Communications: electrical – Selective – Having electron beam device
Patent
1977-07-28
1978-12-19
Birmiel, Howard A.
Communications: electrical
Selective
Having electron beam device
181102, 73152, 166214, 166241, 340 155SW, G01V 140
Patent
active
041308166
ABSTRACT:
An acoustical logging tool having a plurality of long, extendable, resilient arms, and means for remotely extending free ends of the arms into close proximity to the wall of a borehole. A cylindrical transducer is mounted on the free end of each arm, with some of the transducers being used as transmitters and the remainder as receivers. The signals from the receivers are separately recorded to provide a side-by-side comparison of the signals. The proper spacing of the transmitters and receivers will produce a complete circumferential acoustic log of the borehole that can be used to detect the presence of vertical fractures.
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Vogel Charles B.
Worrell Gene T.
Birmiel Howard A.
Shell Oil Company
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