Electricity: measuring and testing – Of subsurface core sample
Patent
1991-03-19
1992-04-14
Wieder, Kenneth A.
Electricity: measuring and testing
Of subsurface core sample
73153, G01V 302
Patent
active
051051540
ABSTRACT:
A cylindrical core sample of a subterranean formation is place into a sleeve under confining pressure. At least one electrode array extends through the sleeve and makes contact with the core sample. The array is in a plane normal to the core sample and has an even number of electrodes equally spaced about the sleeve. A current is passed through the core sample and voltages are measured across each pair of electrodes that are spaced 180.degree. apart around the sleeve. Such measurements are utilized to identify the radial direction of any electrical anisotropy in the core sample, particularly under differing fluid saturation conditions.
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Marinelli et al., "Core Tester Contact Assembly", IBM/TDB, vol. 9, No. 3, Aug. 1966, pp. 296-297.
Givens Wyatt W.
Kennedy W. David
Edmonds Warren S.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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