Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1982-12-17
1987-04-28
Kyle, Deborah L.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
181102, 181108, 367 87, 367151, 367902, 367911, G01V 100, G01V 140
Patent
active
046619330
ABSTRACT:
An apparatus and method for the measuring the transverse dimensions of a hole such as in an oil well including a sonde on which an electro-acoustic transducer is mounted in an offcentered position in relation to the axis of the sonde. This transducer has two opposite active faces so as to simultaneously transmit acoustic pulses in diametrically opposite diections from the sonde. When the sonde is centered in the hole, the transducer picks up the echoes retransmitted by the wall of the hole in the two directions, at different times. A recording is made of these times and preferably also of an indication of the amplitude of each of these echoes to obtain both a diameter measurement and an indication of the condition of the hole surface. Several transducers are provided, superposed and oriented along various diameters distributed around the axis of the sonde.
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Froelich Benoit G. L.
Seeman Bronislaw
Garrana Henry N.
Kyle Deborah L.
Rostoker Michael D.
Schlumberger Technology Corporation
Steinberger Brian S.
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