RU2679323C1 - Jet pump installation - Google Patents

Abstract

FIELD: engines and pumps.SUBSTANCE: invention relates to a jet pump installation. Device comprises a pump casing with holes and an insert. Insert is made with the possibility of placing inside the case and removing from it. In addition, the insert is designed to create ejection. O-rings are available to seal the insert. In this case, a movable lock is provided in the upper part of the insert. It is made in the form of a collet fixing the insert in the body from moving upwards. Moreover, the lock collet is designed to interact with the balls inserted into the ball retainers. They are pressed into three holes in the upper part of the insert body. As a result of this interaction, the upper wide part of the collet provides for pushing the balls outward, towards the body in which the annular groove is located. It is made with the possibility of engagement with the side protruding parts of the balls. Diameter of the balls is greater than the thickness of the insert body and less than the thickness of the installation case. Insert is made with the possibility of its delivery by a transport swab with an emphasis for activating the movable lock by moving it down.EFFECT: increase the operational reliability of the jet pump unit.1 cl, 4 dwg

Description

The invention relates to the oil industry and is intended for the development and intensification of the influx of oil from the reservoir for the purpose of well research and impact on the borehole formation zone in complicated conditions.

The closest device taken by the authors as a prototype of the invention is the installation of a jet pump for oil production, containing a pump housing with holes. The upper and lower parts of the pump housing have internal protrusions to ensure a tight fit of the jet pump insert. The seals located in the upper and lower parts of the jet pump insert interact with the internal protrusions in the pump housing, ensuring a tight fit of the jet pump insert (see RU 164426 U1, published on 08.27.2016).

Moreover, in the known construction, the insert is attached only by the interaction of the protrusion of the insert with the lower inner protrusion of the pump housing. Moreover, during operation, the insert may shift relative to the pump casing, causing malfunctions in the pump.

Thus, the task to which the invention is directed, is to increase the reliability of the jet pump installation by eliminating the displacement of the insert during operation of the installation.

The problem is solved by the jet pump installation, which contains a pump housing with holes, an insert made with the possibility of inserting and removing from the pump housing, o-rings for sealing the insert. At the same time, a movable lock is provided in the upper part of the insert, made in the form of a collet, and fixing the insert in the housing from moving up. Moreover, the lock collet is made with the possibility of interaction with balls inserted in ball retainers, which are pressed into three holes in the upper part of the insert body. As a result of this interaction, the upper wide part of the collet squeezes the balls outward, towards the housing, in which there is an annular groove made with the possibility of engagement with the lateral protruding parts of the balls. The diameter of the balls is greater than the thickness of the insert body and less than the thickness of the installation housing.

Thus, the set of essential features of the invention improves the operational reliability of the jet pump installation.

The essence of the proposed jet pump installation is illustrated by drawings:

Figure 1 - installation casing.

Figure 2 - universal removable inserts:

2a - for direct circulation

2b - for reverse circulation.

Figure 3 - the upper part of the installation with an inserted insert and lock.

Figure 4 - swab transport.

Installation of a jet pump for oil production consists of a housing (Fig. 1) consisting of a pump housing (3) hermetically connected to each other, a lower sub (1), and a upper sub (4). A filter (2) is installed on the pump housing (3). The pump casing (3) has radial holes communicating the internal cavity of the pump with the annular space of the well. An annular groove (5) is made in the upper part of the upper sub (4) to accommodate the lock balls of the removable insert in it. In this case, the housing (figure 1) is designed to accommodate replaceable inserts.

As an example of interchangeable inserts, the universal insert (Fig. 2) is designed to distribute flows during pump operation and create ejection. The universal insert containing the insert body (10) is installed in the pump housing (3) and sealed in it with rings (27). The insert has two assembly options: for direct (Fig. 2a) and for reverse (Fig. 2b) circulation, which differ in the sequence of installation of replacement parts - a diffuser (18), a holder (11), a nozzle (17), a mixer (9) and an insert (16), which are installed in the upper insert (80). In the bottom insert there are openings for the removal and supply of working fluid, and in the top insert (80) there are openings for the intake of the produced fluid. On top of the insert is equipped with a plug (29) (option for direct circulation), or without it (option for reverse circulation). A filter (30) with a valve pair (28) installed in it is provided below.

The transport swab (Fig. 4) is designed to transport interchangeable inserts along the tubing string, consists of an axis (20) with bushings (31) mounted on it in a certain sequence, washers (40) and cuffs (50) pulled together by a tip ( 60). A connector (71) with a shear pin (81) is screwed onto the lower end of the axis to connect the swab to the inserts.

Also in the upper part of the insert (Fig. 3) there is a movable lock (6) made in the form of a collet, fixing the insert through the balls (7) in the pump housing from moving up. In this case, the balls (7) are inserted into three holes on the upper part of the insert with ball clamps 8 installed in them, which are pressed into the insert body. Also, lock 6 releases the insert.

On the transport swab (Fig. 4), a special stop is rigidly connected with it - a connector (71), which allows you to activate the locking mechanism of the inserts by moving down the movable lock (6), which in turn acts on the balls (7), which are placed in the inner cylindrical sample (5) of the installation enclosure.

The castle operates as follows. When lowering the movable lock (6), made in the form of a collet, down, the upper wide part of the collet squeezes the balls (7) located in the insert body (10) outward.

The outer sides of the balls (7) protrude beyond the insert body (10) and engage with the annular groove (5) of the installation body. Thus, the position of the insert is fixed from moving up and down.

This eliminates the displacement of the insert up / down during the operation of the jet pump installation, increasing its reliability.

Claims (1)

An inkjet pump installation comprising a housing with holes, an insert configured to place inside the housing and remove from it, an o-ring for sealing the insert, which is configured to create an ejection, characterized in that a movable lock is provided in the upper part of the insert, made in the form collets and a locking insert in the housing from moving upward, and the lock collet is made with the possibility of interaction with balls inserted in ball retainers, which are pressed into three holes tia in the upper part of the insert body, as a result of this interaction, the upper wide part of the collet squeezes the balls outward, towards the body in which there is an annular groove made with the possibility of engagement with the side protruding parts of the balls, the diameter of the balls being greater than the thickness of the insert body and less than the thickness case installation, while the insert is made with the possibility of its delivery by transport swab with emphasis to activate the movable lock by moving it down.

Images