Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1973-01-29
1982-04-06
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
364421, 367 59, G01V 136
Patent
active
043238769
ABSTRACT:
A search is made down each trace of a seismic record at the approximate period of the multiple events to find a trace segment which most resembles a selected later segment of the same trace. An autocorrelation procedure is initially employed to determine the approximate period of the multiples and a crosscorrelation procedure is then employed to determine the time alignment of the two segments which produces maximum correspondence between the two segments. The degree of correspondence is determined by a "least-squares-fit" procedure. A portion of the earlier segment is subtracted from the later segment. The amount of the earlier segment to be subtracted is determined by the degree of correspondence. The procedure is incremented along the trace until the entire trace has been processed. Each trace is handled in the described manner until the entire record has been processed.
REFERENCES:
patent: 3550074 (1970-12-01), Kerns et al.
patent: 3714621 (1973-01-01), Waters
Lunsford Delbert R.
Parrack Alvin L.
Beard William J.
Moskowitz Nelson
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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