METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2014 - IPC E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: method involves pumping of working agent through injectors and recovery of the product through producers. The section is selected at the deposit with the following characteristics: remaining reserves of at least 3000 thousand t, reservoir pressure equal or less than initial reservoir pressure, water cut of the produced product within limits of 80-99% and injectability of injectors within limits of 40-140 m³/day at wellhead pressure of 4-15 MPa and permeability of at least 500 mD against results of hydrodynamic research. At this section an injector is selected with perforation interval according to hypsometric marks lying at the maximum height and at least 1 m above the perforation interval of the nearest producer. In the selected injector the injection volumes are limited up to values less than 50 m³/day. For the other injectors placed at 1 m below the perforation interval of the producer the injection volumes are increased per 5% in comparison with volumes injected earlier. In this mode injection is made within 3 months under control over changes in operation mode for producers by measurements of bottomhole pressure and water cut. Similar operations are made with other groups of wells for the selected section of development.

EFFECT: higher oil recovery of the deposit.

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