Secondary oil recovery process

Details Secondary oil recovery process Secondary oil recovery process

E - Fixed Constructions

21

B

166/33

E21B 43/22 (2006.01)

Patent

CA 1077834

SECONDARY OIL RECOVERY PROCESS (D#73,081 -F) A B S T R A C T Oil is recovered from an oil-bearing subterranean formation penetrated by an injection well and a production well by injecting into the formation via the injection well a solution of a normally solid polymerized methacrylate and oil displaced by the injected solution is recovered from the formation via the production well. Optionally, after the solvent solution has been injected, a hydrocarbon slug such as crude oil, petroleum distillate, a soluble oil composition, etc. may be injected and, if desired, this may be followed by injection of water. -I-

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