Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1986-01-27
1987-12-22
Walsh, Donald P.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
G01V 128
Patent
active
047150190
ABSTRACT:
A borehole logging tool employs an acoustic transmitter and at least one spaced-apart receiver. The transmitter is excited with a tone burst to cause the transmitter to resonate and generate acoustic tube waves. The rate of decay of the amplitudes of the tube waves recorded at the receiver following termination of the excitation of the transmitter is used to determine the amount of damping of the tube waves in the subsurface formation along the borehole wall.
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Huang et al., The Correlation of "Tube Wave" Events with Open Fractures . . . Part A, Geological Survey of Canada, Paper 81-1A, 1981, pp. 361-376.
Aron et al., Formation Compressional and Shear Wave Internal-Transittime Logging, Soc. Petroleum Engineers, 10/78, pp. 1-11.
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Medlin William L.
Zumwalt Gary L.
Gilman Michael G.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Steinberger Brian S.
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