Method for measuring electrical resistivity of a core sample of

Details Method for measuring electrical resistivity of a core sample of Method for measuring electrical resistivity of a core sample of

1992-02-19

1992-11-17

Snow, Walter E.

Electricity: measuring and testing

Of subsurface core sample

73153, 250255, E21B 4902, G01N 2304, G01V 302

Patent

active

051646722

ABSTRACT:
A two-phase fluid, flow having a first fluid and an immiscible second fluid, is passed through a core sample. The core sample is scanned with X-rays to produce a display of fluid distribution within the core sample. Electrical resistivity is measured along the length of the core sample for those intervals having uniform first fluid distribution. The two-phase flow is continued to repetitively decrease the first fluid saturation in a plurality of drainage cycles with electrical resistivity being again measured for each drainage cycle. Thereafter, the two-phase fluid flow is continued to repetitively increase the first fluid saturation in a plurality of imbibition cycles with electrical resistivity being again measured for each imbibition cycle.

REFERENCES:
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patent: 4467642 (1984-08-01), Givens
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patent: 4907448 (1990-03-01), Givens
patent: 4926128 (1990-05-01), Givens
SCA Guidelines for Sample Preparation and Porosity Measurement of Electrical Resistivity Measurements by N. L. Maerefat et al., The Log Analyst, 1990, pp. 68-75.

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