RU152703U1 - DEVICE FOR TESTING A PUMP AND COMPRESSOR PIPE COLUMN - Google Patents

Abstract

A device for crimping a string of tubing in a well, comprising a hollow body with connecting threads at the ends, a flushing tee, a sleeve, a catcher casing with a cap and a catcher, a seat for a locking member, a locking member consisting of a landing head with a fishing head, a ball and elastic centralizer-parachute, characterized in that on the elastic centralizer-parachute of the locking body there are identical openings removed at the same distance from its axis, and on the landing head above the elastic a parachute center mounted metal disk with holes located above the holes of the elastic centralizer-parachute, and in the landing head coaxial to it, with the possibility of axial movement and with the possibility of closing the holes of the elastic centralizer-parachute, an additional disk is installed, and in the cavity of the hollow body under the additional disk a hollow cylinder is installed, and on the outer side wall of the hollow cylinder, a protrusion is made in the form of a washer located coaxially with this cylinder and at the lower end of this cylinder but.

Description

The utility model relates to the oil and gas industry, namely, devices for crimping a string of tubing.

A device is known for crimping a pipe string, comprising a cylindrical body, a sealing element mounted on the housing, a saddle, wherein the saddle is made in the form of an upper end of the narrowing of the central channel of the crimping sleeve mounted on the pipe string below the crimping interval, and the sealing element is made in the form of a spherical end in the middle of the cylindrical body and prefabricated cuff, consisting of alternating metal and rubber rings mounted in a cylindrical sample made on the outer The surface in the lower part of the cylindrical body under the spherical end face, the upper end of the cylindrical body equipped with a fishing head, and on the outer surface of the cylindrical body with the possibility of limited axial movement, a centralizer-parachute is installed, while the spherical end face of the cylindrical body is made with the possibility of tight interaction with the saddle ( RF patent 61336, IPC ЕВВ 33/12).

The disadvantages of this technical solution are:

- design complexity;

- no device is provided for catching a locking member when it is washed out of a pipe string;

- cure of the locking body is carried out using a fishing tool, lowered into the tubing string on the rods;

- Disposable locking device.

Closest to the proposed device is a device for crimping a string of tubing in a well, comprising a hollow body with connecting threads at the ends, a flushing tee, a sleeve, a catcher casing with a cap and a catcher, a saddle for a locking member, a locking member, consisting of a landing head with fishing head, ball and elastic centralizer-parachute (RF patent No. 90477, IPC ЕВВ 17/00, publ. 10.01.2010).

The objective of the proposed utility model is to increase efficiency.

The problem is solved in that in the device for crimping the tubing string in the well, comprising a hollow body with connecting threads at the ends, a flushing tee, a coupling, a catcher casing with a cap and a catcher, a saddle for a locking member, a locking member consisting of a landing the heads with a fishing head, a ball and an elastic centralizer-parachute, on the elastic centralizer-parachute of the locking body, the same holes are made, removed at the same distance from its axis, and on the landing head a metal disk with holes located above the holes of the elastic centralizer-parachute is mounted above the elastic centralizer-parachute, and an additional disk is installed in the landing head coaxially with axial movement and with the possibility of closing the holes of the elastic centralizer-parachute, and in the cavity of the hollow body a hollow cylinder is installed under the additional disk, and on the outer side wall of the hollow cylinder there is a protrusion in the form of a washer located coaxially with this cylinder and at the lower the end of this cylinder. New in the proposed utility model is:

- on the elastic centralizer-parachute of the locking body made the same holes;

- the presence of a metal disk with holes;

- installation of an additional disk;

- installation of a hollow cylinder.

In FIG. 1 shows a General view of a device for crimping a string of tubing; in FIG. 2 - a longitudinal section of the crimping valve; in FIG. 3 - shutoff element of the pressure testing valve; in FIG. 4 is a longitudinal section of a catcher of a locking member.

A device for crimping a tubing string includes a hollow body 1 with connecting threads 2 at the ends, a flushing tee 3, a sleeve 4 with a support ring 5, a casing 6 of the catcher with a cap 7 and a catcher 8, a saddle 9 under the locking member 10. The saddle 9 is pressed to the annular protrusion 11 of the hollow body 1 with a threaded sleeve 12. The locking element 10 consists of a landing head 13 with a fishing head 14, a ball 15 and an elastic centralizer-parachute 16. On the elastic centralizer-parachute made the same holes 17, removed by the same distance melting from its axis. On the landing head 13 above the elastic centralizer-parachute mounted metal disk 18 with holes 19 located above the holes 17 of the elastic centralizer-parachute. In the landing head 13 coaxially with the possibility of axial movement and with the possibility of closing the holes 17 of the elastic centralizer-parachute, an additional disk 20 is installed. To ensure axial movement on the underside of the additional disk 20 there is a protrusion in the form of a sleeve 21. To close the holes 17 of the elastic centralizer - parachute after lifting up, the outer diameter of the additional disk 20 is selected slightly larger than the diameter D (Fig. 3) of the circle drawn at the extreme points of the holes 17. In the cavity of the hollow body 1 under tional drive 20 is mounted on the hollow cylinder 22. The outer side wall of the hollow cylinder 22, a protrusion 23 in the form of a washer located coaxially on the cylinder and the lower end of the cylinder. The flushing tee 3 is connected to the faceplate of the wellhead 24.

The casing 6 of the catcher is mounted on the flushing tee 3 using the coupling 4. In the casing 6 there is a housing 25 of the catcher 8 with a collet 26. For installing and removing the catch 8, the casing 25 is equipped with a fishing head 27. The support ring 5 is installed between the upper end part of the flushing tee 3 and body 25 catcher. This ring 5 holds the catcher 8 from moving down.

The device operates as follows: connected to a funnel or pen 28, the hollow body 1 with the locking member 10 installed in the saddle 9 is lowered into the well as part of the tubing string 29. Pressure testing of the tubing string is carried out with liquid. Debris: solid particles (construction sand, rubber from pump glands) present in liquids and solid oil deposits from the inner wall of tubing fall under their weight. They pass through the holes 17 and 19 of the elastic centralizer-parachute 16 and the metal disk 18 and are collected in the cavity between the opposite walls of the hollow cylinder 22 and the hollow body 1. After pressure testing, the pressure in the tubing string is reduced to atmospheric and the wellhead is closed with a faceplate 24 Then, the flushing tee 3 is screwed into the faceplate 24 with a pre-installed casing 6 and a catcher 8. The lateral branch of the tee is connected to the manifold line and the locking element 10 is started to be washed out of the column onto Ba tubing 29. For this liquid is fed into the annular space from which the liquid stream enters the bottom through a stylus or the funnel 28, the column of tubing 29 and acts from below on the ball 15 of the locking body 10, raising the closure member. After raising the locking element 10 by a small distance, the liquid flow lifts the additional disk 20. It rests on the lower wall of the elastic centralizer-parachute 16 and closes the holes 17 and 19 of the elastic centralizer-parachute 16 and the metal disk 18. Then, the liquid flow presses on the lower open parts additional disk 20 and an elastic centralizer-parachute 16. Under pressure of the fluid flow, the elastic centralizer-parachute 16 and the metal disk 18 rise up. With them along the column of tubing 29, the locking member 10 rises until the fishing head 14 is in contact with the catch 26 of the catch 8. The colleting 26 captures and securely holds the locking member 10 from moving down. After crimping the tubing string, if necessary, direct flushing or back flushing of the well can be carried out. In this case, the flushing fluid is discharged through the lateral branch of the flushing tee 3 into the oil collection line or flushing tank. After completion of work, the cover 7 of the casing 6 of the catcher 8 is turned away, after which the catcher 8 with the locking member 10 is removed.

The proposed device improves performance, tk. garbage moving downward during pressure testing of tubing accumulates under an elastic centralizer-parachute between the opposite walls of the hollow cylinder and the hollow body and does not prevent the locking element from moving upward. In the prototype, debris during pressure testing of tubing accumulates over an elastic centralizer-parachute and makes it difficult (slows down) to move the shut-off element upward by the flow of washing liquid.

List of information used: RF patent 61336 cl. IPC Е21В 33/12; RF patent No. 90477, IPC Е21В 17/00, publ. 01/10/2010

Claims (1)

A device for crimping a string of tubing in a well, comprising a hollow body with connecting threads at the ends, a flushing tee, a sleeve, a catcher casing with a cap and a catcher, a seat for a locking member, a locking member consisting of a landing head with a fishing head, a ball and elastic centralizer-parachute, characterized in that the elastic centralizer-parachute of the locking body has the same openings that are removed at the same distance from its axis, and on the landing head above the elastic a parachute center mounted metal disk with holes located above the holes of the elastic centralizer-parachute, and in the landing head coaxial to it, with the possibility of axial movement and with the possibility of closing the holes of the elastic centralizer-parachute, an additional disk is installed, and in the cavity of the hollow body under the additional disk a hollow cylinder is installed, and on the outer side wall of the hollow cylinder, a protrusion is made in the form of a washer located coaxially with this cylinder and at the lower end of this cylinder but.

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