Electricity: measuring and testing – Of subsurface core sample
Patent
1988-03-30
1989-10-24
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Of subsurface core sample
73153, G01V 306, G01V 312
Patent
active
048765120
ABSTRACT:
A method for determining at wellsites the swelling-clay content of shales and shaly sandstones earth formations whereby a sample of the formation is washed with a fluid having a water activity substantially less than that of water, which fluid may contain a soluble cation, and measurements of the sample's dielectric constant are made at a preselected frequency for subsequent comparison to calibration curves, thereby obtaining a measurement of the welling-clay content of the formation. The determinations of the swelling-clay content may be performed at different levels depending on the nature of the samples.
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Kroeger Michael K.
Leung Peter K.
Longo John M.
Steiger Ronald P.
Edmonds Warren S.
Eisenzopf Reinhard J.
Exxon Production Research Company
Montes Raul R.
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