METHOD OF WELL OPERATION AT THE FINAL STAGE OF DEVELOPMENT OF GAS DEPOSITS Russian patent published in 2020 - IPC E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, namely, to operation of gas wells at development of oil and gas condensate fields at the final stage. In the method, at the final stage of development of gas deposits, reduction of backpressure at the wellhead is performed with the help of a mobile compressor unit connected to a flow column through wellhead equipment. In the production string there installed are dispersing devices in the form of rings with cone-shaped surface every 200–300 m from the shoe. Disperser ring height is 3–9 mm, width is 11–41 mm, confuser taper angle is 70–90°, diffuser taper angle is 30–60°. Outer diameter of disperser ring is assumed equal to inner diameter of tubing string. Ratio of inner diameter of tubing string to height of disperser is 8.8–11.6.

EFFECT: increased efficiency of liquid removal from bottomhole by its lifting to day surface and increase of gas flow rate.

1 cl, 1 dwg, 1 tbl