Method for determining electrical anisotropy of a core...

Details Method for determining electrical anisotropy of a core... Method for determining electrical anisotropy of a core...

G - Physics

01

N

G01N 27/12 (2006.01) G01N 27/04 (2006.01) G01N 33/24 (2006.01)

Patent

CA 2063289

F-6071(72)-L(PAC) Abstract of the Disclosure A method for determining electrical anisotropy of a core sample from a subterranean formation. The method comprises the steps of: shaping said core sample into the form of a cylinder; applying a confining pressure to said core sample; saturating said core sample with a first fluid; passing a current through said fluid-saturated core sample; measuring voltages in a plurality of radial directions through said core sample; which are normal to the cylindrical axis of said core sample at each of a plurality of spaced-apart positions along said axis; determining electrical resistivities in said plurality of radial directions through said core sample from said plurality of measured voltages; and comparing each of said determined electrical resistivities to identify the radial direction of any electrical anisotropy in said core sample. Apparatus for determining resistivity of a core sample of a subterranean formation is also disclosed.

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