Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent
1988-11-09
1990-10-23
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
324335, G01V 328
Patent
active
049655221
ABSTRACT:
A transmitter for an induction well logging tool, adapted to be disposed in the borehole of an oil well, develops an output signal for energizing the borehole formation which inherently consists of six separate signal components, the six components including four primary signal components which simultaneously energize the borehole formation inducing in the formation four primary eddy currents. These four primary eddy currents are detected by the array induction tool receiver, the received signals being used to determine the resistivity and conductivity of the borehole formation.
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European Patent Application, Publication No. 0 084 001, Date of Publicaiton of Application, Jul. 20, 1983.
Hazen Gary A.
Macune Don T.
Bouchard John H.
Garrana Henry N.
Schlumberger Technology Corporation
Strecker Gerard R.
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