DOWNHOLE SUCKER-ROD PUMP FOR PRODUCTION OF PRODUCTS WITH GAS FACTOR Russian patent published in 2020 - IPC F04B47/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and can be used for oil production at high content of gas in pumped liquid. Pump for product extraction with gas factor includes cylinder with hollow plunger in it, in lower part of which there is installed a pressure valve. Suction valve is arranged at pump chamber bottom. Gas valve consists of case with seat and ball. From below the cylinder is equipped with a shank with a packer installed above the productive formation. Valve body is installed with a seat outside in the radial channel of the shank under the packer. Ball is pressed to seat by spring, and seat is made with possibility of longitudinal tight movement relative to housing with controlled pressing through spring ball so that at stroke of plunger upwards relative to cylinder valve passes gas into shank end and further into cylinder of pump in volume of not more than ¼ of working volume of cylinder.

EFFECT: invention allows removing gas from under-packer space by means of an adjustable valve, simplifying the design.

1 cl, 2 dwg