RU2720049C1 - Manifolds pipelines attachment mechanism in wellhead equipment - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and is used as a mechanism for back-to-back connection of pipelines of two manifolds in wellhead equipment. Proposed mechanism comprises case and collet with half-coupling. Proposed mechanism comprises resilient bush with annular section made as split and capable of transferring force to bush for its closing. Bushing contains a limiting ring from longitudinal displacement limiting movement in longitudinal direction of half-coupling relative to the case. Ring is made with a key limiting axial movement of the half-coupling relative to the body. Sleeve comprises pins with outer surface. Pins are connected with limiting ring from radial movement and with step-bearings, limiting together radial movement of bushing. Bushing is installed in the assembled body with the possibility of movement in the axial direction. Housing comprises: outer housing, adjusting ring with screws in its radial holes, flange and shell, joined by connecting screw. In the shell guide bushing is installed. Shell can move along body and sleeve. Movement of the entire body is limited by the sleeve and body. Displacement of the bush in extreme left position ensures bushing closing and creation of conditions for reliable connection. At that, screws in ring holes have the possibility of displacement and thus regulation of bush stress state degree, providing its contraction.

EFFECT: enabling adjustment without disassembling the structure and high reliability of the mechanism.

1 cl, 4 dwg

Description

The invention relates to the oil and gas industry and is used as a mechanism for the oncoming connection of pipelines of two manifolds in the wellhead equipment.

Known installations with equipment, including manifolds as a high-pressure fountain, for the construction, operation and repair of subsea wells, RU No. 2632085 C2, ЕВВ 43/017, ЕВВ 33/035, 10/02/2017; RU No. 2606471 C1, ЕВВ 34/02, F16K 15/04, 01/10/2017; RU No. 2577345 C2, Е21В 21/08, 03/20/2016; RU No. 2567934 C1, ЕВВ 43/01, 11/10/2015; RU No. 2191888 C2, Е21В 43/013; ЕВВ 33/035, 10.27.2002; RU No. 2168614 C1, ЕВВ 43/00, 06/10/2001.

A known manifold assembly for connecting pumping units to the wellhead, comprising a main line configured to connect to the wellhead and containing outlet connecting pipes, articulated bends layouts, each of which is connected to a corresponding outlet connecting pipe, articulated pipeline arrangement and the swivel of the rack, while using the manifold, each arrangement of articulated branches is connected to the corresponding pump unit and the main Iniya is connected to the wellhead, thereby connecting the pumping units to the wellhead, RU No. 2629182 C2, ЕВВ 21/10, Е21В 43/267, 08/25/2017; RU No. 2572878 C2, Е21В 21/10, Е21В 43/267, 01.20.2016.

Known auxiliary device for production manifold, made in the form of a base with the ability to connect to the production manifold connecting jumpers from the corresponding underwater wellhead fittings, RU No. 2540739 C2, ЕВВ 43/017, 02/10/2015.

In the known devices, features identical to the claimed invention were not found.

The closest analogue to the claimed invention is not found.

The present invention is based on the solution of the problem, which allows to ensure reliable execution of the manifold piping by the connection mechanism, to improve the structural design of the mechanism, to increase its technological and operational capabilities.

The technical result of the present invention is to rigidly fix and prevent jamming of structural elements when connecting pipelines by performing an elastic sleeve with an annular cross-sectional section and with the possibility of transferring force to the collet sleeve to close it, to provide the ability to move and limit the movement of structural elements of the collet and elastic bushings due to their constructive implementation, in carrying out adjustment work (adjustment) without disassembling the structure and in shenii safety and reliability during operation.

According to the invention, the mechanism for connecting manifold pipelines as part of the wellhead equipment includes a housing and a collet sleeve with a coupling half.

The mechanism contains an elastic sleeve with an annular cross section.

The elastic sleeve with an annular cross-section is made split and has the ability to perform the function of transferring force to the collet sleeve to close it.

In this case, the collet sleeve contains a restrictive ring from longitudinal movement, restricting the movement in the longitudinal direction of the coupling half relative to the housing.

The restrictive ring from the longitudinal movement is made with a key that restricts the axial movement of the coupling half relative to the housing.

The collet sleeve contains fingers with an outer surface.

The fingers are connected to the restrictive ring from radial movement and to the thrust bearings, which together limit the radial movement of the collet sleeve.

An elastic split sleeve with an annular cross section is mounted in a prefabricated housing with the possibility of movement in the axial direction.

The prefabricated housing includes: an external housing, an adjusting ring with screws in its radially directed holes, a flange and a glass.

The outer casing, the adjusting ring, the flange and the cup are connected by a connecting screw.

And in the glass, a guide sleeve is installed.

The glass has the ability to move around the body and the guide sleeve.

The movement of the entire composition of the precast housing is limited by the guide sleeve and the housing.

And the movement of the elastic split sleeve with an annular cross-section in the extreme right position is carried out on the outer surface of the fingers of the collet sleeve.

And the movement of the elastic split sleeve with an annular cross-section to the leftmost position ensures the closure of the collet sleeve and the creation of conditions for reliable connection.

In this case, the screws in the radially directed holes of the adjusting ring have the ability to move and thereby control the degree of stress of the elastic split sleeve with an annular cross section, ensuring its compression.

The applicant has not identified sources containing information on technical solutions identical to the present invention, which allows us to conclude that it meets the criterion of "novelty."

Due to the implementation of the distinguishing features of the invention (in conjunction with the features indicated in the restrictive part of the formula), important new properties of the object are achieved.

The implementation of an elastic sleeve with an annular cross-sectional section and with the possibility of transferring force to the collet sleeve for its closure guarantees the convenience of adjusting its preload when moving the adjusting ring screws in the radial direction, which ensures reliable execution of the piping attachment mechanism with rigid fixation and preventing jamming of structural elements.

The implementation of the collet sleeve with a restrictive ring from longitudinal movement with a key, each of which limit, respectively, the movement in the longitudinal and axial direction of the coupling half relative to the housing, the connection of the fingers with the restrictive ring from radial movement and with thrust bearings, which together limit the radial movement of the collet sleeve, and installation of an elastic split sleeve with an annular cross-section in a prefabricated housing, which allows to improve the structural design of the mechanism and to ensure possible Both displacements and limitations of displacements of structural elements of the collet sleeve and elastic split sleeve with an annular section.

The holes in the flange housing provide access to the screws of the adjusting ring, allowing you to adjust the extension of these screws, and the execution of the elastic split sleeve allows you to carry out, if necessary, technological operations without disassembling the structure, which increases the technological and operational capabilities of the mechanism.

The applicant is not aware of any publications that would contain information on the influence of the distinguishing features of the invention on the achieved technical result. In this regard, according to the applicant, it can be concluded that the claimed technical solution meets the criterion of "inventive step".

The invention is illustrated by drawings, which depict:

FIG. 1 - “The mechanism for connecting manifold pipelines as part of the wellhead equipment”, General view of the fixed position of the collet sleeve with an elastic split sleeve with an annular cross-section in the leftmost position;

FIG. 2 - “The connection mechanism of manifold pipelines as part of the wellhead equipment”, General view of the opening of the collet sleeve, the movement of the elastic split sleeve with an annular cross-section to the extreme right position;

FIG. 3 - “The connection mechanism of manifold pipelines as part of the wellhead equipment”, Section AA in FIG. 1;

FIG. 4 - “The mechanism for connecting manifold pipelines as part of wellhead equipment”, Axonometry.

In FIG. 1-4 depicted:

Collet sleeve - 1.

The coupling half (for installing the sleeve 1, limits the longitudinal movement of the sleeve 1) - 2.

Housing (bushings 1) - 3.

Fingers (bushings 1) - 4,

outer surface (fingers 4) - 5,

a restrictive ring from longitudinal movement (limits the movement in the longitudinal direction of the coupling half relative to the housing 3) -6,

dowel (on the ring 6, limits the axial movement of the floor of the coupling 2 relative to the housing 3) - 7.

The restrictive ring from radial movement (limits the radial movement of the sleeve 1 and is connected to the fingers 4) - 8.

The thrust bearings (limit the radial movement of the sleeve 1 and are connected to the fingers 4) - 9.

Elastic split sleeve with an annular section - 10.

The prefabricated housing (for the sleeve 10, moves the sleeve 10 in the axial direction) - 11.

Outer casing (casing 11) - 12.

An adjusting ring with radially directed openings (cases 11) - 13,

screws (in the holes of the ring 13, regulating the degree of stress of the sleeve 10 and ensuring reliable connections) -14.

Flange (body 11) - 15.

Glass (building 11) - 16.

Connecting screw (for housing 12, ring 13, flange 15, cup 16) - 17.

Guide sleeve (to move cup 16) - 18.

The mechanism for connecting manifold pipelines as part of the wellhead equipment includes a housing 3 and a collet sleeve 1 with a coupling half 2.

The mechanism comprises an elastic sleeve 10 with an annular cross section.

The elastic sleeve 10 with an annular cross-section is made split and has the ability to perform the function of transferring force to the collet sleeve 1 to close it.

When this collet sleeve 1 contains a restrictive ring from the longitudinal movement 6, restricting the movement in the longitudinal direction of the coupling 2 relative to the housing 3.

The restrictive ring from the longitudinal displacement 6 is made with a key 7 restricting the axial movement of the coupling half 2 relative to the housing 3.

The collet sleeve 1 comprises pins 4 with an outer surface 5.

The fingers 4 are connected to the restrictive ring from the radial movement 8 and to the thrust bearings 9, which together limit the radial movement of the collet sleeve 1.

An elastic split sleeve with an annular cross-section 10 is installed in the precast housing 11 with the possibility of movement in the axial direction.

The prefabricated housing 11 includes: an external housing 12, an adjusting ring 13 with screws 14 in its radially directed holes, a flange 15 and a glass 16.

The outer casing 12, the adjusting ring 13, the flange 15 and the glass 16 are combined by a connecting screw 17.

And in the glass 16 has a guide sleeve 18.

The glass 16 has the ability to move along the housing 3 and the guide sleeve 18.

The movement of the entire composition of the precast housing 11 is limited by the guide sleeve 18 and the housing 3.

And the movement of the elastic split sleeve with an annular cross section 10 in the extreme right position is carried out on the outer surface of 5 fingers 4 of the collet sleeve 1.

And the movement of the elastic split sleeve with an annular cross-section 10 in the extreme left position ensures the closure of the collet sleeve 1 and the creation of conditions for reliable connection.

In this case, the screws 14 in the radially directed holes of the adjusting ring 13 have the ability to move and thereby control the degree of stress of the elastic split sleeve with an annular cross section 10, ensuring its compression.

Connection piping manifolds are as follows.

The elastic fixing of the collet sleeve 1 is carried out by an elastic split sleeve with an annular cross-section 10.

The elastic split sleeve with an annular cross-section 10 performs the function of transmitting force to the collet sleeve 1.

When moving the elastic split sleeve with an annular cross-section 10 to the leftmost position (Fig. 1), the collet sleeve 1 is closed and conditions are created for connecting the pipelines.

The collet sleeve 1 is mounted on the coupling half 2, the geometry of which limits the longitudinal movement of the collet sleeve 1.

The movement in the longitudinal direction of the coupling half relative to the housing 3 is limited by a restrictive ring from the longitudinal movement 6.

The axial movement of the coupling half relative to the housing 3 is limited by the key 7 of the restrictive ring from the longitudinal movement 6.

The radial movement of the collet sleeve 1 is limited by a restrictive ring from the radial movement 8 and thrust bearings 9, which are connected to the fingers 4 of the collet sleeve 1.

The axial movement of the elastic split sleeve with an annular cross-section 10 is carried out by a prefabricated housing 11, the composition of which is combined by a connected screw 17 and which is limited by the guide sleeve 18 and the housing 3.

Between the housing 3 and the flange 15 of the housing 11 is placed the adjusting ring 13, in the radially directed holes, which are installed screws 14 (Fig. 3).

Screws 14 by their movement regulate the degree of stress state of an elastic split sleeve with an annular cross-section 10, which ensures reliable connection of pipelines.

The movement of the elastic split sleeve with an annular cross-section 10 to the extreme right position (Fig. 2) occurs along the surface of the fingers 4 of the collet sleeve 1, the geometry of which, together with the geometry of the coupling half 2, enables the disclosure of the collet connection.

To replace an elastic split sleeve with an annular cross-section 10, if necessary, it is enough to dismantle the connecting screw 17 and the outer casing 12 of the assembled housing 11, unscrew the screws 14 in the released adjusting ring 13 and thereby weaken the tension of the elastic split sleeve with an annular cross-section 10. Change the degree its voltage is possible without disassembling the mechanism by adjusting the extension of the screws 14 through the technological holes in the outer casing 12.

The proposed technical solution "The mechanism for connecting manifold pipelines as part of the wellhead equipment" can be manufactured industrially, which is confirmed by the design and technological studies of the main structural units, and testing of prototypes, studying and substantiating the operating modes of the proposed technical solution determines, according to the applicant, compliance with its criterion of "industrial applicability".

The proposed technical solution allows:

- to ensure reliable execution by the connection mechanism of manifold pipelines;

- improve the constructive implementation of the mechanism;

- increase the operational capabilities of the mechanism;

- increase the technological capabilities of the mechanism.

Claims (1)

The mechanism for connecting manifold pipelines as part of the wellhead equipment, including a housing, a collet sleeve with a half coupling, characterized in that the mechanism comprises an elastic sleeve with an annular cross section, made split and having the ability to perform the function of transferring force to the collet sleeve to close it, while the collet sleeve contains restrictive ring against longitudinal displacement, limiting displacement in the longitudinal direction of the coupling half relative to the housing, with a key restricting the displacement axial direction of the coupling half relative to the housing, and fingers with an outer surface connected to the restrictive ring from radial movement and with thrust bearings that together limit the radial movement of the collet sleeve, and an elastic split sleeve with an annular section is mounted in the precast housing with axial movement moreover, the prefabricated housing includes: an external housing, an adjusting ring with screws in its radially directed holes, a flange and a glass, and externally The housing, the adjusting ring, the flange and the cup are connected by a connecting screw, and a guide sleeve is installed in the cup, and it has the ability to move along the body and the guide bush, and the movement of the entire assembly of the assembled housing is limited by the guide bush and the housing, and the movement of the elastic split sleeve with the ring section to the rightmost position is carried out on the outer surface of the fingers of the collet sleeve, and the movement of the elastic split sleeve with an annular section to the leftmost position provides closing the collet sleeve and creating conditions for reliable connection, while the screws in the radially directed holes of the adjusting ring have the ability to move and thereby control the degree of stress of the elastic split sleeve with an annular cross section, ensuring its compression.

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