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Patent
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G01V 1/40 (2006.01) G01V 1/02 (2006.01) G01V 1/16 (2006.01)
Patent
CA 1199718
SHEAR WAVE ACOUSTIC LOGGING SYSTEM Abstract An acoustic well logging tool employs a bender-type transducer 42 as a point source of an acoustic shear wave. The bender-type transducer 42 includes opposed unrestricted planar surfaces mounted within a compartment filled with a coupling liquid 45. The unrestricted surfaces of the transducer 42 are oriented longitudinally along the axis of the tool and exposed to the coupling liquid. The dimensions of the transducer 42 in the direction parallel with the longitudinal axis of the tool exceed its dimensions in the transverse direction. One or more bender-type transducers of the same configuration as the transducer 42 may be employed as acoustic receivers in the tool. The active surfaces of the receiving transducers are oriented in substantially the same direction as the active surfaces of the transmitting transducer 42.
419551
Angona Frank A.
Zemanek Joseph Jr.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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