Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent
1996-03-22
1998-11-24
Snow, Walter E.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
324338, G01V 328, G01V 310, G01V 315
Patent
active
058412816
ABSTRACT:
A method of determining the conductivity of earth formations penetrated by a wellbore. The method includes inserting an induction well logging instrument into the wellbore. The instrument includes a transmitter, a source of alternating current connected to the transmitter, and a receiver. The transmitter is energized with the alternating current, voltages induced in the receiver are recorded, and area enclosed with respect to a baseline, by voltage peaks present in the recorded voltages is determined. The enclosed area corresponds to the conductivity.
REFERENCES:
patent: 4739272 (1988-04-01), Griffin et al.
Kunz et al., "Basic Theory of Induction Logging" and Geophysics, vol. XXVII No. 6 Part 1 Dec. 1962 pp. 829-858.
Beard David R.
Tabarovsky Leonty A.
Yanzig Carlos A.
Fagin Richard A.
Snow Walter E.
Western Atlas International Inc.
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