METHOD FOR REDUCING GAS PRESSURE IN THE OUTLET OF PRODUCING OIL WELLS FROM THE PRESSURE MAINTENANCE SYSTEM Russian patent published in 2021 - IPC E21B43/12 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be used to reduce the bottomhole pressure on the formation or to raise the dynamic level above the pump intake in wells with a low dynamic level. A method is proposed for reducing gas pressure in the annulus of oil producing wells from a reservoir pressure maintenance system, in which a jet pump is installed, the vacuum chamber of which is connected to the annular space of an oil producing well by a separate line, and the outlet of the jet pump through a gate valve is connected to the well fluid sampling line of the producing well in front of the linear valve. In this case, the working flow of the jet pump is water from the high-pressure water conduit of the injection well of the reservoir pressure maintenance system. From the wellhead section of the high-pressure water conduit of the injection well, a bypass water supply line is drawn through an additional gate valve, on which a jet pump is installed. The operation of the jet pump is controlled by changing the pressure at its inlet by adjusting the flow area in the choke chamber to create the required pressure. At the same time, the excess gas pressure in the annular space of the producing oil well is reduced by taking gas from the annular space of the oil well and pumping it into the well fluid selection line.

EFFECT: technical result is to increase the efficiency of the technology for removing excess gas pressure from the annulus of producing oil wells.

1 cl, 1 dwg