Electricity: measuring and testing – Of subsurface core sample
Patent
1999-09-13
2000-12-26
Oda, Christine K.
Electricity: measuring and testing
Of subsurface core sample
7315211, G01V 306, E21B 4900
Patent
active
061665460
ABSTRACT:
A method for determining a relative clay content of at least a portion of a well core taken from a subterranean geologic formation by: determining the relationship of the clay content of the well core portion to the dielectric constant of the well core portion at a selected frequency at relatively few locations over a substantial length of the well core portion by measuring the clay content by a clay determination test such as x-ray diffraction, thin section analysis, sieve analysis or laser particle analysis and the dielectric constant at the locations; and, measuring the dielectric constant of the well core portion at a large plurality of spaced apart other locations on the well core portion at the selected frequency; translating the large plurality of dielectric measurements according to the relationship into relative clay content measurements. The dielectric constant is representative of the water constant of the well core portion, which is related to the clay content of the well core portion.
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Klein James D.
Scheihing Mark H.
White Gary Lee
Andersen Henry S.
Atlantic Richfield Company
Oda Christine K.
Scott F. Lindsey
Sloat Robert E.
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