Oil recovery by waterflooding employing graphite oxide for mobil

Details Oil recovery by waterflooding employing graphite oxide for mobil Oil recovery by waterflooding employing graphite oxide for mobil

1975-08-01

1976-12-21

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166273, 252 855D, E21B 4322

Patent

active

039982700

ABSTRACT:
A method for the recovery of oil from an oil-containing subterranean formation by waterflooding employing as an injection medium an aqueous dispersion of a hydrophilic carbon oxide. According to a preferred form of the invention, particulate graphite oxide characterized by a surface layer in which the molar carbon to oxygen ratio is from about 2 to about 3 is utilized as a viscosifier to decrease the mobility ratio between the injected water and oil, thereby improving the efficiency of the waterflood. The graphite oxide may be characterized by a surface substantially free of --COOH groups, thereby being insensitive to divalent metal ions present in the subterranean formation. According to another form of the invention, the graphite oxide is reactive with the divalent metal ions within the subterranean formation to form a plugging deposit and thereby to function as a sealant for highly permeable strata within the formation.

REFERENCES:
patent: 1651311 (1927-11-01), Atkinson
patent: 2875831 (1959-03-01), Martin et al.
patent: 3294164 (1966-12-01), Hardy et al.
patent: 3412792 (1968-11-01), Parker et al.
patent: 3559735 (1971-02-01), Corrin
patent: 3691071 (1972-09-01), Corrin
patent: 3749171 (1973-07-01), Marx
patent: 3817330 (1974-06-01), Christopher et al.

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