METHOD OF OIL DEPOSIT DEVELOPMENT Russian patent published in 2012 - IPC E21B43/22 

FIELD: oil-and-gas production.

SUBSTANCE: proposed method comprises injection of water solution of biopolymer-silicate composition via injection well into bench and extracting oil via production well. Note that silicate reagent-to-biopolymer ratio equals 1-0.25. Note here that injection is performed by pattern method from multiple-well pump station into group of injection wells at a time in cycles, 3-4 yearly, amount of said solution making 10 vol. % of threshold volume during first year of threshold volume, 15 vol. % during second year, and 20 vol. % of bench water-saturate section during third year.

EFFECT: higher efficiency, lower costs.

1 tbl, 1 ex