E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/23
E21B 43/22 (2006.01) C08F 2/10 (2006.01) C09K 8/588 (2006.01)
Patent
CA 1181579
Abstract of the Disclosure Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing for- mations and in enhanced oil recovery processes are provided. Methods and systems for enhancing the recovery of oil from subterranean oil-containing formations are also provided. The viscous aqueous polymer solutions of the invention are prepared at the site of their use by polymerizing one or more water soluble polymerizable vinyl monomers in aqueous solutions which may contain high concentrations of one or more salts. The resultant viscous aqueous polymer solutions have improved properties including controlled polymer average molecular weight, controlled viscosity and stability in formation brines, increased tolerance to the presence of divalent metal cations and increased compatibility with oil well treating fluid additives.
407195
Company Halliburton
Swabey Ogilvy Renault
LandOfFree
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