Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1983-09-22
1987-01-13
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
364422, 73152, G01V 128, G01V 140
Patent
active
046369945
ABSTRACT:
Methods for estimating shear wave travel time in formations of mixed lithology employing the compressional wave travel time in conjunction with other logging derived information. A shear/compressional wave travel time ratio is established for a sand formation as a function of the porosity of the formation. A shear/compressional wave travel time ratio is established for a shale formation as a function of bulk shale density as derived from the bulk density of the formation. A shale factor is used to compensate the two ratios to the mixed lithology of the measured formation providing a shear/compressional wave travel time ratio for the measured formation. Shear wave travel time is determined using the formation travel time ratio and a compressional wave travel time measurement.
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Fertl Walter H.
Frost Elton
Dresser Industries Inc.
Lobo Ian J.
McCollum Patrick H.
Moskowitz Nelson
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