E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/3
E21B 47/14 (2006.01) G01V 1/40 (2006.01)
Patent
CA 1166148
F-0793 APPARATUS FOR AND A METHOD OF ACOUSTIC WELL LOGGING Abstract Well logging apparatus for continuously logging the shear and compressional wave transmission characteristics of materials located adjacent to a borehole comprises at least a first, multidirectional acoustic transmitter (102) and a second, point source acoustic transmitter (104). A plurality of receivers, at least one for each transducer, are mounted in spaced relation from said transmitters, the receivers comprising at least a first, compressional wave receiver (110-114) exhibiting a relatively greater sensitivity to acoustic waves produced by said first transmitter, and at least a second, shear wave receiver (106-108) exhibiting relatively greater sensitivity to acoustic waves produced by said second transmitter. Each transmitter (102, 104) is selectively energized in response to the detection of at least one wave by at least one of the receivers (106-114).
399233
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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