COMPOSITION FOR OIL PRODUCTION AND METHOD FOR OIL PRODUCTION USING IT Russian patent published in 2022 - IPC C09K8/584 

FIELD: oil industry.

SUBSTANCE: group of inventions relates to oil production. The composition for oil production includes alkoxylated glyceryl sulfonate, in which the hydrocarbon radical contains from 9 to 18 carbon atoms, the number of ethoxy groups is from 0 to 24, the number of propoxy groups is from 8 to 15, the number of glyceryl groups is from 1 to 1.5; alkylbenzene sulfonate, in which the hydrocarbon radical contains from 11 to 20 carbon atoms; alkoxylated alcohol, in which the hydrocarbon radical contains from 9 to 18 carbon atoms, the number of ethoxy groups is from 3 to 26, the number of propoxy groups is from 11 to 15, while the mass ratio of alkoxylated glyceryl sulfonate, alkylbenzene sulfonate and alkoxylated alcohol is from 1.5:0.6:1 to 11.4:4.5:1, respectively.

EFFECT: provision of interfacial tension values below 0.01 mN/m in mineralization conditions from 1 to 3% and water hardness from 150 to 2000 mg/l, characteristic of reservoir waters of Western Siberia, in reservoir conditions, increased oil recovery, simplification of the preparation of the composition for oil production.

18 cl, 11 dwg, 10 tbl, 11 ex