METHOD FOR OIL DEPOSIT DEVELOPMENT Russian patent published in 2022 - IPC E21B43/20 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used in the development of oil fields. The method includes the allocation of lithofacies zones and regulation: reducing the permeability of the reservoir water supply channels by massive one-time injection through all injection wells of the edges of compositions of a certain type and volume, selected taking into account the dominant geological and technological factors and providing intra-reservoir flow deviation within each of the selected lithofacies zones. A massive one-time treatment of all injection wells using flow-deflecting compositions is carried out on facies with rocks of the greatest permeability, on which the hydrodynamic connection of facies wells is established by area, while isolation work is carried out on the producing wells of these facies to limit the inflow of reservoir water, and on other facies with reduced permeability, single selective treatment of injection wells is carried out. At the same time, the formation temperature, the intake capacity of injection wells, the water content of the extracted products, the production of reserves and the permeability of the reservoir are used as the main geological and technological factors for the selection of flow-deflecting compositions for individual lithofacies zones.

EFFECT: increase in the efficiency of the impact on the reservoir, a decrease in the water content of the extracted products and an increase in the oil recovery coefficient.

3 cl, 2 tbl, 2 ex