel by different paths to the geophones. The geophone outputs cannot be time stacked. The geophone signals are amplified at constant gain and digitized to 1 bit. If the low energy source is a vibratory source, the 1 bit signals are correlated with a 1 bit version of the sweep signal. The resulting correlograms are digitized to 1 bit and then C.D.P. stacked and displayed. If the low energy source is impulsive, the 1 bit amplified signals are C.D.P. stacked and displayed.

REFERENCES:
patent: 2920306 (1960-01-01), Feagin et al.
patent: 2981928 (1961-04-01), Crawford
patent: 3571788 (1971-03-01), Backus et al.
patent: 3731268 (1973-05-01), Laudrum, Jr.
patent: 3883725 (1975-05-01), Fort et al.

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