Enzyme enhanced oil recovery (EEOR) for cyclic steam injection
OwnerJohn L. Grayinventor
Life of this patent
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Abstract
The present disclosure relates to the release or recovery of subterranean hydrocarbon deposits and, more specifically, to a system for enhanced oil recovery (EOR), by utilizing stabilized enzymatic fluid and cyclic injection of steam or heated fluid into subterranean formations.
Claims21
An enzymatic fluid for enhanced recovery of oil or other hydrocarbon deposits in a subterranean formation, wherein said deposits are releasable by initially adding said enzymatic fluid directly to a pump for pumping said fluid into said oil formation followed by a period of time allowing said fluid to soak said formation, followed by injection of either water or steam or both into said formation, followed by an additional period of time allowing water, steam, and enzymatic fluid to soak within said formation, followed by recovery of said deposits by pumping or other means.
A method for enhanced recovery of oil or other hydrocarbon deposits in a subterranean formation using an enzymatic fluid, wherein said deposits are releasable by initially adding said enzymatic fluid directly to a pump for pumping said fluid into said oil formation followed by a period of time allowing said fluid to soak said formation, next injecting either water or steam or both into said formation, next allowing an additional period of time for soaking by water, steam, and enzymatic fluid within said formation, followed by recovery of said deposits by pumping or other means.
A system for enhanced recovery of oil or other hydrocarbon deposits in a subterranean formation using an enzymatic fluid, wherein said deposits are releasable by initially adding said enzymatic fluid directly to a pump for pumping said fluid into said oil formation followed by a period of time allowing said fluid to soak said formation, next injecting either water or steam or both into said formation, next allowing an additional period of time for soaking by water, steam, and enzymatic fluid within said formation, followed by recovery of said deposits by pumping or other means and wherein said fluid is initially diluted or heated or both prior to adding said fluid to said formation, and wherein adding said fluid after initial steam injection or cycling of said steam is accomplished.
Dependencies are inferred from the claim text.