Process for the recovery of petroleum from subterranean...

Details Process for the recovery of petroleum from subterranean... Process for the recovery of petroleum from subterranean...

E - Fixed Constructions

21

B

31/23

E21B 33/138 (2006.01) C09K 8/588 (2006.01) C09K 8/90 (2006.01)

Patent

CA 1123186

PROCESS FOR THE RECOVERY OF PETROLEUM FROM SUBTERRANEAN FORMATIONS ABSTRACT OF THE DISCLOSURE (D#71,200-DTA-145-F) An improved polymer flood process for the recovery of petroleum from a subterranean formation wherein a slug of a fresh water aqueous solution of a salt-insensitive polymer is injected into the formation prior to the under- taking of the polymer flood using a fresh water solution containing a partially hydrolyzed polyacrylamide. -I-

323576

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