Control of fluid flow during treatment of subterranean sites using well fluid injection

a technology of fluid flow and subterranean sites, applied in fluid removal, chemistry apparatus and processes, borehole/well accessories, etc., can solve problems such as reducing the sweep efficiency of water, and achieve the effect of improving oil recovery
US20120241148A1Inactive Publication Date: 2012-09-27EI DU PONT DE NEMOURS & CO
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
EI DU PONT DE NEMOURS & CO
Publication Date
2012-09-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed herein is a method to control distribution of injected microorganisms, nutrients or other chemical treatment fluids from a single injection well to multiple production wells. The sweep efficiency is improved preventing premature production of fluids from production wells with short breakthrough times. This is a useful technique for treatment of subterranean target sites for practice of Microbial Enhanced Oil Recovery and bioremediation.
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Description

[0001] This application claims the benefit of U.S. Provisional Application 61 / 387,494, filed Sep. 29, 2010.FIELD OF INVENTION

[0002] This disclosure relates to the field of enhanced oil recovery or bioremediation. More specifically, it relates to controlling flow of treatment fluids and / or microorganisms into subterranean strata to enhance oil recovery or bioremediation.BACKGROUND OF THE INVENTION

[0003] Primary techniques used in oil recovery which utilize only the natural forces present at an oil well site allow recovery of only a minor portion of the crude oil present in an oil reservoir. Oil well sites are locations where wells have been drilled into a subterranean stratum, containing oil, with the intent to produce oil from that stratum. An oil reservoir typically refers to a deposit of subterranean oil in a subterranean stratum. Secondary oil recovery methods, such as water flooding, that is injection of water through injection wells into the oil reservoir, have been used to force ...

Claims

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