Quickly-assembled wellhead device

Abstract

The utility model belongs to the technical field of well head devices, and discloses a fast-assembly type well head device which comprises a well head seat and a Christmas tree, a communication groove is formed in the center of the well head seat, a first flange is installed at the position, located on the peripheral side of the communication groove, of the well head seat, and four positioning grooves are formed in the four corners of the top end of the well head seat. A second flange is mounted at the bottom end of the Christmas tree, a mounting base is mounted at the position, located on the peripheral side of the second flange, of the bottom end of the Christmas tree, first sliding grooves are formed in the positions, matched with the four positioning grooves, of the bottom end of the mounting base, first trapezoidal blocks are slidably mounted in the first sliding grooves, and a plurality of first compression springs are mounted at the top ends of the first trapezoidal blocks; the other end of the first compression spring is connected with the top end of the first sliding groove. According to the device, the wellhead device can be quickly positioned, mounted or dismounted, meanwhile, the wellhead device can be isolated and protected during use, the working efficiency during mounting and dismounting of the wellhead device is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of wellhead devices, and more specifically, particularly relates to a quick-install wellhead device. Background Art

[0002] Wellhead equipment refers to the Christmas tree, tubing head, casing head and related accessories, which are oil (gas) production equipment used for suspension, support, control, and adjustment. As an important equipment for oil and gas production, the quality of its performance is related to whether the oil and gas wells can produce safely and efficiently.

[0003] Christmas trees require maintenance after long-term use. Some of the current wellhead devices are usually fixed on the wellhead. Since the Christmas trees are heavy, it is troublesome to disassemble and maintain them. Workers are required to frequently adjust the position of the Christmas trees, which affects maintenance efficiency. In addition, some of the current Christmas trees are directly installed near the wellhead and lack isolation and protection measures. When some larger objects collide with the Christmas trees, it is easy to cause wear and damage to the Christmas trees, increasing maintenance costs.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a quick-install wellhead device is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a quick-install wellhead device, which is achieved by the following specific technical means:

[0006] A quick-install wellhead device comprises a wellhead seat and an oil production tree, wherein a connecting groove is provided at the center position of the wellhead seat, a first flange is installed on the wellhead seat at a position located on the peripheral side of the connecting groove, four positioning grooves are provided at the four corners of the top end of the wellhead seat, a second flange is installed on the bottom end of the oil production tree, a mounting seat is installed on the bottom end of the oil production tree at a position located on the peripheral side of the second flange, a first slide groove is provided at the bottom end of the mounting seat at a position matching the four positioning grooves, a first trapezoidal block is slidably installed in the first slide groove, a plurality of first compression springs are installed on the top end of the first trapezoidal block, and the other end of the first compression spring is connected to the top end of the first slide groove, two pairs of casters are symmetrically installed on both sides of the bottom end of the mounting seat, and an isolation mechanism is installed on both sides of the top end of the mounting seat.

[0007] Furthermore, the size of the first trapezoidal block matches the size of the positioning groove.

[0008] Furthermore, the isolation mechanism includes a pair of second slide grooves, a pair of isolation fences and a pair of third slide grooves. The pair of second slide grooves are opened on both sides of the top of the mounting seat. A connecting plate is installed at the bottom end of the isolation fence, and the connecting plate is slidably connected to the second slide groove. A limiting groove is provided on one side of the connecting plate. A pair of third slide grooves are opened on both sides of the mounting seat, and the third slide groove is connected to the second slide groove. A second trapezoidal block is slidably installed in the third slide groove.

[0009] Furthermore, the position and size of the second trapezoidal block match the position and size of the limiting groove.

[0010] Furthermore, a plurality of second compression springs are installed at the upper and lower ends of the second trapezoidal block, and the other end of the second compression spring is connected to one side of the third sliding groove.

[0011] Furthermore, a pull ring is installed on one side of the second trapezoidal block.

[0012] Furthermore, a pair of the isolation fences are symmetrically arranged, and a side fence is installed on one side of the isolation fence.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The quick-install wellhead device of the utility model is convenient for quickly positioning and fixing the position of the oil tree after the position of the wellhead seat is fixed, through the coordinated use of the wellhead seat, the oil tree, the connecting groove, the first flange, the positioning groove, the second flange, the mounting seat, the first slide groove, the first trapezoidal block, the first compression spring and the casters, and when the oil tree needs to be disassembled and maintained, the oil tree can be quickly disassembled and moved, thereby improving the work efficiency of the wellhead device maintenance and reducing the maintenance cost.

[0015] The quick-install wellhead device in the utility model, through the coordinated use of the Christmas tree, the second slide groove, the isolation fence, the third slide groove, the connecting plate, the limit groove, the second trapezoidal block, the second compression spring, the pull ring and the side fence, is convenient for isolating the Christmas tree through the isolation fence and the side fence to prevent the Christmas tree from being worn and damaged by collision with objects, and when the Christmas tree needs to be maintained, the isolation fence can be quickly removed, thereby extending the service life of the wellhead device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0017] Figure 2 It is a side cross-sectional schematic diagram of the wellhead seat and the mounting seat of the utility model when they are connected.

[0018] Figure 3 It is a front cross-sectional schematic diagram of the wellhead seat and the mounting seat of the utility model when they are connected.

[0019] Figure 4 It is a side view schematic diagram of the inner part structure of the isolation fence of the utility model.

[0020] Figure 5 The utility model Figure 3 Enlarged schematic diagram of part A.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Wellhead seat; 2. Christmas tree; 3. Connecting groove; 4. First flange; 5. Positioning groove; 6. Second flange; 7. Mounting seat; 8. First slide groove; 9. First trapezoidal block; 10. First compression spring; 11. Caster; 12. Second slide groove; 13. Isolation fence; 14. Third slide groove; 15. Connecting plate; 16. Limiting groove; 17. Second trapezoidal block; 18. Second compression spring; 19. Pull ring; 20. Side fence. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example:

[0027] As attached Figure 1 To Attachment Figure 5 As shown:

[0028] The utility model provides a quick-install wellhead device, including a wellhead seat 1 and an oil production tree 2, a connecting groove 3 is provided at the center of the wellhead seat 1, a first flange 4 is installed at a position located on the peripheral side of the connecting groove 3 of the wellhead seat 1, four positioning grooves 5 are provided at the four corners of the top of the wellhead seat 1, a second flange 6 is installed at the bottom end of the oil production tree 2, a mounting seat 7 is installed at a position located on the peripheral side of the second flange 6 at the bottom end of the oil production tree 2, a first slide groove 8 is provided at the bottom end of the mounting seat 7 at a position matching the four positioning grooves 5, a first trapezoidal block 9 is slidably installed in the first slide groove 8, a plurality of first compression springs 10 are installed at the top end of the first trapezoidal block 9, and the other end of the first compression spring 10 is connected to the top end of the first slide groove 8, two pairs of casters 11 are symmetrically installed on both sides of the bottom end of the mounting seat 7, and isolation mechanisms are installed on both sides of the top end of the mounting seat 7.

[0029] Among them, the size of the first trapezoidal block 9 matches the size of the positioning groove 5. When the Christmas tree 2 is slid, the caster 11 can assist the movement of the Christmas tree 2. When the mounting seat 7 at the bottom of the Christmas tree 2 moves to the side of the wellhead seat 1, the first trapezoidal block 9 is first squeezed by the wellhead seat 1 and slides into the first slide groove 8. When the Christmas tree 2 continues to move until the first slide groove 8 is aligned with the positioning groove 5, the first trapezoidal block 9 is no longer squeezed by the wellhead seat 1. Under the action of the rebound of the first compression spring 10, it enters the positioning groove 5 to achieve the positioning of the Christmas tree 2.

[0030] Among them, the isolation mechanism includes a pair of second slide grooves 12, a pair of isolation fences 13 and a pair of third slide grooves 14. The pair of second slide grooves 12 are opened on both sides of the top of the mounting seat 7. A connecting plate 15 is installed at the bottom end of the isolation fence 13, and the connecting plate 15 is slidably connected to the second slide groove 12. A limiting groove 16 is provided on one side of the connecting plate 15. A pair of third slide grooves 14 are opened on both sides of the mounting seat 7, and the third slide groove 14 is connected to the second slide groove 12. A second trapezoidal block 17 is slidably installed in the third slide groove 14. When installing the isolation fence 13, the staff first inserts the connecting plate 15 into the second slide groove 12. At this time, the connecting plate 15 first squeezes the second trapezoidal block 17 to move the trapezoidal block away from the connecting plate 15. When the connecting plate 15 continues to move downward until the limiting groove 16 is aligned with the third slide groove 14, the second trapezoidal block 17 is no longer limited by the connecting plate 15. Under the action of the rebound of the second compression spring 18, it slides in the direction of the connecting plate 15 and enters the limiting groove 16 to fix the isolation fence 13.

[0031] The position and size of the second trapezoidal block 17 match the position and size of the limiting groove 16 , so that the second trapezoidal block 17 can enter the limiting groove 16 to fix the connecting plate 15 and the isolation fence 13 .

[0032] A plurality of second compression springs 18 are installed at the upper and lower ends of the second trapezoidal block 17 , and the other end of the second compression spring 18 is connected to one side of the third sliding groove 14 .

[0033] Among them, a pull ring 19 is installed on one side of the second trapezoidal block 17. When the isolation fence 13 needs to be removed, the staff can pull the pull ring 19 to move the second trapezoidal block 17 away from the connecting plate 15 and disengage from the limiting groove 16. At this time, the isolation fence 13 can be pushed upward to take out the isolation fence 13.

[0034] Among them, a pair of isolation fences 13 are symmetrically arranged, and a side fence 20 is installed on one side of the isolation fence 13 to improve the protection effect of the isolation fence 13.

[0035] Working principle of this embodiment: when installing the wellhead device, the staff first fixes the wellhead seat 1 at the wellhead position by bolts, and then pushes the Christmas tree 2 to move the Christmas tree 2 in the direction of the wellhead seat 1. When the mounting seat 7 at the bottom end of the Christmas tree 2 moves to one side of the wellhead seat 1, the first trapezoidal block 9 is first squeezed by the wellhead seat 1 and slides into the first slide groove 8. When the Christmas tree 2 continues to move until the first slide groove 8 is aligned with the positioning groove 5, the first trapezoidal block 9 is no longer squeezed by the wellhead seat 1, and enters the positioning groove 5 under the action of the rebound of the first compression spring 10 to achieve the positioning of the Christmas tree 2. After the positioning is completed, the staff fixes the first flange 4 and the second flange 6 together to achieve the fixation of the Christmas tree 2, and then inserts the connecting plate 15 into the second slide groove 12. At this time, the connecting plate 15 first squeezes the second trapezoidal block 17 to move the second trapezoidal block 17 away from the connecting plate 15. When the connecting plate 15 continues to move downward until the limiting groove 16 is aligned with the third slide groove 14, the second trapezoidal block 17 is no longer limited by the connecting plate 15. Under the action of the rebound of the second compression spring 18, it slides in the direction of the connecting plate 15 and enters the limiting groove 16 to fix the isolation fence 13. When the wellhead device needs to be disassembled and maintained, the staff first pulls the pull ring 19 to move the second trapezoidal block 17 away from the connecting plate 15 and disengage from the limiting groove 16. At this time, the isolation fence 13 can be taken out by pushing the isolation fence 13 upward, and then the second flange 6 is separated from the first flange 4, and the oil tree 2 is pushed. At this time, the first trapezoidal block 9 is squeezed by the wellhead seat 1, and slides into the first slide groove 8 again and no longer limits the mounting seat 7 and the oil tree 2. The staff continues to push the oil tree 2 until the oil tree 2 is completely pushed away from the wellhead seat 1 to complete the disassembly.

[0036] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. A quick-install wellhead device, comprising a wellhead seat (1) and a Christmas tree (2), characterized in that: A connecting groove (3) is provided at the center of the wellhead seat (1), a first flange (4) is installed at a position located on the periphery of the connecting groove (3) of the wellhead seat (1), four positioning grooves (5) are provided at the four corners of the top of the wellhead seat (1), a second flange (6) is installed at the bottom of the oil tree (2), a mounting seat (7) is installed at the bottom of the oil tree (2) at a position located on the periphery of the second flange (6), a first slide groove (8) is provided at the bottom of the mounting seat (7) at a position matching the four positioning grooves (5), a first trapezoidal block (9) is slidably installed in the first slide groove (8), a plurality of first compression springs (10) are installed at the top of the first trapezoidal block (9), and the other end of the first compression spring (10) is connected to the top of the first slide groove (8), two pairs of casters (11) are symmetrically installed on both sides of the bottom of the mounting seat (7), and an isolation mechanism is installed on both sides of the top of the mounting seat (7).

2. The quick-install wellhead device according to claim 1, characterized in that: The size of the first trapezoidal block (9) matches the size of the positioning groove (5).

3. The quick-install wellhead device according to claim 1, characterized in that: The isolation mechanism comprises a pair of second slide grooves (12), a pair of isolation fences (13) and a pair of third slide grooves (14). The pair of second slide grooves (12) are arranged on both sides of the top of the mounting seat (7). A connecting plate (15) is installed at the bottom end of the isolation fence (13), and the connecting plate (15) is slidably connected to the second slide groove (12). A limiting groove (16) is provided on one side of the connecting plate (15). The pair of third slide grooves (14) are arranged on both sides of the mounting seat (7), and the third slide grooves (14) are connected to the second slide grooves (12). A second trapezoidal block (17) is slidably installed in the third slide groove (14).

4. The quick-install wellhead device according to claim 3, characterized in that: The position and size of the second trapezoidal block (17) match the position and size of the limiting groove (16).

5. The quick-install wellhead device according to claim 3, characterized in that: A plurality of second compression springs (18) are installed at the upper and lower ends of the second trapezoidal block (17), and the other end of the second compression spring (18) is connected to one side of the third sliding groove (14).

6. The quick-install wellhead device according to claim 3, characterized in that: A pull ring (19) is installed on one side of the second trapezoidal block (17).

7. The quick-install wellhead device according to claim 3, characterized in that: A pair of the isolation fences (13) are symmetrically arranged, and a side fence (20) is installed on one side of the isolation fence (13).

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