Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1995-11-13
1997-12-30
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
67 21, 67 49, 67189, 364421, G01V 136, G01V 128
Patent
active
057038333
ABSTRACT:
A method for generating, recording and pre-processing high fidelity vibratory seismic data in a system that uses a plurality of vibratory sources includes the steps of measuring the motion of each of the vibrators, 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. The method may also include the steps of shot ensemble deconvolution, receiver ensemble deconvolution, statics correction, F-K filtering for noise, zero phase spiking deconvolution and model dephasing. A signal directly proportional to the actual signal that the vibrator is sending into the ground is used in pre-processing. The vibrator motion is measured to provide a signal that is used to process the data. The data is divided by the relative of the actual transmitted signal in frequency domain.
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Keen Malcolm D.
Mobil Oil Corporation
Moskowitz Nelson
LandOfFree
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