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:
Jan. 06, 1987
Filed:
May. 23, 1985
Applicant:
Inventor:
Wayne E Luetzelschwab, Littleton, CO (US);
Assignee:
Marathon Oil Company, Findlay, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166252 ; 166273 ; 166274 ; 166275 ; 166295 ; 252-8554 ; 524827 ;
Abstract
A process for producing an aqueous partially hydrolyzed polyacrylamide solution employed to recover oil from a subterranean oil-bearing formation. The properties of viscosity and screen factor for an aqueous polymer solution are correlated to the polymerization reaction parameters. Values of the parameters are selected which correlate to the specific predetermined polymer properties capable of meeting the performance demands of the formation and the aqueous partially hydrolyzed polyacrylamide solution is produced at the selected values of the reaction parameters.