PUMP UNIT FOR SIMULTANEOUS SEPARATE OPERATION OF TWO FORMATIONS IN WELL WITH INCREASED GAS FACTOR Russian patent published in 2024 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used for extraction of products with increased gas factor from several horizons. Claimed pumping unit for simultaneous separate operation of two formations in well with increased gas factor, including flow string, liner with a packer installed on it, located between the upper and lower productive formations, a deep-well sucker-rod pump with two suction valves at the corresponding intake, one of the latter is communicated with the under-packer space through the liner, and the other one – with the over-packer space, and at least one pressure valve at the outlet to the cavity of the flow string, and a pipe for removal of associated gas from the under-packer space. Packer is equipped with a channel for tight fixation of the tube from above and communication through the gas valve, passing gas, of the space under the packer with the space above the packer. Tube outlet is connected to the flow string through the main bypass valve, cutting off the liquid, which is located at the level of the flow string with internal pressure below the formation pressure of the lower formation. Flow string above the liquid level in the above-packer space and with internal pressure below the formation pressure of the upper formation is equipped with an additional bypass valve.

EFFECT: simplified design of the pump unit for simultaneous separate operation of two formations in the well with increased gas factor.

1 cl, 1 dwg