OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2024 - IPC E21B43/20 E21B43/30 

FIELD: mining; oil, gas and coke-chemical industry.

SUBSTANCE: invention relates to development of oil deposit in carbonate reservoirs of fracture-porous type. Oil deposit development method involves drilling of production and injection wells, water injection into injection wells and extraction of products from production wells. Drilling is carried out in two rows of production wells and in two rows of vertical injection wells, symmetrically located relative to rows of production wells at distance of 300 m. Production wells are drilled alternating vertical and horizontal wells. Then, production strings of all wells in the effective pay are lowered and perforated. Water is pumped into vertical injection wells with alternation of rows of wells. If water content is more than 60%, water-isolating composition is pumped into vertical production wells in amount of 8 m³ of water-isolating composition per 1 m of formation thickness and it is pushed into the formation with water with subsequent process exposure. In horizontal production wells, water cut is monitored once every two weeks.

EFFECT: higher efficiency of development of oil deposit, prolongation of water-free mode of well operation, reduction of water content of extracted product, as well as connection of new carbonate reservoirs of fractured-porous type to development.

1 cl, 1 dwg, 1 tbl