G - Physics – 01 – V
Patent
G - Physics
01
V
324/9
G01V 3/18 (2006.01)
Patent
CA 1092191
ELECTROMAGNETIC WAVE LOGGING SYSTEM FOR DETERMINING RESISTIVITY AND DIELECTRIC CONSTANT OF EARTH FORMATIONS (D#74,694-Cl-F) ABSTRACT A system operating at radio frequencies in the range of 10 MHZ to 60 MHZ is provided for simultaneously determining the resistivity and dielectric constant of earth formatios in the vicinity of a well bore. A transmitter coil and two longitudinally spaced receiver coils are provided in the system. Circuit means for measuring the unnormalized amplitude ratio and the relative phase shift of electromagnetic waves at the spaced receiver coils are provided. A relationship is given whereby the formation dielectric constant and resistivity may be obtained from the amplitude ratio and relative phase shift measurements.
308366
Adams Larry L.
Cox Percy T.
Fuchs James A.
Meador Richard A.
Thompson Larry W.
Smart & Biggar
Texaco Development Corporation
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