Method for oil recovery using a modified heteropolysaccharide

Wells – Processes – Distinct – separate injection and producing wells

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Details

166246, 252 8554, 435101, 435104, C08B 3700, C12P 1904, E21B 4322

Patent

active

048740446

ABSTRACT:
A process for recovering hydrocarbons from a subterranean hydrocarbon bearing formation penetrated by an injection well and a production well which comprises injecting an aqueous drive fluid into the formation and forcing the drive fluid through the formation to recover the hydrocarbons from the production well.

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patent: 4286059 (1981-08-01), Kang et al.
patent: 4440225 (1984-04-01), Holzwarth
patent: 4466889 (1984-08-01), Miller et al.
patent: 4481294 (1984-11-01), Downs
patent: 4647657 (1987-03-01), Wan
patent: 4754809 (1988-07-01), Van Zanten et al.

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