SU1420241A1 - Deep-well sucker-rod pumping unit - Google Patents

Abstract

Invention m. used in the operation of wells, the production of which contains sand. The purpose of the invention is to increase the reliability of the installation and to prevent plug formation in the wells. A double-plunger pump 1 is placed in the column (K) 2 of pumping pipes and fixed in its upper part by means of a castle support 3 to form chambers 4, 5. Chamber 4 is formed between the outer surfaces of the plungers 6, 7 and cylinders 8, 9, chamber 5 - between the outer surfaces (Л nU N9 О tsD 4

Description

Cylinders 8, 9 and an internal K 2 surface. On K 2, under support 3, an additional check valve 12 is installed. Shank 13 is placed under pump 1, connected by lower cylinder 9 and sealed at lower end 14 K 2. In the shank 13 there is an uncoupler 15 with a discharge valve; a tan 16, made in the form of a nozzle 17, extending beyond the shank 13, serving as a jet for the jet, and communicating with the chamber 5. The chambers 4, 5 communicate with each other through the upper parts the walls of the cylinder 9 are radial channels 18. The pistons 6, 7 are interconnected and with K 19 sucker rods. During operation, the sediment is permanently loosened with a relatively clean water-jet and is brought to the surface with the pumped liquid. 1 il.

one

The invention relates to the technique of oil production, in particular to well pumping sucker-rod installations, and can be used in the oil and gas industry during the operation of wells, whose products contain pesok.

The purpose of the invention is to increase the reliability and prevent the formation of boreholes / sands with sand spreading by constant loosening of sediments at the bottom of a well under the influence of a jet effect of a liquid.

The drawing shows a schematic representation of a borehole pumping unit, a general view.

The well pumping unit contains a two-plunger pump 1 placed in the column of pump tubes 2 and fixed in its upper part by means of a castle support 3 with the formation of chambers 4 and 5, one of which is filled between the surface of plungers 6 and 7 and cyl. (pump lines 8 and 9 of the pump, and the second between the outer surfaces of the cylinders 8 and 9 of the pump and the internal one (the bottom surface of the column of pump tubes 2, suction 10 and at least one pressure valve 11). The installation is equipped with at least one additional suction they valve 12 raspolozhenngm pumping on the column pipe 2 at the hinge pillar 3, the shank 13 placed under the pump associated with the bottom of the pump cylinder 9 and compacted in the lower end 14 columns Hb pumping pipes. In hvostov11ke 13 ustlnoklen disconnector 15 ya1usknym

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 16, made in the form of you

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connecting pipe 17, which serves as a direction for the liquid jet, and communicates with the chamber 5, formed by the outer surfaces of the cylinders 8 and 9 of the pump and the inner surface of the column of pumping tubes 2. Both chambers 4 and 5 are aligned between a through the upper channel walls of the lower cylinder 9 of the radar channel; 18. In turn, the plungers 6 and 7 are connected with each other and with the column of pump rods 19.

Well shtanga Pumping unit works in the following 1 D1 way.

When the string of pumping rods 19 and plungers 6 and 7 are moving downward, the suction valve 10 closes, pressure in chambers 4 and 5 drops, additional suction valves 12 open, and water and oil mixture is sucked from the fluid level in the annulus to annular chambers 4 and 5 At the same time, through the open injection valves 11, the liquid mixture, containing sand and located under the working plunger 7, flows into the cavity) 1 and HISM.

When pumping rods 19 and plunl; ORIGIN 6 and 7 move upward in chambers 4 and 5, pressure is increased, additional valves are closed, and exhaust valve 16 is opened, v through it is water-to-oil mixture, in the annular chamber 5, goes through the pipe 17 to the bottom of the well, producing a discharge of sediment. At the same time through the cavity of the shank 13 and opened the main valve 10 from the receiving part (not marked)

3

the pump under the working plunger is sucked in a liquid mixture containing sand.

Thus, during the operation of the installation, the sediment is loosened with a relatively clean water-oft jet and is brought to the surface with the pumped liquid.

Claims (1)

Invention Formula A borehole pumping unit containing a double-plunger pump, housed in a column of pumping pipes and secured in its upper part by means of a locking support to form chambers, one of which is made between the outer surfaces of the plungers and pump cylinders, and the other between the outer surfaces of the cylinders pump and the inner surface of the column of pump tubes, suction and discharge 241 valves, characterized in that, in order to increase the reliability and prevent probkoobrazovanii in wells with sanding by continuous loosening of sediments on the bottom of the well under the influence of the jet effect of the liquid, the installation is equipped with at least one an additional suction valve located on the column of pumping pipes under the castle support, a shank placed under the pump connected to the lower cylinder of the pump and sealed at the bottom of the column of pumping pipes, in the shank there is an uncoupler with an exhaust valve made out of the outside of the shank nozzle and reported with the chamber formed by the outer surfaces of the cylinders of the pump and the inner surface of the column of pump tubes, both chambers communicating with each other through in the wall of the lower cylinder radial channels.