METHOD FOR REDUCTION OF ANNULAR PRESSURE OF MECHANIZED WELLS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC E21B43/12 F04F5/54 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used for oil production from wells by mechanized method, in particular, electric-centrifugal pumps with high content of free gas. Method involves combined tying of high-pressure gas or oil well with high gas factor, opening formation with high potential, and low-pressure oil well with high gas factor, opening formation with low potential, through wellhead gas jet device, pumping products of high-pressure and low-pressure wells from formations, separation of free gas of low-pressure well from liquid, further supply of free gas to annular space of low-pressure well, further supply of high-pressure flow into nozzle of wellhead gas jet device, ejection by low-pressure flow-gas low-pressure jet device from annular pressure of low-pressure well, while reducing the value of annular pressure of low-pressure well, subsequent recovery of pressure of mixed flow to value of linear pressure of common oil-and-gas collector.

EFFECT: technical result consists in improvement of efficiency of oil production from wells.

1 cl, 2 dwg