Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent
1984-08-20
1987-07-07
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
324344, G01V 312
Patent
active
046789979
ABSTRACT:
Method and apparatus for use in introducing electromagnetic energy into subsurface earth formations and acquiring measurements relating to propagation of such energy therethrough. A logging tool body includes a plurality of transmitter and receiver antenna assemblies positionable against the borehole wall. Construction of each antenna assembly includes a cavity-backed slot resonated by lumped elements, the slots being oriented generally with their elongate dimension transverse to the tool body. The transmitters and receivers are interconnected, respectively, to a downhole source of electromagnetic energy operating nominally at 200 MHz and to appropriate receiver circuitry. Formation dielectric constants are determined from phase differences and relative amplitude ratios of energy from the formation incident on the receiver antennas.
REFERENCES:
patent: 2431124 (1947-11-01), Kees et al.
patent: 3441937 (1969-04-01), Clasby et al.
patent: 3944910 (1976-03-01), Rau
patent: 4052662 (1977-10-01), Rau
patent: 4077003 (1978-02-01), Rau
patent: 4319191 (1982-03-01), Meador et al.
patent: 4338567 (1982-07-01), Coates
patent: 4383220 (1983-05-01), Baldwin
patent: 4511842 (1985-04-01), Moran et al.
Oliver, "Dielectric Logging", Dresser Atlas, Dresser Industries, Inc.
"Electromagnetic Propagation . . . a New Dimension in Logging", Calvert, Rau and Wells, SPE 6542, Apr. 13, 1977.
"Dielectric Constant Logging, A Salinity Independent Estimation of Formation Water Volume", Meador and Cox, SPE 5504, Sep. 28, 1975.
"Advancements in Electromagnetic Propagation Logging," Wharton et al, SPE 9041, May 14, 1980.
"Dielectric Log", Dresser Industries, Inc. brochure, 1981.
Dresser Industries Inc.
Edmonds Warren S.
Eisenzopf Reinhard J.
McCollum Patrick H.
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