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. 09, 1977
Filed:
Nov. 06, 1975
Applicant:
Inventor:
James E Hessert, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166294 ; 106194 ; 106208 ; 166270 ; 166295 ; 252316 ; 260 / ; 260D / ;
Abstract
A composition of matter comprising water, a polymer capable of being crosslinked by polyvalent metal cations, a reducible species containing said polyvalent metal in a higher oxidation state, and a reducing agent selected from among KI, MnCl.sub.2, Mn(NO.sub.3).sub.2, and K.sub.4 Fe(CN).sub.6 which composition is capable of forming a gel by crosslinking is provided. A method is also provided for in situ gel formation using this crosslinking composition. In one of its embodiments a method is provided for increasing the rate of gel formation by the addition of H+ ion.