INSTALLATION FOR SIMULTANEOUS-SEPARATE OPERATION OF TWO BEDS Russian patent published in 2021 - IPC E21B43/14 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry, in particular to downhole pumping units. The installation includes a tubing string, a packer installed between layers, a liner with channels, a rod string and a sucker rod pump containing a plunger and a cylinder with a main hole in the wall. A casing that encloses the pump cylinders and forms an annular channel with it, communicating with the main hole in the cylinder wall. A separating piston, placed with the possibility of limited longitudinal movement down and up under the action of the plunger, with an additional piston and a channel with an additional discharge valve. An additional cylinder, coaxially connected to the main bridge with an opening and equipped in the lower part with a main suction valve, below the opening for an additional suction valve in the cylinder, an additional suction valve located in the shank communicated with the outlet with the annular channel, and the inlet with the shank channel, with one of the reservoirs, not communicated by another channel with the main suction valve, and the plunger cavity is communicated with the lift pipes. The annular channel communicates with the main cylinder with an additional hole in the upper part of the main cylinder at a distance from the main hole equal to the length of the plunger. The casing is made to match the length of the cylinders. The outlet of the inner channel of the separating piston is made in the lower part of the main piston at a distance from its end equal to the distance from the lower end of the main cylinder to the main hole in it, and the hole in the bridge between the cylinders is also communicated with the annular channel.

EFFECT: proposed installation allows, without increasing the transverse dimensions, to produce production from two layers with mixing of reservoir products and use it in wells with a small diameter of the production string.

1 cl, 4 dwg