SU1514973A1 - Down-hole sucker-rod double-acting pump - Google Patents

Abstract

The invention makes it possible to increase the productivity and reliability in operation of a downhole sucker-rod pump with double action. In the housing 1 is installed with the formation of the annular cavity 2 movable cylinder (C) 3. In C 3 there is a fixed hollow plunger 4. The suction valve (K) 7 of the upper working chamber 5 C 3 is installed in the plunger 4, pressure valve K 9, 10 working chambers 5 , 6 are hydraulically communicated with the cavity 2. The plunger 4 is made of two parts 11, 12, each of which is located in a corresponding chamber 5, 6 equipped with a partition 13 C 3 and connected to the housing 1. A 9 is installed above the partition 13, to 10 - under the partition 13. To 8 is installed in the housing 1. The housing 1 in the upper part is equipped with Telem 14 with openings 15, C 3 - rods 16 installed in openings 15 with the possibility of connection with a column of pump rods. Parts 11, 12 are connected to housing 1 by means of nozzles 17, 18. 2 C.p. f-ly, 2 ill.

Description

- 1514973

I in the plunger 4, the injection K 9 and 10 of the working chambers 5 and 6 are hydraulically communicated with the cavity 2. The plunger 4 is made of two parts 11 and 12, each of which is located in the corresponding chamber 5 or 6 equipped with a partition 13 C 3 and associated with the start-up 1. C 9 is installed above the baffle I .13, C 10 - under the partition 10

13. To 8 is installed in the housing 1. Co), the start 1 in the upper part of the opening is separated by the disconnector 14 with the openings 15, C 3 by the rods 16 installed in the openings 15 with the possibility of connection with the column of pump rods. Parts 1 and 12 are connected to housing I via nozzles 17 and 18. 2 C.p. f-ly, 2 ill.

The invention relates to a technique for oil production, in particular to well pumping pumps of double action, and can be used in the oil production industry.

The purpose of the invention is to increase productivity and reliability in operation.

FIG. 1 is a schematic representation of a well pumping double-acting pump; general view; in fig. 2 is a section A-A in FIG. one.

The borehole double-acting sucker-rod pump comprises a housing 1 mounted in the housing 1 with the formation of an annular cavity 2, a movable cylinder 3, located in the cylinder 3, a stationary hollow plunger 4, an upper 3 and a lower 6 working chambers. Lindra 3 with suction 7 and 8 and on-injecting 9 and 10 valves, we take the suction 7 to: g1apan top 5 of the working chamber installed in the hollow plunger 4, and the discharge 9 and 10 valves of both chambers are hydraulically communicated with the annular cavity 2. Stationary hollow the plunger 4 is made of two parts (the upper 11 and the lower 12 plungers), each of which is located in the corresponding working chamber: the upper 1 1 plunger in the upper 5 working chamber and the lower 1 plunger in the lower 6 working chamber provided with a partition 13 of the cylinder, and Zana with body 1. Forcing The 9 valve of the upper chamber 5 is installed above the partition 13 of the cylinder, and the discharge 10 valve of the lower 6 working chamber is located under the partition 13 of the cylinder, and the suction 8 valve of the lower 6 working chamber is installed in the housing 1.

five

The housing 1 in the upper part is provided with an uncoupler 14. with holes 15, and the cylinder 3 with rods 16, mounted in the holes 15 of the uncoupler 14, which can be connected to the column of pump rods (not shown).

The parts of the fixed hollow plunger 4 — the upper 11 and the lower 12 plunger 5 — are connected to the housing 1, respectively, by means of nozzles 17 and

18. Disconnector 14 is provided with a channel.

19, which promotes the absorption of liquid into the upper 5 working chamber at

0 cylinder 3 down.

The double well sucker pump operates as follows.

When cylinder 3, connected by means of rods 16 to the column of pump rods, moves upward, the volume of the lower 6 working chamber increases, its suction 8 valve and fluid from the well (not shown) open.

0- enters the lower working chamber. At this time, when the volume is reduced in the upper 5 working chamber, the chamber is pumped through the open 9 discharge valve into the annular cavity 2 and then through the holes 15 in the spout 14 in the pump tube. .

During the course of the C-chord 3 downward, the volume of the upper 5 working chamber increases Q s, its suction valve 7 opens to the liquid from the well through the channel 19 enters the upper working chamber. At this time, the liquid in the lower 6 working chamber at

5, a decrease in the volume of the chamber is injected through the opening discharge valve 10 into the annular cavity 2 and further through the openings 13 in the disconnector 14 into the tubing string.

five

Claims (2)

1. A well double-acting sucker-rod pump containing a housing mounted in the housing to form. annular cavity movable cylinder located in the cylinder,. The inner hollow plunger, the upper and lower working chambers of the cylinder with suction and discharge valves, wherein the suction valve of the upper working chamber is installed in the hollow plunger, and the discharge valves of both chambers are hydraulically communicated with the annular cavity, characterized in that operational reliability, the hollow plunger is made of two parts, each of which is located in a corresponding /four . 1S Compiled E, Ginsburg Editor K.Krupkina Tehred A, Kravchuk Order 6209/36 Circulation 522  State Committee for Inventions and Discoveries under the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab. 1514973 a working chamber of a cylinder equipped with a septum and connected to the housing; the discharge valve of the upper working chamber is installed above the cylinder partition; and the discharge valve of the lower working chamber is located under said partition, with the suction valve of the lower chamber installed in the housing 2. A pump pop, 1, characterized in that the housing in the upper part is provided with an isolator with holes, and the cylinder with rods installed in the holes of the isolator with the possibility of connection to the column of pump rods, 3, a pump of popp, 1 and 2, characterized in that the parts of the plunger are connected to the housing by means of nozzles. f9 {rig.2 Proofreader E. Lonchakova Subscription