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:
Oct. 22, 1985
Filed:
Feb. 06, 1984
Applicant:
Inventors:
Francis E DeBons, Richmond, TX (US);
Lawrence E Whittington, Katy, TX (US);
Larry D Pedersen, Canal Winchester, OH (US);
Assignees:
Getty Oil Company, Houston, TX (US);
Reed Lignin, Inc., Greenwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
252 / ; 166274 ; 166275 ;
Abstract
A method for the enhanced recovery of oil comprised of injecting into an oil containing formation a surfactant system comprised of an oil soluble amine modified lignin and an anionic or nonionic surfactant; driving the surfactant system through the formation and producing the oil mobilized by the surfactant system. A surfactant composition useful for enhanced oil recovery methods comprised of an oil soluble amine modified lignin and an anionic or nonionic surfactant.