FIELD: oil and gas producing industry, particular, repair of wells ejecting the freezing fluid under conditions of subzero temperatures. SUBSTANCE: well is provided with bottom-hole regulator. Bottom-hole regulator should not prevent the nonfreezing fluid from entering the formation. After accumulation of nonfreezing fluid in the formation, it flows out to the surface through bottom-hole regulator which limits its coming from the formation. EFFECT: higher efficiency.
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Authors
Dates
1997-05-20—Published
1991-02-12—Filed