PROCEDURE FOR DEVELOPMENT OF DEPOSIT OF OIL IN CARBONATE COLLECTORS Russian patent published in 2014 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: penetration of productive strata and subjacent water-bearing beds is made by injectors with subsequent construction and casing perforation, penetration of productive strata by producers with subsequent construction and penetration of the productive stratum, water-flooding of the productive stratum by downhole pumping in injectors from water-bearing beds to the oil-bearing bed, product extraction from the productive stratum through producers. According to the invention water-flooding of the productive stratum is made under permanent pressure with sequential operational delays of injectors less than 4 days. At that pressure compensation by water-flooding at operational delay of the injectors is made due to the closest injectors. In the process of oil production rate decrease, at water-flooding from water-bearing beds pressure compensation is made by water and/or reagents pumping from the mouths of the injectors.

EFFECT: increasing oil recovery of the deposit due to increase in oil displacement efficiency and increase of impact on hard to recover reserves with low drainage in oil-bearing beds.

2 cl, 1 ex