OPERATING METHOD FOR WATER-FLOODED GAS OR GAS CONDENSATE WELL Russian patent published in 2019 - IPC E21B43/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, namely to operation of water-flooded gas or gas condensate wells, and can be used at oil and gas condensate deposits at development of gas and gas condensate deposits at the final stage. According to the method, the well is supplied with the main tubing string and the central tubing string concentrically placed in it with formation of annular space between them, inside the central part of the central tubing string, every 200–250 m from the shoe, dispersers are installed in the form of a ring with a cone-shaped surface, at that height of the disperser ring makes 5–7 mm, width – 10–14 mm, and angle between the ring inner surface of the ring and inner pipe surface is 130–140°, end of central tubing string is placed below end of main tubing string, and gas is extracted simultaneously along central tubing string and annular space. At that, gas-liquid mixture is extracted along the central production string, gas is extracted from it with flow rate equal to one and a half times higher than flow rate required for fluid discharge from the column, and gas flow rate is set in annular space so that it does not exceed the working flow rate. Gas-liquid mixture of the central tubing string is separated on the surface to produce gas and liquid, the liquid is recycled after extraction of valuable components, and condensate is preliminarily extracted from the liquid of gas condensate wells.

EFFECT: effective removal of liquid from well bottomhole by its lifting to day surface and operation of water-flooded gas or gas condensate wells at the final stage of development.

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