Recovering petroleum from subterranean formations

Wells – Processes – Distinct – separate injection and producing wells

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166263, E21B 4324

Patent

active

042079454

ABSTRACT:
A process for enhanced recovery of petroleum from subterranean formations wherein a vapor mixture of steam and a petroleum fraction containing naturally occurring phenolic and carboxylic compounds is injected via an injection well, and a mixture of steam condensate and petroleum is produced via a production well.

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