DEEP GAS BYPASS DEVICE FOR WELL OPERATED BY SUCKER-ROD PUMP Russian patent published in 2019 - IPC E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to production of oil in well operated by bottom-hole rod pump and can be used for oil production with any content of associated gas. Proposed device comprises extra pair of "plunger-cylinder" arranged above bottom-hole pump. Said pair plunger is connected to the rod while the cylinder is connected to the tubing string. There are gas bypass valves for communication with in-tube cavity above and under the extra pair cylinder. This pair is similar to a pair of bottom-hole pump. Its connecting elements are made in the form of an adapter with gas-bypass valves mounted outside. Cylinder of the additional pair is selected along the length equal to the cylinder length of the bottom-hole pump pair. At that, for the well with normal or small gas factor the additional diameter pair cylinder is selected smaller, than the tubing string diameter. For a well with a large gas factor, an additional diameter pair is selected larger than that of the tubing string.

EFFECT: increasing operating efficiency of bottom-hole rod pump, increasing well flow rate and reducing power consumption.

1 cl, 3 dwg