FIELD: oil production. SUBSTANCE: pumping in 5 20 soda aqueous solution. Sulfate/soda mixture that is byproduct produced in sulfur extraction in alumina production process. 5 20 aqueous solution of commercial-grade lignosulfonate mineralized up to 18 g/l is used as deposit forming agent. EFFECT: effective isolation. 4 tbl
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Authors
Dates
1995-10-20—Published
1992-11-25—Filed