FIELD: oil production. SUBSTANCE: cooled zone is created in a stratum by pumping in working agent at the temperature below one in well bottom by not less than 10 C. Then gel-forming agent is pumped in the stratum. Pumping in is stopped before beginning of gel- forming process in cooling zone of the stratum. Then the well is stopped for a while to complete with gel-forming process. Then oil is extracted. EFFECT: high productivity. 5 cl
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Authors
Dates
1996-08-10—Published
1993-12-14—Filed