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:
Aug. 10, 1976
Filed:
Nov. 06, 1972
Bruce L Knight, Findlay, OH (US);
John S Rhudy, Littleton, CO (US);
William B Gogarty, Littleton, CO (US);
Other;
Abstract
The injectivity profile of a heterogeneous formation and/or vertical conformance is improved by injecting an aqueous solution into the formation, the solution containing a polymer obtained as a product of radiation-induced polymerizatin of acrylamide and/or methacrylamide and acrylic acid, methacrylic acid, and/or alkali metal salts thereof. The polymerization is preferably carried out in a 10-60% aqueous solution with gamma radiation; the aqueous monomer solution preferably contains 25-99% acrylamide and 1-75% sodium acrylate. Immiscible, miscible, or miscible-like displacing processes can be used in conjunction with this invention.