Process and device for detecting seismic signals in order to obt

Details Process and device for detecting seismic signals in order to obt Process and device for detecting seismic signals in order to obt

1994-02-03

1996-04-23

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 57, 367 41, G01V 128

Patent

active

055110380

ABSTRACT:
A process for preparing vertical seismic profiles (VSP) by bore drilling using, as the seismic source, the vibrations generated by the drilling bit. A cross-correlation between the bit signal and the signals collected by seismic geophone lines, is determined in which the bit signal is processed by arranging a plurality of several types of detectors on the bore drilling facility. A plurality of traces are recorded, in which the signal
oise components have different characteristics. These can be separated by means introducing filter functions by operating either on their Fourier Transforms or on the basis of their statistic distribution.

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Poletto et al.; "Orthogonalized Noise Subtraction"; May 26-30, 1991, 53rd EAEG Mtg., pp. 566-567.

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