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:
Sep. 19, 1989
Filed:
Aug. 31, 1988
Applicant:
Inventor:
Wayne E Luetzelschwab, Littleton, CO (US);
Assignee:
Marathon Oil Company, Findlay, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166273 ; 166274 ; 252-4553 ; 524555 ;
Abstract
A polymer solution makeup water containing hydrogen sulfide is pretreated with an oxygenating agent to convert the hydrogen sulfide to an inert compound. The treated water is then mixed with an acrylamide polymer to form a stable polymer solution for oil recovery applications.