Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1988-03-21
1989-12-26
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 43, 181112, G01V 128
Patent
active
048902640
ABSTRACT:
A seismic exploration method and apparatus in which non-uniformly distributed noise signals generated by wind, machinery, or surface wave propagation and received by the sensing geophones are cancelled by the utilization of adaptive filter processing. A number of horizontally sensitive geophones are disposed along the surface of the earth to detect surface waves induced in the surface of the earth at a plurality of spaced locations throughout an entire area of investigation. Similarly, a number of wind noise and mechanical noise detectors are utilized to detect airwave and noise signals at a plurality of locations throughout the area of investigation. The outputs of the surface wave detectors, the wind noise detectors and the mechanical noise detectors may then be utilized in conjunction with an adaptive filter to effectively cancel the effects of such interferences on reflected seismic wave signals at multiple locations throughout the area of investigation so that non-uniformly distributed noise signals may be accurately eliminated.
REFERENCES:
patent: 3397754 (1968-08-01), Roden
patent: 4458341 (1984-07-01), Goebel
patent: 4556962 (1985-12-01), Widrow
patent: 4630246 (1986-12-01), Fogler
patent: 4750156 (1988-06-01), Abrams et al.
patent: 4757480 (1988-07-01), Gutowski
"Adaptive Noise Cancelling: Principles and Applications," Widrow et al., Proc. IEEE, vol. 63, #12, Dec. '75.
Crews Gary A.
Martinez David R.
Atlantic Richfield Company
Dillon Andrew J.
Lobo Ian J.
Metrailer Albert C.
Scott F. Lindsey
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