CN217925799U

CN217925799U - Bidirectional metal sealing ring assembly of oil pipe hanger body

Info

Publication number: CN217925799U
Application number: CN202222408916.3U
Authority: CN
Inventors: 陈鹏; 刘文鑫
Original assignee: Shanghai Wanfeng Heavy Industry Co ltd
Current assignee: Shanghai Wanfeng Heavy Industry Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-11-29
Anticipated expiration: 2032-09-07

Abstract

The utility model belongs to the field of oil pipe hanger sealing, in particular to a bidirectional metal sealing ring assembly of an oil pipe hanger body, which comprises an oil pipe hanger with a hollow interior, wherein an upper joint and a lower joint are respectively arranged at two ends of the oil pipe hanger, and a convex positioning column is formed at one end of the oil pipe hanger close to the lower joint; the supporting platform at the lower part is supported by an external oil pipe head, and in the process of pressing down the oil pipe hanger, under the action of gravity, the positioning column is inserted into a positioning groove formed in the lower supporting platform to perform internal fixation.

Description

Bidirectional metal sealing ring assembly of oil pipe hanger body

Technical Field

The utility model relates to a tubing hanger sealing field, concretely relates to two-way metal seal circle assembly of tubing hanger body.

Background

The oil pipe hanger is a device for supporting the oil pipe column and sealing the annular space between the oil pipe and the casing, and the sealing mode of the oil pipe hanger is that the oil pipe hanger is connected with the oil pipe and is seated in the oil pipe head by utilizing the gravity of the oil pipe for sealing, so that the operation is convenient, the well head changing speed is high, and the well head is safe, so that the oil pipe hanger is a mode commonly used by medium-deep wells and conventional wells, and the oil pipe hanger is positioned in the oil pipe head.

The prior art has the following problems:

when the joint of the oil pipe hanger and the oil pipe head is sealed, a jackscrew or a bolt is needed to be used for activating the sealing structure, a plurality of through hole-opening structures are arranged among the oil pipe hanger, the sealing structure and the oil pipe head to assist sealing, and when the sealing structure is actually installed, the problem of inconvenient hole-opening positioning exists, so that the sealing efficiency is low.

SUMMERY OF THE UTILITY MODEL

Objects of the first utility model

For solving the technical problem that exists among the background art, the utility model provides a two-way metal seal circle assembly of tubing hanger body has tubing hanger two-way seal, need not to set up with the trompil of tubing head looks adaptation to hanger and seal structure and seal the characteristics that the activation was sealed with supplementary jackscrew or bolt.

(II) technical scheme

In order to solve the technical problem, the utility model provides a bidirectional metal sealing ring assembly of an oil pipe hanger body, which comprises an oil pipe hanger with a hollow interior, wherein an upper joint and a lower joint are respectively arranged at two ends of the oil pipe hanger, and a convex positioning column is formed at one end of the oil pipe hanger close to the lower joint;

the lower sealing mechanism comprises a lower support platform arranged at the lower joint, a positioning groove matched with the positioning column is formed in the bottom of the lower support platform, a lower sealing steel ring is placed in a gap between the lower support platform and the oil pipe hanger, and a plurality of lower gaskets connected with each other are arranged in an interlayer between the lower sealing steel ring and the oil pipe hanger in an array manner;

the upper sealing mechanism comprises an upper support platform arranged at the upper joint, an upper sealing steel ring is placed in a gap between the upper support platform and the oil pipe hanger, and a plurality of upper gaskets connected with each other are arranged in an interlayer between the upper sealing steel ring and the oil pipe hanger in an array manner;

the locking mechanism comprises a column groove formed in the upper surface of the lower gasket and a convex column formed at the bottom of the upper gasket, and the convex column and the column groove are fixedly inserted.

Preferably, the lower sealing steel ring is of an L-shaped structure, and the protruding end is attached to the outer wall of the lower support.

Preferably, the upper sealing steel ring is of an inverted L-shaped structure, and grooves matched with each other are formed in the contact position of the upper sealing steel ring and the upper supporting platform.

Preferably, the specification of a section of outer wall of the upper sealing steel ring protruding out of the upper supporting table is the same as that of the outer wall of the upper supporting table.

Preferably, the lower gasket and the upper gasket are identical in structure and are tying belts drawn by four ring pieces in a matching mode.

Preferably, the middle section of the convex column is provided with a middle bearing ring, and the spring pieces are arranged in the groove of the middle bearing ring in an array mode.

The above technical scheme of the utility model has following profitable technological effect: the lower tray is supported by an external tubing head, and in the process of pressing down the tubing hanger, under the action of gravity, a positioning column is inserted into a positioning groove formed in the lower tray to perform internal fixation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic structural diagram of the locking mechanism of the present invention.

Reference numerals are as follows:

1. a tubing hanger; 11. an upper joint; 12. a lower joint; 13. a positioning column; 21. a lower saddle; 22. positioning a groove; 23. a lower sealing steel ring; 24. a lower gasket; 31. a mounting table; 32. an upper sealing steel ring; 33. an upper gasket; 41. a convex column; 42. a middle bearing ring; 43. a column groove; 5. a spring member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in combination with the following embodiments. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-3, the bidirectional metal seal ring assembly for the oil pipe hanger body provided by the present invention comprises an oil pipe hanger 1 with a hollow interior, wherein an upper joint 11 and a lower joint 12 are respectively installed at two ends of the oil pipe hanger 1, and a protruding positioning column 13 is formed at one end of the oil pipe hanger 1 close to the lower joint 12;

the lower sealing mechanism comprises a lower supporting platform 21 arranged at the lower joint 12, a positioning groove 22 matched with the positioning column 13 is formed in the bottom of the lower supporting platform 21, a lower sealing steel ring 23 is placed in a gap between the lower supporting platform 21 and the oil pipe hanger 1, and a plurality of lower gaskets 24 connected with each other are arranged in an interlayer between the lower sealing steel ring 23 and the oil pipe hanger 1 in an array manner;

the upper sealing mechanism comprises an upper saddle 31 arranged at the upper joint 11, an upper sealing steel ring 32 is placed in a gap between the upper saddle 31 and the oil pipe hanger 1, and a plurality of upper gaskets 33 connected with each other are arranged in an interlayer between the upper sealing steel ring 32 and the oil pipe hanger 1 in an array manner;

the locking mechanism comprises a column groove 43 arranged on the upper surface of the lower gasket 24 and a convex column 41 formed at the bottom of the upper gasket 33, and the convex column 41 and the column groove 43 are inserted and fixed.

It should be noted that:

1. the lower sealing steel ring 23 is of an L-shaped structure, the lower gasket 23 is attached to the inner wall of the lower support platform 21 under the action of gravity in the axial direction, is clamped by the outer wall of the oil pipe hanger 1 and the inner wall of the lower support platform 21 in a two-way mode in the radial direction, and is pre-sealed at the lower portion through the lower sealing steel ring 23.

2. The upper sealing steel ring 32 is of an inverted L-shaped structure, grooves matched with each other are formed in the contact position of the upper sealing steel ring 32 and the upper supporting platform 31, the upper sealing steel ring 32 falls under the gravity, the grooves are designed to be of matched structures, the falling gravity is balanced in a hanging mode, the radial direction of the upper sealing steel ring is clamped by the outer wall of the oil pipe hanger 1 and the inner wall of the lower supporting platform 21 in a bidirectional mode, and the lower part of the upper sealing steel ring 32 is pre-sealed.

3. The protruding end of the lower sealing steel ring 23 is attached to the outer wall of the lower support table 21, the outer wall of a section of the upper sealing steel ring 32 protruding out of the upper support table 31 is the same as the outer wall of the upper support table 31 in specification, the interface between the outer walls of the lower sealing steel ring and the upper support table is smooth, and the annular cavity is attached to the position of the annular cavity clamped by the upper portion and the lower portion of the oil pipe head.

In this embodiment, the lower tray 21 is supported by an external tubing head, and in the process of pressing down the tubing hanger 1, under the action of gravity, the positioning column 13 is inserted into the positioning groove 22 formed in the lower tray 21 for internal fixation, and because the lower gasket 24 and the upper gasket 33 are arranged in the clamping gap between the lower sealing steel ring 23 and the upper sealing steel ring 32 and the tubing hanger 1, in the process of approaching the lower sealing steel ring and the upper sealing steel ring, the locking mechanism works, and the convex column 41 on the upper gasket 33 is inserted into the corresponding column groove 43 formed in the lower gasket 24 for internal locking of the upper and lower sealing mechanisms, so as to surround and seal the middle section of the tubing hanger 1, and no external jackscrew or bolt structure is needed to assist in activating the sealing part.

What needs to be supplemented is: the lower gasket 24 and the upper gasket 33 have the same structure and are tying belts drawn by matching four ring pieces, and the non-ring-shaped gasket is adopted, so that radial stress can be equally divided in four directions of front, back, left and right in an intermittent design, and the non-ring-shaped gasket is different from the ring piece design in that stress is uneven at all points of front, back, left and right.

In another embodiment, a middle bearing ring 42 is installed in the middle section of the convex column 41, spring elements 5 are installed in the grooves of the middle bearing ring 42 in an array mode, the other ends of the spring elements 5 are in contact with an external oil pipe head, under the thrust action of spring resetting, the thrust direction is radial and perpendicular to the inner wall of the oil pipe head, and under the reaction force, the oil pipe hanger 1 and the middle section of the oil pipe head are reinforced.

It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The bidirectional metal sealing ring assembly of the oil pipe hanger body is characterized by comprising an oil pipe hanger (1) with a hollow interior, wherein an upper joint (11) and a lower joint (12) are respectively installed at two ends of the oil pipe hanger (1), and a protruding positioning column (13) is formed at one end, close to the lower joint (12), of the oil pipe hanger (1);

the lower sealing mechanism comprises a lower supporting platform (21) arranged at the lower joint (12), a positioning groove (22) matched with the positioning column (13) is formed in the bottom of the lower supporting platform (21), a lower sealing steel ring (23) is placed in a gap between the lower supporting platform (21) and the oil pipe hanger (1), and a plurality of lower gaskets (24) connected with each other are arranged in an interlayer between the lower sealing steel ring (23) and the oil pipe hanger (1) in an array mode;

the upper sealing mechanism comprises an upper supporting platform (31) arranged at the upper joint (11), an upper sealing steel ring (32) is placed in a gap between the upper supporting platform (31) and the oil pipe hanger (1), and a plurality of upper gaskets (33) which are connected are arranged in an interlayer array between the upper sealing steel ring (32) and the oil pipe hanger (1);

the locking mechanism comprises a column groove (43) formed in the upper surface of the lower gasket (24) and a convex column (41) formed at the bottom of the upper gasket (33), and the convex column (41) and the column groove (43) are fixedly inserted.

2. The oil pipe hanger body bidirectional metal seal ring assembly as claimed in claim 1, wherein the lower seal steel ring (23) is of an "L-shaped" structure, and the protruding end is attached to the outer wall of the lower saddle (21).

3. The oil pipe hanger body bidirectional metal sealing ring assembly as claimed in claim 1, wherein the upper sealing steel ring (32) is of an inverted L-shaped structure, and the contact position of the upper sealing steel ring (32) and the upper saddle (31) is provided with grooves matched with each other.

4. The oil pipe hanger body bidirectional metal seal ring assembly as claimed in claim 3, wherein a section of outer wall of the upper seal steel ring (32) protruding out of the upper saddle (31) is the same as the outer wall of the upper saddle (31).

5. The oil pipe hanger body bidirectional metal seal ring assembly according to claim 1, wherein the lower gasket (24) and the upper gasket (33) have the same structure, and are respectively a lacing pulled by matching four ring pieces.

6. The oil pipe hanger body bidirectional metal seal ring assembly as claimed in claim 1, wherein a middle socket ring (42) is installed at the middle section of the convex column (41), and spring members (5) are installed in the grooves of the middle socket ring (42) in an array manner.