OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2012 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: oil is extracted through production wells in cyclic mode and working agent is pumped through injection wells. Cyclic operating mode of production wells includes a week (seven days) of which during 5 days, from Monday to Friday, each day during 8 hours, from 23 p.m. till 7 a.m. the product is extracted, and 16 hours - from 7 a.m. till 23 p.m. the well is shutdown. Those hours mean cheap electric power rates, due to which low prime cost of extracted oil is provided. On Sundays and/or Saturdays the product is extracted during 1-2 days without well shutdown. Capacity of downhole pumping equipment is chosen based on extraction of the product accumulated in the well during shutdown within 16 hours and oil extraction duration within 8 hours. Extraction is performed till minimum level of bottom hole pressure, but not less than oil degassing pressure. In injection wells having hydrodynamic connection to the above production wells, in order to provide the proposed cyclic operating mode of production wells, pumping volumes are restricted if constantly operating wells are in operation, or operating time of injection wells is restricted.

EFFECT: increase in oil recovery and reduction of oil extraction expenses.

2 cl, 1 ex