Method for conducting capillary pressure drainage and imbibition

Details Method for conducting capillary pressure drainage and imbibition Method for conducting capillary pressure drainage and imbibition

1991-01-28

1992-01-14

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

73 38, E21B 4902

Patent

active

050799487

ABSTRACT:
A water-saturated core sample of a porous rock is placed in a sleeve which a hydrophobic membrane in one end and a hydrophilic membrane in a second end. A pressurized hydrocarbon is injected into the core sample through the hydrophobic membrane to displace the water in the core sample whereby it drains through the hydrophilic membrane into a collector. Upon a depressurization of the injected hydrocarbon below the displacement pressure of the hydrophilic membrane, the water imbibes back into the core sample through the hydrophilic membrane. Upon a pressurization of the imbibing water above atmospheric pressure the water displaces the hydrocarbon from the core sample through the hydrophobic membrane.

REFERENCES:
patent: 4381665 (1983-05-01), Levine et al.
patent: 4868751 (1989-09-01), Dogru et al.
patent: 4907448 (1990-03-01), Givens
patent: 4924187 (1990-05-01), Sprunt et al.
patent: 4926128 (1990-05-01), Givens
"Physical Principles of Oil Production", pp. 304-311.

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