Slip and oil pipe clamping device thereof

Abstract

The utility model relates to the technical field of gas lift plunger oil pipe clamping, in particular to a slip and an oil pipe clamping device thereof, the slip comprises a main body of a block body structural member, an anti-skidding component is arranged on the surface of one side of the main body, and the surface of one side, far away from the anti-skidding component, of the main body is a plane. The surface of the side, provided with the anti-skid component, of the main body is an inclined plane, a first connecting part is arranged at the top end of the main body, a second connecting part is arranged at the bottom end of the main body, and the first connecting part and the second connecting part are sheet body structural parts which are arranged in parallel. The main body structure is simple, manufacturing is easy, the manufacturing cost is low, meanwhile, the slip is connected and fixed through the first connecting part and the second connecting part of the sheet body structural part, connection is more stable, the matching relation is easier to achieve, the assembling difficulty of the slip can be reduced, the oil pipe clamping device adopts the slip, the structure principle is simple, and the manufacturing cost is low. Assembly is easy, use is convenient, and the overall manufacturing cost of the oil pipe clamping device can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas lift plunger tubing locking technology, specifically to a slip and its tubing locking device. Background Technology

[0002] Gas lift plunger drainage gas production is an intermittent artificial lifting method that uses reservoir energy to carry liquid. In conventional gas lift plunger drainage gas production, the descent depth of the gas lift plunger is determined by the insertion position of the coupling clamp, and the original coupling clamp position adjustment flexibility is not high.

[0003] An improved tubing clamp, such as the Chinese utility model patent CN220378229U, provides a tubing clamp that utilizes the inertia generated by a "sudden braking" action to cause relative movement between the core rod and the central tube. During this relative movement, the locking block is squeezed and retracts towards the interior of the core rod, releasing the limiting effect on the core rod, central tube, and first abutment sleeve. Simultaneously, the second abutment sleeve remains in its original position. At this point, under the action of the elastic element, the first abutment sleeve moves upward and pushes the slips open (i.e., the connection between the slips and the first abutment sleeve moves closer to the inner wall of the tubing), allowing the slips to abut against the inner wall of the tubing. This enables the tubing clamp to be locked at any position on the tubing.

[0004] The slips in the improved tubing clamp are an important component for its stable installation in the pipeline. However, the slips need to be processed and used in conjunction with the adjacent components above and below along the axis of the tubing clamp. The structure is relatively complex and the requirements for the fit with the adjacent parts are high. This makes the assembly of the slips part of the tubing clamp more difficult and the overall manufacturing cost is higher, which is not conducive to the widespread application of the tubing clamp. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology, such as the complex and difficult-to-process structure of the slips in the tubing clamp, which leads to the difficulty in assembling the slips and the high overall manufacturing cost, and to provide a slip and tubing clamp thereof.

[0006] In a first aspect, this utility model provides a clasp, including a main body of a block structure, an anti-slip member on one side surface of the main body, a flat surface on the side of the main body away from the anti-slip member, an inclined surface on the side surface of the main body where the anti-slip member is located, a first connecting part at the top end of the main body and a second connecting part at the bottom end, wherein the first connecting part and the second connecting part are sheet structures arranged in parallel.

[0007] The present invention relates to a slip with a simple main structure and easy preparation. It can be prepared by conventional mechanical processing methods such as cutting, resulting in low preparation cost. At the same time, the slip is connected and fixed by using the first and second connecting parts of the sheet structure. Compared with the existing slip connection structure, the connection is more stable and the fit is easier to achieve, which can reduce the assembly difficulty of the slip and facilitate the promotion and application of the oil pipe clamping device using this slip.

[0008] Preferably, the first connecting portion is located on the edge of the top surface of the main body away from the anti-slip member. Increasing the lateral distance between the first connecting portion and the anti-slip member on the same vertical projection plane allows the slip to adjust the position of the anti-slip member with a smaller rotation distance.

[0009] Preferably, the main body includes a first segment and a second segment, the cross-section of the first segment gradually increases from top to bottom, the first segment and the second segment are connected by an arc transition on the surface of the anti-slip component, the first connecting part is disposed at the top of the first segment, and the second connecting part is disposed at the bottom of the second segment.

[0010] Preferably, the top end of the first connecting part has an arc-shaped surface to facilitate the smooth rotation of the locking mechanism.

[0011] Preferably, the second connecting part is an inverted T-shaped structure. This ensures the stability of the connection between the latch and the adjacent structural component, preventing the connection from disengaging during rotation.

[0012] Preferably, the anti-slip component includes a plurality of parallel protrusions and / or grooves.

[0013] Secondly, this utility model provides a tubing clamp, including a core rod, a central tube fitted over the core rod, and a retrieval head, a support sleeve, a slip seat, and a limiting sleeve sequentially fitted onto the central tube from top to bottom along the axial direction. The support sleeve is partially fitted onto the retrieval head. An elastic element is provided between the slip seat and the limiting sleeve. The support sleeve, the retrieval head, and the central tube are connected by shear pins for limiting. A plurality of slips of the aforementioned type are distributed between the support sleeve and the slip seat. The slips can be kept within the axial projection of the support sleeve and the slip seat in a first state and can be kept extending beyond the projection in a second state. The elastic element can be in a compressed state in the first state and in a freely extended state in the second state. The core rod, the central tube, and the slip seat are connected by a telescopic locking block for limiting in the first state.

[0014] This utility model discloses a tubing clamp, which, by adopting the above-mentioned clamping slip, has a simple structure and principle, is easy to assemble and convenient to use, can reduce the overall manufacturing cost of the tubing clamp, and has a good performance.

[0015] Preferably, the bottom of the abutment sleeve is provided with a plurality of first limiting grooves, the first limiting grooves being disposed on the edge of the abutment sleeve near the axis, and the first connecting part being embedded in the first limiting groove. This ensures that after the slip is assembled, it can be stably maintained in the first state, and can remain within the axial projection of the abutment sleeve and the slip seat, ensuring smooth movement of the tubing clamp within the tubing.

[0016] Preferably, the top of the slip seat is provided with a plurality of second limiting grooves, and the second connecting part is slidably disposed in the second limiting grooves. This allows the slip to maintain rotation in a certain direction under the thrust of the mutual approaching sleeve and slip seat, and allows the anti-slip component to extend beyond the axial projection of the sleeve and slip seat, thereby achieving a locking setting within the oil pipe.

[0017] Preferably, the second limiting groove extends in a direction perpendicular to the axis, and the length of the opening of the second limiting groove is greater than the width of the second connecting part. This facilitates the assembly and connection of the locking jaws and the locking jaw seat.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model provides a clapper that is easy to manufacture and has a low manufacturing cost by adopting a simple main body structure;

[0020] 2. This utility model provides a slip, which achieves connection and fixation of the slip by adopting the first connecting part and the second connecting part of the sheet structure. Compared with the existing slip connection structure, the connection is more stable and the fit is easier to achieve, which can reduce the assembly difficulty of the slip and facilitate the promotion and application of the oil pipe clamping device using this slip.

[0021] 3. This utility model provides a tubing clamp. By adopting the above-mentioned clamp, the structure and principle are simple, the assembly is easy and the use is convenient. It can reduce the overall manufacturing cost of the tubing clamp and has a good effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a kava in Example 1;

[0023] Figure 2 This is a schematic diagram of the structure of a tubing clamp according to Example 2;

[0024] Figure 3 This is a schematic diagram of the core rod structure described in Example 2;

[0025] Figure 4 This is a schematic diagram of the structure of the central tube described in Example 2;

[0026] Figure 5 This is a schematic diagram of the retrieval head described in Example 2;

[0027] Figure 6 This is a schematic diagram of the structure of the abutment sleeve described in Example 2;

[0028] Figure 7 This is a schematic diagram of the bottom structure of the abutment sleeve described in Example 2;

[0029] Marked in the image:

[0030] 1-Main body, 11-First segment, 12-Second segment, 13-Arc surface, 2-Anti-slip component, 3-First connecting part, 31-Arc surface, 4-Second connecting part, 5-Core rod, 6-Central tube, 7-Retrieving head, 8-Top sleeve, 81-First limiting groove, 9-Card seat, 91-Second limiting groove, 10-Limiting sleeve, 20-Elastic element, 30-Scissors nail, 40-Telescopic lock block. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0032] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0034] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0035] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0036] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0037] Example 1

[0038] like Figure 1 As shown, a type of clapper includes a main body 1 of a block structure. One side surface of the main body 1 is provided with an anti-slip component 2. The side surface of the main body 1 away from the anti-slip component 2 is flat. The side surface of the main body 1 with the anti-slip component 2 is inclined. The top of the main body 1 is provided with a first connecting part 3 and the bottom is provided with a second connecting part 4. The first connecting part 3 and the second connecting part 4 are sheet structures arranged in parallel.

[0039] This embodiment of a slip has a main body 1 that is a vertical strip-shaped block structure. One side surface of the main body 1 is provided with an anti-slip component 2. The side surface of the main body 1 away from the anti-slip component 2 is flat, and the side surface of the main body 1 with the anti-slip component 2 is inclined, so that the main body 1 is a vertical strip shape that is smaller at the top and larger at the bottom. The anti-slip component 2 is closer to one side of the main body 1 than the first connecting part 3. The structure is simple and easy to manufacture. During manufacturing, only conventional mechanical processing such as cutting and turning of the outer surface is required. When used in an oil pipe clamp, the slip can be quickly assembled by inserting it with the adjacent components through the first connecting part 3 and the second connecting part 4 of the sheet structure.

[0040] In one or more embodiments, the first connecting part 3 may be provided on the edge of the top surface of the main body 1 away from the anti-slip member 2, so as to further increase the lateral distance between the first connecting part 3 and the anti-slip member 2 on the same vertical projection plane, so that the slip can rotate smoothly, avoid interference with adjacent members, and complete the adjustment of the position of the anti-slip member 2 with a small rotation distance.

[0041] In one or more embodiments, the main body 1 may include a first segment 11 and a second segment 12. The cross-section of the first segment 11 gradually increases from top to bottom. The first segment 11 and the second segment 12 may be connected by an arc surface 13 on the surface where the anti-slip component 2 is located. The first connecting part 3 is disposed at the top of the first segment 11 and the second connecting part 4 is disposed at the bottom of the second segment 12.

[0042] In an optional embodiment, the first segment 11 is gradually thinner than the second segment 12, that is, the first segment 11 is thinner than the second segment 12, so that the slip can rotate smoothly around the first connecting part 3 without interfering with the position of the upper adjacent component.

[0043] In one or more embodiments, the top of the first connecting part 3 and the bottom of the second connecting part 4 can both be configured as arc-shaped surfaces 31, so that the clapper can rotate smoothly around the first connecting part 3 when in use.

[0044] In one or more embodiments, the second connecting portion 4 is an inverted T-shaped structure. This ensures the stability of the connection between the latch and the adjacent structural component, preventing the connection from disengaging during rotation.

[0045] In an optional embodiment, the anti-slip component 2 may include a plurality of parallel protrusions and / or grooves.

[0046] The slip in this embodiment has a simple main body 1 structure, which is easy to manufacture and can be prepared by conventional machining methods, resulting in low manufacturing costs. At the same time, the slip is connected and fixed by using the first connecting part 3 and the second connecting part 4 of the sheet structure. Compared with the existing slip connection structure, the connection is more stable and the fit is easier to achieve, which can reduce the assembly difficulty of the slip and facilitate the promotion and application of the tubing clamp using this slip.

[0047] Example 2

[0048] like Figures 1-7 As shown, a tubing clamp includes a core rod 5, with a central tube 6 fitted around the core rod 5. Along the axial direction, from top to bottom, the central tube 6 is fitted with a retrieval head 7, a support sleeve 8, a slip seat 9, and a limiting sleeve 10. The support sleeve 8 is partially fitted onto the retrieval head 7. An elastic element 20 is provided between the slip seat 9 and the limiting sleeve 10. The support sleeve 8, the retrieval head 7, and the central tube 6 are limited and connected by shear pins 30. Several slips of one embodiment 1 are distributed between the support sleeve 8 and the slip seat 9. The slips can remain within the axial projection of the support sleeve 8 and the slip seat 9 in a first state and can remain extended beyond the projection in a second state. The elastic element 20 can be in a compressed state in the first state and in a freely extended state in the second state. The core rod 5, the central tube 6, and the slip seat 9 are limited and connected by a telescopic locking block 40 in the first state.

[0049] In an optional embodiment, the elastic element 20 can be a spring; the core rod 5, the central tube 6, the retrieval head 7, the abutment sleeve 8, the locking seat 9, and the limiting sleeve 10 are all tubular structural components; the telescopic locking block 40 can be a structural component that is provided on the central tube 6 and can extend out of the central tube 6 and retract into the central tube 6 to abut against the core rod 5.

[0050] In one or more embodiments, the bottom of the abutment sleeve 8 is provided with a plurality of first limiting grooves 81. The first limiting grooves 81 are located on the edge of the abutment sleeve 8 near the axis, and the first connecting part 3 is embedded in the first limiting groove 81. This ensures that after the slip is assembled, it can be stably maintained in the first state and can be kept within the axial projection of the abutment sleeve 8 and the slip seat 9, ensuring the smooth movement of the oil pipe clamp in the oil pipe.

[0051] In an optional embodiment, the shape of the first limiting groove 81 can be similar to that of the first connecting part 3. After the first connecting part 3 is embedded in the first limiting groove 81, a certain gap is formed between the first connecting part 3 and the first limiting groove 81 in the thickness direction of the sheet structure, so that the slip can rotate relative to the abutment sleeve 8 under the thrust in the direction along the axial direction of the central tube 6.

[0052] In one or more embodiments, the top of the slip seat 9 is provided with a plurality of second limiting grooves 91, which extend in a direction perpendicular to the axis. The second connecting part 4 is slidably disposed within the second limiting grooves 91. This allows the slip to maintain rotation in a defined direction under the mutual thrust of the abutment sleeve 8 and the slip seat 9, and allows the anti-slip member 2 to extend beyond the axial projection of the abutment sleeve 8 and the slip seat 9, thus achieving a locking setting within the oil pipe.

[0053] In an optional embodiment, the bottom of the second limiting groove 91 may be provided with a certain tilt angle that gradually decreases from the inside to the outside. The tilt angle may be a small 1°-3°, so that the slip is not easy to move along the second limiting groove 91 under its own weight, but can move relative to the second limiting groove 91 in a determined direction under the action of external force, so that the slip can switch from the first state to the second state under the action of the elastic member 20.

[0054] In an optional embodiment, the second limiting groove 91 is a groove structure extending in a direction perpendicular to the axis of the central tube 6. A limiting strip is provided at the groove opening of the second limiting groove 91, so that the groove opening area of ​​the second limiting groove 91 is smaller than the internal cross-section of the second limiting groove 91. This can stably limit the second connecting part 4 of the T-shaped structure within the second limiting groove 91. Combined with the arc surface feature at the bottom of the second connecting part 4, the first connecting part 3 at the top of the slip is limited by the abutment sleeve 8, and the second connecting part 4 at the bottom moves in the limited direction along the inner bottom of the second limiting groove 91. This allows the slip to rotate relative to the abutment sleeve 8 in the limited direction under the thrust in the axial direction of the central tube 6.

[0055] In an optional embodiment, the length of the second limiting groove 91 is greater than the width of the second connecting part 4, to facilitate the assembly and connection of the locking plate and the locking plate seat 9.

[0056] In this embodiment, a tubing clamp is used to lower the clamp to a predetermined position within the tubing. First, the top of the clamp is connected to the downhole tool. The clamp is then lowered into the tubing using an instrument cart. When the clamp reaches the predetermined position, the instrument cart immediately brakes, using inertia to cause relative movement between the core rod 5 and the central tube 6. The central tube 6 presses the telescopic locking block 40 into the core rod 5, releasing the restriction on the slip seat 9. This causes the spring to extend from its compressed state. At this time, the slip seat 9 moves upwards towards the abutment sleeve 8 under the action of the spring. Because the abutment sleeve 8 is limited by the shear pin 30, the slip is subjected to a thrust along the axis of the core rod 5. Its second connecting part 4 moves within the second limiting groove 91, causing the slip to rotate relative to the core rod 5, thus locking the clamp. The anti-slip component 2 on the slip plate protrudes from the axial projection of the top sleeve 8 and the slip seat 9, so that the slip is in contact with the inner wall of the tubing and is kept in a tight state under the continuous action of the spring. After the downhole tool is removed, the tubing clamp is deployed. When it is necessary to remove the tubing clamp, a retrieval tube is lowered into the tubing. The retrieval tube captures the retrieval head 7 under its own weight. At the same time, the shock device installed on the retrieval tube is activated, causing the shear pin 30 to break, releasing the relative position restriction between the top sleeve 8 and the central tube 6, so that the top sleeve 8 can continue to move upward under the action of the spring, releasing the spring thrust. At this time, the top of the slip loses support, the slip returns to its original position, and the abutment effect with the inner wall of the tubing is released. The tubing clamp can be removed by lifting the retrieval tube wire.

[0057] The tubing clamp of this embodiment adopts the above-mentioned slips, which has a simple structure and principle, is easy to assemble and use, can reduce the overall manufacturing cost of the tubing clamp, and has a good performance.

[0058] 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 and improvements 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 slip, characterized in that The utility model provides a kind of block structure piece including main body (1), the main body (1) one side surface is equipped with anti-skid component (2), the main body (1) is away from the side surface of anti-skid component (2) plane, the main body (1) is set the side surface of anti-skid component (2) is inclined plane, the main body (1) top is equipped with first connecting portion (3), bottom is equipped with second connecting portion (4), the first connecting portion (3) and the second connecting portion (4) are parallelly arranged sheet structure piece.

2. A slip according to claim 1, wherein, The first connecting portion (3) is arranged on the side edge of the top surface of the main body (1) away from the anti-skid component (2).

3. A slip according to claim 2, wherein, The main body (1) includes a first segment (11) and a second segment (12), the cross section of the first segment (11) gradually increases from top to bottom, the first segment (11) and the second segment (12) are connected by an arc surface (13) on the surface where the anti-skid component (2) is located, the first connecting portion (3) is arranged on the top of the first segment (11), and the second connecting portion (4) is arranged on the bottom of the second segment (12).

4. A slip according to claim 3, wherein, The top end of the first connecting portion (3) is provided with an arc surface (31).

5. A slip according to claim 3, wherein, The second connecting portion (4) is in the form of an inverted T-shaped structure.

6. A slip according to any one of claims 1 to 5, wherein, The anti-skid component (2) includes a plurality of parallelly arranged convex ribs and / or grooves.

7. A tubing stopper characterized by, The utility model provides a kind of block structure piece including main body (1), the main body (1) one side surface is equipped with anti-skid component (2), the main body (1) is away from the side surface of anti-skid component (2) plane, the main body (1) is set the side surface of anti-skid component (2) is inclined plane, the main body (1) top is equipped with first connecting portion (3), bottom is equipped with second connecting portion (4), the first connecting portion (3) and the second connecting portion (4) are parallelly arranged sheet structure piece. The first connecting portion (3) is arranged on the side edge of the top surface of the main body (1) away from the anti-skid component (2).

8. A tubing stopper as defined in claim 7, wherein The main body (1) includes a first segment (11) and a second segment (12), the cross section of the first segment (11) gradually increases from top to bottom, the first segment (11) and the second segment (12) are connected by an arc surface (13) on the surface where the anti-skid component (2) is located, the first connecting portion (3) is arranged on the top of the first segment (11), and the second connecting portion (4) is arranged on the bottom of the second segment (12).

9. A tubing stopper as defined in claim 8, wherein The top end of the first connecting portion (3) is provided with an arc surface (31).

10. A tubing stopper as defined in claim 9, wherein The second connecting portion (4) is in the form of an inverted T-shaped structure. The anti-skid component (2) includes a plurality of parallelly arranged convex ribs and / or grooves. The utility model provides a kind of block structure piece including main body (1), the main body (1) one side surface is equipped with anti-skid component (2), the main body (1) is away from the side surface of anti-skid component (2) plane, the main body (1) is set the side surface of anti-skid component (2) is inclined plane, the main body (1) top is equipped with first connecting portion (3), bottom is equipped with second connecting portion (4), the first connecting portion (3) and the second connecting portion (4) are parallelly arranged sheet structure piece. The first connecting portion (3) is arranged on the side edge of the top surface of the main body (1) away from the anti-skid component (2). The main body (1) includes a first segment (11) and a second segment (12), the cross section of the first segment (11) gradually increases from top to bottom, the first segment (11) and the second segment (12) are connected by an arc surface (13) on the surface where the anti-skid component (2) is located, the first connecting portion (3) is arranged on the top of the first segment (11), and the second connecting portion (4) is arranged on the bottom of the second segment (12). The top end of the first connecting portion (3) is provided with an arc surface (31). The second connecting portion (4) is in the form of an inverted T-shaped structure. The anti-skid component (2) includes a plurality of parallelly arranged convex ribs and / or grooves.

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