Wellhead slip support fixture

Abstract

The utility model provides a kind of wellhead slip support fixing device, including support platform, first slip support fixing mechanism is equipped in the support platform upper, first slip support fixing mechanism upper is equipped with lifting platform, the lifting platform top is equipped with second slip support fixing mechanism, the support platform is sleeved on wellhead casing, wellhead casing is also installed slip assembly, and wellhead casing upper sequentially passes first slip support fixing mechanism, lifting platform and second slip support fixing mechanism.This utility model has the beneficial effects: device is set first slip support fixing mechanism and second slip support fixing mechanism, can solve the problem that local stress concentration is easily caused by welding pipe hoop support, in turn make slip support effect is better, and lifting platform can be lifted, can be adjusted installation according to actual situation, practicality is strong, and this wellhead slip support fixing device can avoid punching on wellhead casing, can be attached to the actual situation demand of mine party.

Description

Technical Field

[0001] This utility model belongs to the field of mining drilling engineering technology, and in particular relates to a wellhead slip support and fixing device. Background Technology

[0002] Slips are specialized tools used during downhole drilling operations to secure drill pipe or tubing to the wellhead flange or rotary table. They reduce worker workload and increase downhole speed. Based on the power source, slips are divided into two main categories: manual slips and powered slips. Manual slips are operated manually to tighten or loosen the tubing; powered slips are propelled by gas or liquid pressure to perform the specified action. Existing technology suffers from stress concentration issues: welded pipe clamp supports easily cause localized stress concentration, leading to poor slip support performance. Utility Model Content

[0003] In view of this, the present invention aims to provide a wellhead slip support and fixing device to solve the stress concentration problem existing in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A wellhead slip support and fixing device includes a support platform, a first slip support and fixing mechanism above the support platform, a lifting platform above the first slip support and fixing mechanism, a second slip support and fixing mechanism on the top of the lifting platform, the support platform being sleeved on the wellhead casing, slip components being installed on the wellhead casing, and the first slip support and fixing mechanism, the lifting platform, and the second slip support and fixing mechanism passing sequentially through the top of the wellhead casing.

[0006] Furthermore, the support platform has a first clearance hole in the middle for the wellhead casing to pass through, and a support column is set at each of the four corners of the bottom of the support platform.

[0007] Furthermore, the first slip support fixing mechanism includes a support base, two first slide rails, two fixing rings, and two first drive sources. The bottom of the support base is installed on the support platform via a mounting column. A first slide rail is installed at each of the two ends of the upper part of the support base. A fixing ring is slidably connected above each first slide rail. The two fixing rings are symmetrically arranged, and a first drive source is installed at one end of each fixing ring.

[0008] Furthermore, a second clearance hole is provided in the middle of the support base for the wellhead casing to pass through.

[0009] Furthermore, a first sliding groove is provided at one end of the bottom of the fixing ring, and a first annular groove is provided at the other end of the fixing ring.

[0010] Furthermore, the lifting platform includes a lifting platform body, four guide sleeves and a lifting component. The four corners of the bottom of the lifting platform body are respectively installed to the support platform through a guide sleeve. The lifting component is also installed at the bottom of the lifting platform body, and the lifting component is used to lift the lifting platform body.

[0011] Furthermore, the lifting platform body has a third clearance hole in the middle for the wellhead casing to pass through, and the third clearance hole, the second clearance hole, and the first clearance hole are coaxially arranged.

[0012] Furthermore, the second slip support fixing mechanism includes two support rings and two second drive sources. The two support rings are symmetrically arranged above the lifting platform body, and a second drive source is installed at one end of each support ring.

[0013] Furthermore, the second locking ring support fixing mechanism also includes a second slide rail, a second slide groove is provided at one end of the bottom of the support ring, the second slide groove is used in conjunction with the second slide rail, a second annular groove is provided at the other end of the fixing ring, and a weight reduction hole is also provided above the support ring.

[0014] Compared with the prior art, the wellhead slip support fixing device of this utility model has the following advantages: The wellhead slip support fixing device of this utility model, by setting a first slip support fixing mechanism and a second slip support fixing mechanism, can solve the problem of local stress concentration caused by welded pipe clamp support, thereby making the slip support effect better. Moreover, the lifting platform can be raised and lowered, and can be adjusted and installed according to the actual situation, which is highly practical. Furthermore, this wellhead slip support fixing device can avoid drilling holes in the wellhead casing, which can meet the actual needs of the mine. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure as described in an embodiment of the present utility model;

[0017] Figure 2 This is a partial schematic diagram of the overall structure described in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the second slip support fixing mechanism described in an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Support platform; 11. Support column; 2. First slip support and fixing mechanism; 21. Support base; 22. First slide rail; 23. Fixing ring; 24. First drive source; 3. Lifting platform; 31. Lifting platform body; 32. Guide casing; 4. Second slip support and fixing mechanism; 41. Support ring; 42. Second drive source; 5. Wellhead casing; 6. Slip assembly. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 3 As shown, the wellhead slip support and fixing device includes a support platform 1, a first slip support and fixing mechanism 2 is provided above the support platform 1, a lifting platform 3 is provided above the first slip support and fixing mechanism 2, a second slip support and fixing mechanism 4 is provided on the top of the lifting platform 3, the support platform 1 is sleeved on the wellhead casing 5, and slip components 6 are also installed on the wellhead casing 5, with the first slip support and fixing mechanism 2, the lifting platform 3 and the second slip support and fixing mechanism 4 passing through the top of the wellhead casing 5 in sequence.

[0026] This wellhead slip support fixing device, by setting up a first slip support fixing mechanism 2 and a second slip support fixing mechanism 4, can solve the problem of local stress concentration caused by welded pipe clamp support, thereby making the slip support effect better. Moreover, the lifting platform 3 can be raised and lowered, and can be adjusted and installed according to the actual situation, which is highly practical. Furthermore, this wellhead slip support fixing device can avoid drilling holes in the wellhead casing, which can meet the actual needs of the mine.

[0027] In a preferred embodiment of this utility model, the support platform 1 has a first clearance hole in the middle for the well casing 5 to pass through, and a support column 11 is set at each of the four corners of the bottom of the support platform 1. In actual use, the support column 11 can be installed on a cement platform around the well casing 5. In this embodiment, the support platform 1 can also be a flange platform. With the setting of the support column 11, space can also be left at the bottom of the support platform 1 for workers to install pipe clamps, which is highly practical.

[0028] In a preferred embodiment of this utility model, the first slip support fixing mechanism 2 includes a support base 21, two first slide rails 22, two fixing rings 23, and two first drive sources 24. The bottom of the support base 21 is mounted on the support platform 1 via a mounting column. A first slide rail 22 is installed at each of the two ends of the support base 21. A fixing ring 23 is slidably connected above each first slide rail 22. The two fixing rings 23 are symmetrically arranged, and a first drive source 24 is installed at one end of each fixing ring 23. In this embodiment, the first drive source 24 can be a cylinder or an electric telescopic rod. In actual use, when stress dispersion support is required for the wellhead casing 5, by driving the first drive source 24, the telescopic rods of the two first drive sources 24 push the two fixing rings 23 closer to each other, thereby tightly abutting the wellhead casing 5.

[0029] In a preferred embodiment of this utility model, a second clearance hole is provided in the middle of the support base 21 for the well casing 5 to pass through. In actual use, the size of the second clearance hole can be the same as the size of the first clearance hole to avoid interfering with the passage of the well casing 5.

[0030] In a preferred embodiment of this utility model, a first sliding groove is provided at one end of the bottom of the fixing ring 23, and a first annular groove is provided at the other end of the fixing ring 23. In this way, the first annular grooves of the two fixing rings 23 can be symmetrically arranged on both sides of the wellhead casing 5, so as to facilitate the locking of the wellhead casing 5. In this embodiment, the first sliding groove facilitates the sliding of the first sliding rail 22 within it. It should be noted that, in order to avoid interference with the first annular groove locking the wellhead casing 5, the first sliding groove is not connected to the first annular groove.

[0031] In a preferred embodiment of this utility model, the lifting platform 3 includes a lifting platform body 31, four guide sleeves 32, and a lifting component. The four corners of the bottom of the lifting platform body 31 are respectively installed to the support platform 1 through a guide sleeve 32. The lifting component is also installed at the bottom of the lifting platform body 31. The lifting component is used to lift the lifting platform body 31. In actual use, the number of lifting components can be one or more, depending on the actual situation. The lifting component can be a driving cylinder, an electric telescopic rod, or other lifting components.

[0032] In a preferred embodiment of this utility model, a third clearance hole is provided in the middle of the lifting platform body 31 for the well casing 5 to pass through, and the third clearance hole, the second clearance hole and the first clearance hole are coaxially arranged. In actual use, the size of the third clearance hole can be the same as the size of the first clearance hole and the second clearance hole to avoid interfering with the passage of the well casing 5.

[0033] In a preferred embodiment of the present invention, the second slip support fixing mechanism 4 includes two support rings 41 and two second drive sources 42. The two support rings 41 are symmetrically arranged above the lifting platform body 31. Each support ring 41 has a second drive source 42 installed at one end. In this embodiment, the second drive source 42 can be a cylinder or an electric telescopic rod.

[0034] In a preferred embodiment of this utility model, the second slip support fixing mechanism 4 further includes a second slide rail. A second sliding groove is provided at one end of the bottom of the support ring 41, and the second sliding groove cooperates with the second slide rail. A second annular groove is provided at the other end of the fixing ring 23. A weight-reducing hole is also provided above the support ring 41. In this embodiment, the second annular grooves of the two support rings 41 can be symmetrically arranged on both sides of the wellhead casing 5, thereby facilitating the locking of the wellhead casing 5. In this embodiment, the second sliding groove facilitates the sliding of the second slide rail within it. It should be noted that, to avoid interference with the second annular groove locking the wellhead casing 5, the second sliding groove is not connected to the second annular groove.

[0035] This wellhead slip support and fixing device is also suitable for wellhead casing 5 without drilling. This is because in actual use, the mine may require maintaining the integrity of the casing and not drilling holes or inserting rods. In such cases, wellhead support cannot be used when running the casing. Therefore, it is designed that a pipe clamp needs to be welded to the top of the casing during the casing running process, and a large slip is used to hold the casing at the wellhead and reinforce it to prevent the casing from sliding down. However, this situation is prone to stress concentration problems. This wellhead slip support and fixing device can solve the problem of stress concentration under the slip assembly 6.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wellhead slip support and fixing device, characterized in that: The device includes a support platform (1), a first slip support and fixing mechanism (2) is provided above the support platform (1), a lifting platform (3) is provided above the first slip support and fixing mechanism (2), a second slip support and fixing mechanism (4) is provided on the top of the lifting platform (3), the support platform (1) is sleeved on the wellhead casing (5), and slip components (6) are also installed on the wellhead casing (5), and the first slip support and fixing mechanism (2), the lifting platform (3) and the second slip support and fixing mechanism (4) pass through the wellhead casing (5) in sequence.

2. The wellhead slip support and fixing device according to claim 1, characterized in that: The support platform (1) has a first clearance hole in the middle for the wellhead casing (5) to pass through, and a support column (11) is set at each of the four corners of the bottom of the support platform (1).

3. The wellhead slip support and fixing device according to claim 1, characterized in that: The first slip support fixing mechanism (2) includes a support base (21), two first slide rails (22), two fixing rings (23) and two first drive sources (24). The bottom of the support base (21) is installed above the support platform (1) by a mounting column. A first slide rail (22) is installed at each of the two ends of the support base (21). A fixing ring (23) is slidably connected above each first slide rail (22). The two fixing rings (23) are symmetrically arranged, and a first drive source (24) is installed at one end of each fixing ring (23).

4. The wellhead slip support and fixing device according to claim 3, characterized in that: The support base (21) has a second clearance hole in the middle for the wellhead casing (5) to pass through.

5. The wellhead slip support and fixing device according to claim 3, characterized in that: The bottom end of the fixing ring (23) is provided with a first sliding groove, and the other end of the fixing ring (23) is provided with a first annular groove.

6. The wellhead slip support and fixing device according to claim 4, characterized in that: The lifting platform (3) includes a lifting platform body (31), four guide sleeves (32) and a lifting component. The four corners of the bottom of the lifting platform body (31) are respectively installed to the support platform (1) through a guide sleeve (32). The lifting platform body (31) is also installed at the bottom of the bottom of the lifting platform body (31). The lifting component is used to lift the lifting platform body (31).

7. The wellhead slip support and fixing device according to claim 6, characterized in that: The lifting platform body (31) has a third clearance hole in the middle for the well casing (5) to pass through, and the third clearance hole, the second clearance hole and the first clearance hole are coaxially arranged.

8. The wellhead slip support and fixing device according to claim 3, characterized in that: The second slip support fixing mechanism (4) includes two support rings (41) and two second drive sources (42). The two support rings (41) are symmetrically arranged above the lifting platform body (31), and a second drive source (42) is installed at one end of each support ring (41).

9. The wellhead slip support and fixing device according to claim 8, characterized in that: The second clamp support fixing mechanism (4) also includes a second slide rail. A second slide groove is provided at one end of the bottom of the support ring (41). The second slide groove is used in conjunction with the second slide rail. A second annular groove is provided at the other end of the fixing ring (23). A weight reduction hole is also provided above the support ring (41).

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