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Patent
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G01V 1/40 (2006.01) B06B 1/06 (2006.01) G01V 1/18 (2006.01) G01V 1/20 (2006.01)
Patent
CA 1095160
K 8446 ABSTRACT A method and apparatus for measuring and identifying up- and down-traveling waves wherein both a velocity-sensitive and pressure- sensitive transducer are disposed. at a point below the earth's surface, as for example in a borehole that is refilled. The pressure transducer is designed to provide intimate contact with the formation surrounding the borehole, and in addition, is the electrical equivalent of the velocity transducer.
303878
Shell Canada Limited
Smart & Biggar
LandOfFree
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