BYPASS VALVE Russian patent published in 2021 - IPC E21B34/08 

FIELD: gas industry.

SUBSTANCE: invention relates to underground borehole equipment and can be used to bypass gas from the column of pumping and compressor pipes of the well into the inter-pipe space. The bypass valve contains a body with a side opening and a longitudinal channel communicating with each other, with a non-return valve installed in it. The case is put on a rod, with a hole made in it for communication with the side hole of the case. The check valve is installed above the side opening of the housing and provides venting of gas when the pressure in the pump and compressor pipe column exceeds the pressure in the inter-pipe space. In the upper part, the housing contains a cover that covers the longitudinal channel. On the outer side surface of the housing above the check valve, a through hole is made for the gas outlet into the inter-tube space. A plug is screwed into the longitudinal channel from below, containing radial holes in the upper part that connect the longitudinal channel with the side hole of the housing.

EFFECT: ensuring the bypass of gas from the column of pump and compressor pipes into the inter-pipe space, preventing the sprinkling of mechanical impurities installed inside the check valve body, simplifying the cleaning of the inner cavity of the body from contamination after the valve is operated in the well.

3 cl, 1 dwg