Stabilizing polysaccharide solutions for tertiary oil recovery a

Details Stabilizing polysaccharide solutions for tertiary oil recovery a Stabilizing polysaccharide solutions for tertiary oil recovery a

1982-10-15

1984-07-10

Novosad, Stephen J.

Wells

Processes

Using microorganisms

166275, 252 855D, 435104, E21B 4322

Patent

active

044587538

ABSTRACT:
A method of tertiary oil recovery from petroleum-containing formations at elevated temperature comprises injecting a substantially oxygen-free aqueous saline solution of water-soluble polysaccharide biopolymer treated at pH of at least 5 by the addition of alkali metal borohydride as viscosity stabilizer.

REFERENCES:
patent: 3096293 (1963-07-01), Jeanes et al.
patent: 4141842 (1979-02-01), Abdo
patent: 4218327 (1980-08-01), Wellington
patent: 4232739 (1980-11-01), Franklin
patent: 4256590 (1981-03-01), Naslund et al.

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