Apparatus for acoustically investigating a borehole

Details Apparatus for acoustically investigating a borehole Apparatus for acoustically investigating a borehole

1980-06-30

1983-05-03

Wilbur, Maynard R.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

181104, 181105, 367 86, G01V 140, G01V 100

Patent

active

043822908

ABSTRACT:
An apparatus is described for acoustically investigating a casing in a borehole with a source of acoustic energy that is directed at the reflecting surface of an acoustic reflector in front of which is an acoustically transparent window. The inclination of the window relative to the reflecting surface is selected to deflect secondary transmissions and thus reduce window produced interferences. Several embodiments are described.

REFERENCES:
patent: 3504758 (1970-04-01), Dueker
patent: 3504759 (1970-04-01), Cubberly, Jr.
patent: 3974476 (1976-08-01), Cowles
patent: 4084582 (1978-04-01), Nigam

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