FIELD: oil producing industry. SUBSTANCE: compound for stimulation of oil recovery from formation contains the following components, mas.%: carbamide 4.0- 16.0; aluminum chloride or nitrate (in terms of anhydrous one) 2.0-4.0; urotropin 2.0-8.0; the balance, water. Compound possesses improved filtering characteristics and is applicable in formations with temperature below 60 C. EFFECT: higher efficiency. 1 tbl
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Authors
Dates
1996-09-20—Published
1993-02-08—Filed