Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Patent
1980-01-25
1982-11-16
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
324362, G01V 324
Patent
active
043596878
ABSTRACT:
An apparatus is disclosed for borehole measurements of the induced polarization of earth formations. The apparatus consists of an induced polarization logger capable of measuring both in-phase and quadrature conductivities in the frequency domain. A method is described which uses these measurements to determine cation exchange capacity per unit pore volume, Q.sub.v, brine conductivity, C.sub.w, and oil and water saturations, S.sub.o and S.sub.w, in shaly sands.
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Vinegar Harold J.
Waxman Monroe H.
Shell Oil Company
Strecker Gerard R.
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