Delayed in situ crosslinking of acrylamide polymers for oil recovery applications in high-temperature formations
CA 1297401 C · Owner: Marathon Oil Company · Inventors: Sydansk, Robert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket 850003-E, DELAYED IN SITU CROSSLINKING OF ACRYLAMIDE POLYMERS FOR OIL RECOVERY APPLICATIONS IN HIGH-TEMPERATURE FORMATIONS ABSTRACT, A process for treating a region in a high-temperature hydrocarbon-bearing formation with a gel for hydrocarbon recovery applications. The gel is prepared by mixing a single aqueous gelation system at the surface comprising a solution of a polyvalent metal crosslinking agent and an unhydrolyzed acrylamide polymer. The system is injected into a desired treatment region of the hightemperature formation wherein the polymer is hydrolyzed in situ. The gelation system is then yelled to completion in the treatment region. RFB:bcp
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.