PLANT FOR SIMULTANEOUSLY SEPARATED BED EXPLOITATION Russian patent published in 2011 - IPC E21B43/14 

FIELD: engines and pumps.

SUBSTANCE: invention refers to well pumping units. The unit includes tubing, main packer installed between upper and lower bed, pipe tail with main channel connected to below-packer bed, rod pump equipped with pressure valve, main suction valve and side suction valve, connected to the hole in pump cylinder wall. Rod pump is equipped with hollow plunger connected to hollow bars. There is a hollow body between pump cylinder and main valve the upper part of which is connected via the channel to back-pressure valve with tubing. In the cylinder below the side channel hole there located is dividing piston with the possibility of limited lateral movement upwards and downwards into body cavity. The inner cavity of the body has larger inner diameter than the cylinder. In the wells with three tapped beds there is additional packer above the main one, pipe tail is equipped with additional channel connected to inter-packer space. Pump cylinder that is above the main side valve is equipped with additional side suction valve. One of the pump suction valves is connected to over-packer space, the second is connected through additional pipe tail channel to inter-packer space, the third is connected through main pipe tail channel to below-packer space not connected to other suction valve.

EFFECT: provision of possibility to exploit three objects concurrently, each in its optimal mode.

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