Method for determining oil saturation in a subsurface formation

Details Method for determining oil saturation in a subsurface formation Method for determining oil saturation in a subsurface formation

1983-10-25

1985-05-21

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4900

Patent

active

045178364

ABSTRACT:
A borehole logging system includes a borehole gravity meter and a resistivity logging tool. A borehole gravity log and a resistivity log are produced over a select depth interval in a borehole. The bulk density of the subsurface formation surrounding the borehole over the select depth interval is measured from the gravity log. The bulk resistivity of the formation surrounding the borehole over the select depth interval is measured from the resistivity log. The bulk density and bulk resistivity measurements are combined to derive a measurement of the residual oil saturation of the subsurface formation surrounding the borehole for the select depth interval.

REFERENCES:
patent: 3946604 (1976-03-01), Anderson
patent: 4397181 (1983-08-01), Caldwell

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