RU2763942C1 - Tool for installing pipes in a column - Google Patents

Abstract

FIELD: engineering.

SUBSTANCE: invention relates to a tool for installing pipes in a column. The tool comprises a tool body made in the form of a body of rotation, a core, fastener rods with fasteners at the ends, pins. The core is installed in the body, configured rotation relative thereto. The fastener rods with fasteners at the ends are located in the body, configured to be radially extended from the body by interacting with the conical surface of the driving nut configured to move along the core thread during rotation thereof relative to the body. The rods and fasteners are located along the circumference of the body, configured to be extended from the body and secure the tool in the matching slots on the inner surface of the pipe column. The pins are installed in the body, configured to interact with the slots at the end of the pipe column and limit the rotation of the body around the axis. Orientation of the tool along the axis of the pipe column occurs due to the interaction of the sleeve installed on the groove in the body of the tool.

EFFECT: metal consumption of the tool structure is reduced, resource of use thereof is increased.

3 cl, 3 dwg

Description

Technical field

The invention relates to the oil and gas industry and can be used for technological work in an underwater well.

Prior Art

From the existing prior art, a tool is known for installing a pipe string guiding into a well on the shelf (options) (RF patent No. 2708425, publ. from a guide with an emphasis and a prefabricated body.

Known tripping downhole tool and a method of carrying out technological work in an underwater well named after them (RF patent No. 2717004, publ. 03/17/2020), having a guide on which a body is placed, made with holes for air release, a nut with a ledge, a valve, an emphasis , limiting the axial movement of the valve along the guide, spring-loaded fingers that can interact with the protective sleeve and are fixed by the sleeve, shear screws, fingers that can interact with the nut and the conductor, and spring-loaded fingers that can interact with the conductor.

A common disadvantage of these technical solutions is the increased metal consumption of the tool body, which, taking into account the high cost of the metal from which tool parts are made, reduces the overall efficiency of using the tool.

The essence of the invention

The problem solved by the present invention is the problem of improving the efficiency of tool use.

The technical result is a reduction in the metal consumption of the tool design for installation in a pipe string, an increase in the service life of the tool, and a reduction in operating costs.

The technical result is achieved by the fact that the tool body is prefabricated, with a sleeve that provides orientation of the tool when installing the tool in a pipe string, the tool body has a recess that reduces the metal consumption of the tool, limiting the movement of the core in the axial direction due to the fact that there is a thrust bushing, placed one end in the body of the thrust bushing, the other in the groove on the core.

Brief description of the drawings

Further in the description, a possible, but the only version of the tool for installation in a pipe string is given.

The essence of the invention is illustrated by drawings.

In FIG. 1 shows a general view of a tool for installation in a pipe string.

In FIG. 2 shows a view of the tubing string tool placed in the tubing string.

In FIG. 3 shows a tool for installing a direction pipe string into a well on the shelf (RF patent No. 2708425, publ. 12/06/2019).

Detailed description of the invention

The tool is part of the tool kit for the system of subsea casing heads and is designed for lowering / raising and installing a pipe string in the ground, for example, a direction string or a conductor string.

In FIG. 1 shows a general view of a tool for installation in a pipe string.

The tool consists of:

1 - guide sleeve;

2 - thrust bushing body;

3 - thrust bushing;

4, 13 - bolt;

5, 32 - lock rods;

6, 10 - finger;

11, 31 - clamps

7 - bushing;

8 - core;

9 - running nut,

12 - body,

14 - notch;

15 - branch pipe,

16 - pipe string.

In the claimed technical solution, the size of the body 12 along the axis of rotation of the part is reduced by about 30 percent compared to analogues, the orientation of the tool is provided by the guide sleeve 1 installed on the groove in the body 12. The core 8 is located in the body 12 and is fixed by the thrust bushing 3 and the thrust bushing body 2 The sleeve 7 is a restrictive element for the movement of the running nut 9. The thrust sleeve 3 is located in the body of the thrust sleeve 2, which in turn is attached to the body 12 by means of bolts 4, 13. Pins 6 and 10 interacting with the grooves made at the end of the pipe string 16 , limit the possibility of rotation of the body 12 around the axis of rotation when installing the tool in the pipe string 16. The clamps 11, 31 are attached to the lock rods 5, 32 and have shaped grooves for interacting with the reciprocal shaped grooves in the pipe string 16, the other end of the lock rods 5, 32 interact with the conical surface of the running nut 9, which has the possibility of a linear shift displacement along the axis of rotation of the tool when turning the core 8. The shaped grooves of the clamps 11, 31 abut against the grooves of the pipe string 16 and, located around the circumference, ensure the reliability of fixing the tool in the pipe string during technological operations.

The branch pipe 15 serves to lengthen the core 8, has a central hole for the supply of reagents and cement during routine maintenance. The body 12 has a recess 14 to facilitate the part.

The tool works like this - when the tool is lowered into the pipe string 16, the body 12 (Figure 2) is oriented along the axis of the pipe string 16 due to the interaction of the outer diameters of the body 12 and the guide sleeve 1 with the mating surfaces of the pipe string 16. Stops 6 and 10 are installed in grooves on at the end of the pipe string 16. When the core 8 is rotated for several revolutions, the running nut 9 moves along the axis of the tool, the conical surface of the running nut 9 interacts with the rods of the clamps 5, 32 and moves the clamps 11, 31 in the radial direction, while the curly grooves on the clamps 11 and 31 interact with the reciprocal shaped grooves on the contact part of the pipe string 16, due to which the tool is fixed on the pipe string 16. After that, it becomes possible to carry out technological procedures, for example, lowering and installing the pipe string into the ground, cementing. The internal cavities of the tool are filled with oil.

In FIG. 2 shows a view of a tool for installation in a directional pipe string.

When installing the tool in the pipe string 16, the tool is oriented along the axis of the pipe string 16 due to the interaction of the outer diameter of the body 12 with the mating surfaces of the pipe string 16, while the guide sleeve 1 protects the surfaces of the string body 16 from cement and sludge during technological operations. Pins 6 and 10 are located in the grooves at the end of the pipe string 16, limiting the tool from turning. Clamps 11 and 32 interact with reciprocal shaped grooves on the body of the pipe string 16, fixing the tool in the pipe string 16.

To perform tripping and retrieval, the tool is attached to the drill pipes using a socket thread on the core 8.

Branch pipe 15 is intended for supply of technological liquids and cement.

When using the tool, the tool is lowered and placed in the head of the pipe string 16 so that the fingers 6, 10 installed on the tool are placed in the grooves on the drill head of the pipe string 16, then the tool is fixed by turning the core 8. Turning the core 8 causes movement running nuts 9 along the axis of rotation of the tool, the conical surface of the running nut acts on the rods of the retainers 5 and 32, causing them to move radially, while the curly grooves of the clamps 11 and 31 interact with the reciprocal curly grooves on the contact part of the pipe string 16, fixing the tool. After that, you can perform the technological operation.

In FIG. 3 shows a tool for installing a direction pipe string into a well on the shelf (RF patent No. 2708425, publ. 12/06/2019).

17 - core;

18 - thrust flange;

19 - body;

20, 26 - finger;

21, 25 - groove;

22, 24 - emphasis;

23 - running nut;

27 - larger case diameter;

28 – smaller case diameter;

29 - pipe string;

30 - branch pipe.

In the technical solution according to the patent of the Russian Federation No. 2708425 (publ. 06.12.2019), the body 19 is a solid massive part having two guiding outer surfaces 27 (larger body diameter) and 28 (smaller body diameter), which, when the tool is installed in the pipe string 29 interact with the surfaces of the mating parts and orient the tool along the axis of the pipe string 29. The core 17 is located in the body 19. The axial movement of the body 19 is limited on the one hand by the thrust flange 18 and the running nut 23 on the other. The tool works like this - when the tool is lowered into the pipe string 29, the body 19 is oriented along the axis of the pipe string 29 due to the interaction of outer diameters 27 (larger body diameter) and 28 (smaller body diameter) with counter parts of the pipe string. The stops 22 and 24 are installed in the grooves 21 and 25 located at the end of the pipe string 29. When the core 17 is rotated for several turns, the running nut 23 moves along the axis of the tool, the conical surface of the running nut 23 interacts with the fingers 20 and 26, setting them in motion in in the radial direction, while the shaped grooves at the ends of the fingers 20 and 26 interact with the reciprocal shaped grooves on the contact part of the pipe string 29, due to which the tool is fixed on the pipe string 29. After that, it becomes possible to carry out various technological procedures, for example, cementing.

Unlike the technical solution presented in the patent of the Russian Federation No. 2708425 (published on 06.12.2019), in the claimed technical solution, the body of the tool is not made of all-metal as in patent No. allowing to orient the tool along the axis of the pipe string 16, is installed on the groove on the body 12, the body 12 has a recess 14, which facilitates the part, the core 8 is limited from moving along the axis of the tool by the thrust bushing 3, located in the recess 14 in the body of the thrust bushing 2, which in its the turn is attached to the body 12, all this allows to achieve the technical result, which consists in reducing the metal consumption of the design of the tool for installation in the pipe string.

Keeping the core from moving in the axial direction by a thrust bushing located in the thrust bushing body makes it possible to reduce the load in the threaded connection of the running nut and the core, which in turn allows to increase the service life of the tool and reduce operating costs.

Claims (3)

1. A tool for installation in a pipe string, containing a tool body made in the form of a body of rotation, a core installed in the body with the possibility of rotation relative to it, lock rods with locks at the ends located in the body with the possibility of radial extension from the body by interacting with a conical the surface of the running nut, which is configured to move along the thread of the core when it rotates relative to the body, while the rods and clamps are located around the circumference of the body with the possibility of extension from the body and fixing the tool in reciprocal grooves on the inner surface of the pipe string, fingers installed in the body with the possibility of interacting with the grooves at the end of the pipe string and limiting the rotation of the body around the axis, characterized in that the orientation of the tool along the axis of the pipe string occurs due to the interaction of the sleeve installed on the groove in the tool body. 2. A tool for installation in a pipe string according to claim 1, characterized in that the tool body has a recess at the end. 3. A tool for installation in a pipe string according to claim 1, characterized in that the core is kept from moving in the axial direction by a thrust sleeve, one end interacting with the groove on the core, the other with the sleeve body, while the sleeve body is attached to the tool body.

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