Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Treating animal or plant material or micro-organism
Patent
1979-11-01
1982-04-20
Warden, Robert J.
Chemistry: molecular biology and microbiology
Process of utilizing an enzyme or micro-organism to destroy...
Treating animal or plant material or micro-organism
166246, C13L 300
Patent
active
043260373
ABSTRACT:
A method for enhancing the ability of polysaccharides in aqueous solution to flow through a porous medium comprises contacting the polysaccharides with an endoenzyme capable of hydrolyzing at least one of the linkages of the sugar units of the polysaccharides and maintaining the polysaccharides in contact with the enzyme under hydrolysis conditions for a time sufficient to decrease the tendency of the polysaccharides to plug the porous medium yet insufficient to decrease the viscosity of the aqueous polysaccharides by more than 25%. The partially hydrolyzed polysaccharides are useful as thickening agents for flooding water used to recover oil from oil-containing subterranean formations.
REFERENCES:
patent: 3966618 (1976-06-01), Colegrove
patent: 4010071 (1977-03-01), Colegrove
patent: 4119491 (1978-10-01), Wellington
patent: 4165257 (1979-08-01), Stokke
Compere Alicia L.
Griffith William L.
Holleman James W.
Besha Richard G.
Hamel Stephen D.
The United States of America as represented by the United States
Uzzell Allen H.
Warden Robert J.
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