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:
Jul. 07, 1981
Filed:
Dec. 20, 1979
Applicant:
Inventors:
George W Powers, Jr, Crown Point, IN (US);
H Robert Froning, Tulsa, OK (US);
Davis L Taggart, Tulsa, OK (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 / ; 166270 ; 166274 ; 2605 / ;
Abstract
A method is disclosed for reducing formation plugging impurities in a sulfonate surfactant used in enhanced oil recovery operations which comprises contacting said surfactant with an effective amount of an aldehyde having from 1 to about 18 carbon atoms. In a preferred instance, a method is disclosed for the treatment of sulfonate surfactants useful in enhanced recovery processing to substantially reduce the formation plugging impurities, typically inorganic sulfite salts.