High fidelity vibratory source seismic method for use in vertica

Details High fidelity vibratory source seismic method for use in vertica High fidelity vibratory source seismic method for use in vertica

1995-11-13

1998-08-04

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 48, 367 41, 181111, G01V 124, G01V 136

Patent

active

057904731

ABSTRACT:
A method for recording and pre-processing vertical seismic profile high fidelity vibratory seismic data includes the steps of measuring the motion of the vibrator which is related to the vibrator applied force times a transfer function of minimum phase, causal, linear system relating the actual vibrator output with the measured vibrator motion, separating signals according to the generating source of each, determining a ratio by dividing the vibratory seismic data by the measured motion of the vibrator to remove the unknown applied force leaving the earth reflectivity times a time derivative divided by a minimum phase function, minimum phase band pass filtering the resulting ratio and performing minimum phase deconvolution to remove the time derivative divided by the transfer function of minimum phase.

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