The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 1992
Filed:
Sep. 04, 1990
Feliciano M Llave, Bartlesville, OK (US);
Thomas E Burchfield, Bartlesville, OK (US);
David K Olsen, Bartlesville, OK (US);
Akzo NV, Arnhem, NL;
Abstract
A method is disclosed for reducing the permeability of the more permeable zone of an underground formation having nonuniform permeability, the method comprised of injecting into the formation a blend comprised of a surfactant and an alcohol, said blend introduced in an amount effective to reduce the permeability of the more permeable zone of the formation. The preferred surfactant is an amine oxide, most preferably dimethyltallowamine oxide, delivered in water. The preferred alcohol is isopropanol. The disclosed method may optionally comprise the further step of injecting an alcohol slug following injection of the surfactant and alcohol blend.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile