Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1988-02-16
1989-08-15
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
367 73, 367 75, 364422, G01V 128, G01V 140
Patent
active
048581984
ABSTRACT:
A formation surrounding a borehole is traversed with a logging tool employing an acoustic transmitter and a pair of spaced-apart acoustic receivers. Acoustic energy traveling through the formation from the transmitter to the receivers are detected. The energy of tube waves contained within the detected acoustic energy is measured. Such measured tube wave energy is calibrated in response to measurements of tube wave energy ratio carried out in a zone of the formation having zero permeability. This calibrated tube wave energy is transformed into formation permeability in accordance with a measured relationship between permeability and tube wave energy ratio.
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Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Moskowitz Nelson
Speciale Charles J.
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