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:
Mar. 17, 1992
Filed:
Feb. 21, 1991
Applicant:
Inventor:
Gabriel Prukop, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
1663051 ; 166273 ; 166275 ; 252-8554 ;
Abstract
A method for improving the injectivity of an injection well for water or gas injection into an underground hydrocarbon formation which comprises injecting into the formation through an injection well a sufficient amount of a solvent-in-water microemulsion comprising about 0.5% to about 5% by weight of an alkoxylated linear alcohol having about 10 to about 16 carbon atoms in the linear alcohol moiety and an average of about 5 to about 12 alkoxylate groups, about 0.5% to about 5% by weight of an alkylbenzene sulfonate having an alkyl chain of about 8 to about 20 carbon atoms, about 1% to about 10% by weight of an ethylene glycol alkylether solvent, and water.