PLANT FOR SIMULTANEOUS SEPARATE OIL PRODUCTION FROM LOW-YIELD WELLS Russian patent published in 2025 - IPC E21B43/14 

FIELD: mining.

SUBSTANCE: invention relates to the oil industry, in particular to downhole pumping units operating on low-yield wells, in which the fluid flow rate of the upper object is less than 2 m³/day. Plant for simultaneous separate oil production from low-yield wells includes a tubing string, a packer, a shank, a bottom-hole pump equipped with an additional suction valve arranged on the side wall of its cylinder. On the first pipe of the tubing string, a filter is installed outside in the form of an inverted truncated cone, which is a metal mesh restricted from above and from below with metal rings. Lower metal ring is installed on the coupling connecting the first and the second pipes of the tubing string. Upper metal ring is additionally equipped with a sealing rubber ring and a hose in the upper part. Hose is connected to casing valve. Casing valve is connected to head line of well-donor. Additional suction valve divides the cylinder along the length into two parts proportional to productivity of lower formation and sum of productivity of upper formation and liquid supplied from well-donor.

EFFECT: improving efficiency of a plant for simultaneous separate operation of low-yield wells due to maximum oil extraction; improving operating reliability of the plant.

1 cl, 1 dwg