SU492679A1 - Deep well pumpless shaft installation - Google Patents

Description

(54) DEEP PUMP TUBE-RELAYED INSTALLATION

one

The invention relates to pumping equipment for lifting liquid from wells, in particular oil; operating at the same time two productive formations, the fluid of which is not i must be mixed at. Removing and lifting to the surface.

Known depthless pump-free installation with a double-acting piston pump, the piston of which is located

the discharge valve of the lower discharge cavity, and in the cylinder - two suction valves.

The purpose of the invention is to carry out the separate operation of one well of two layers without mixing their products.

This is achieved in that a discharge valve is installed in the pump cylinder of the upper injection cavity, which communicates with the upper reservoir and the annular space formed by the columns of the pump and casing pipes, and the lower discharge cavity communicates with the lower reservoir and the internal space of the pump tubes. (

The drawing shows a deep-well pump I rodless installation,

In the well with the opened productive.

mi layers A. and B and cased column 1 down on the column of pump tubes; a device consisting of a shank 2 with a seating saddle 3, a sub 4 and a packer M 5.

The seating saddle 3 serves to prevent liquid from flowing from the shank to the interpacker space. Packer 5

(It serves to separate the productive sites: A and B.

; After planting and crimping the packer 5, the pump tubes are disconnected from the tail, wick using the left-hand sub 4.

The pumping unit, which is lowered into the well on the string of pumping tubes 6, consists of a submersible pump and a submersible electric motor, in the housing 7 of which excitation windings (stator) 8 are placed, creating a traveling magnetic field. The effect of this floor imparts the available movement to the hollow core 9, which simultaneously serves as the shaft of the submersible pump. The pump consists of a cylinder 10, inside which a plunger 11 is moved, connected to the core-rod 9. The valve system 12-15 serves to provide alternately-suction of fluid into the pump and pump it to the stand. A packer 16 is attached to the pump casing, which serves to separate the areas; suction and pumping fluid from the reservoir A of the reservoir A. The pump works as follows. Pr the course of the plunger 11 upward fluid from the lower layer B through the shank 2 and the suction valve 14 enters the lower chamber of the pump. At the same time, from the upper chamber, the liquid through the upper nodotalny valve 15 and the cavity between the housing 7 and the stator 8 of the submersible electro. the motor is fed into the annular space formed by casing strings of 1 X pump 6 pipes. When the plunger moves downward, the production of the upper layer A through the valve 12 draws in into the upper chamber of the pump, and from the lower chamber the fluid through the valve 13 and the hollow bark rod 9 is fed into the pumping cavity. Thus, the use of a double action pump allows the fluid to be extracted and supplied to the surface separately. Subject of the invention: Deep-free pumpless shaft installation: an installation with a double-acting double-acting pump with a piston located on the: discharge valve of the lower pressure cavity, and in the cylinder - two suction valves, which I Separate operation of one borehole of two layers without mixing their production; in the pump cylinder there is installed a discharge valve of the upper pressure cavity communicating with the upper layer and the annular space formed by the columns Pumping: x and casing. pipes, and the lower injection cavity communicates with the lower layer and the inner space of the pumping pipes.