Acoustic logging method for identifying subsurface formation bou

Details Acoustic logging method for identifying subsurface formation bou Acoustic logging method for identifying subsurface formation bou

1984-10-05

1987-07-28

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 27, 367 31, 367 75, 181102, G01V 140

Patent

active

046835571

ABSTRACT:
A borehole logging tool includes at least one acoustic energy transmitter and at least one spaced apart acoustic energy receiver. Acoustic energy signals travel from the transmitter to the receiver directly through the subsurface formation adjacent the borehole and indirectly through reflections from subsurface formation changes below the bottom of the borehole. The difference in travel times of the directly arriving and indirectly arriving signals are determined for like acoustic waveforms as a measure of the depth of the subsurface reflecting formations below the borehole.

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