Safety slip
By designing a safety tile for oil drilling equipment, the problem of the oil pipe becoming unbendable due to external forces during the descent process is solved, and the effective straightening and limiting of the oil pipe is achieved, which enhances the smoothness and safety of the descent.
Patent Information
- Application Number
- CN202510235228.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-05-09
AI Technical Summary
During the oil and gas collection process, the oil pipe and composite connector are prone to bend and not straight due to external forces during the descent process, resulting in a deviation of the position after the connection, which in turn affects the smooth progress of the descent. Moreover, the length of the oil pipe is too long, and the limit range of the safety tile alone is insufficient.
A safety tile is designed, including a tile and an adjusting clamping assembly. By placing the safety tile in the interior of the T-tee installed on the blowout preventer, the sheared oil pipe is straightened, and the oil pipe is limited and clamped by the adjustment clamping assembly to extend the straightening range of the oil pipe.
It effectively avoids difficulties caused by position deviation during the deposition of the oil pipe and composite connectors, reduces the workload of staff, reduces the impact on the project progress, and enhances the safety of the oil pipe drop, preventing tools and small objects from falling into the well.
Smart Images
Figure CN119957113A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of oil drilling equipment, in particular to a safety slip. Background Art
[0002] When collecting oil and gas, it is necessary to lower continuous tubing into the oil and gas completion well. During the lowering, a blowout preventer is needed to transport the tubing and structures such as the composite connector and tubing hanger connected to the tubing from the ground to the completion well.
[0003] However, in the actual operation, the inventors found that the following problems still exist: in the process of transporting the oil pipe and the composite connectors and tubing hangers connected to the oil pipe from the ground, the channel for lowering the oil pipe from the blowout preventer is often relatively large. At the same time, the oil pipe is installed on the oil pipe transportation vehicle in a winding manner. When lowering the oil pipe, the oil pipe will become bent and not straight under the action of external force. When the composite connectors and tubing hangers are installed on the oil pipe after the oil pipe is cut, the composite connector and tubing hanger to be connected on the oil pipe will also be displaced after connection, which makes it difficult to lower the composite connector and tubing hanger through the blowout preventer. In addition, since two sets of identical slips are fitted together to form a whole, the overall length of the oil pipe is too long, and the range of straightening limited by the length of the safety slips alone is limited.
[0004] Based on this, the present invention provides a safety slip. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a safety slip, which can be placed inside a T-joint installed on a blowout preventer after the oil pipe is lowered into place and before the oil pipe is sheared, so as to straighten the sheared oil pipe, thereby avoiding a large deviation of the original bent and crooked oil pipe after the composite connector and the tubing hanger to be connected to the oil pipe are connected, and preventing manual tools from falling into the well when making joints on the platform. The oil pipe can also be limited, so the range of straightening the oil pipe can be extended.
[0006] The present invention provides the following technical solution: a safety cava, comprising a cava and an adjusting clamping assembly, the cava comprising a channel wall, a clamping head, a clamping stem and a clamping tail, the number of the cava is two groups, the bottom of the clamping head is welded with a clamping stem, the lower surface of the clamping head is welded with a clamping tail, the sides of the clamping head, the clamping stem and the clamping tail are provided with channel walls, the adjusting clamping assembly comprises an extension mounting shell, a connecting shaft one, a limiting circular plate, a control screw, a moving block, a connecting shaft two, a bushing, a connecting arm and an oil pipe fitting clamping ring, the outer arc surface of the clamping stem is fixedly mounted with the extension mounting shell, the one side of the inner wall of the extension mounting shell is fixedly mounted with the bushing, the side of the bushing is fixedly mounted with the connecting shaft two, the other side of the connecting shaft two is fixedly mounted with the control screw, the surface of the control screw is threadedly connected with the moving block, the bottom end of the moving block is fixedly mounted with a connecting arm, and the bottom end of the connecting arm is fixedly mounted with an oil pipe fitting clamping ring.
[0007] Preferably, the channel walls of the two slips are fitted together to form a safety slip, and the safety slip has an appearance of being larger at the top and smaller at the bottom, and the interior of the safety slip is a cylindrical cavity.
[0008] Preferably, a control screw is attached to the other side of the inner wall of the extended mounting shell.
[0009] Preferably, a circular hole is opened on the outer side of the extended mounting shell, a connecting shaft 1 is rotatably connected to the inside of the circular hole, a control screw is fixedly connected to the side of the connecting shaft 1, a limiting circular plate is fixedly installed on the outer arc surface of the connecting shaft 1, and the inner side of the limiting circular plate is in contact with the extended mounting shell.
[0010] Preferably, moving blocks are attached to both sides of the inner wall of the extended mounting shell.
[0011] Preferably, handles are fixedly mounted on the outer arc surfaces of the two chucks, the two channel walls form a cavity with a diameter of 52 mm, and anti-slip rings are fixedly mounted on the inner arc surfaces of the two chucks.
[0012] Preferably, the two slips are separable. After the two slips are combined, the bottom outer diameter of the two clamp head combinations is 198 mm, the bottom outer diameter of the two clamp tail combinations is 70 mm, the outer diameter of the cylinder composed of the two clamp stems is 179 mm, and the height of the safety slip is 320 mm.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] The safety slip is placed inside the T-shaped tee installed on the blowout preventer to straighten the cut oil pipe, avoiding the problem of difficulty in lowering the original bent and crooked oil pipe due to a large deviation after the composite connector and the pipe hanger are connected, reducing the workload of the staff and the impact on the progress of the project. After the composite connector is connected to the oil pipe, it is placed inside the T-shaped tee installed on the blowout preventer to prevent the oil pipe and the connected composite connector from sliding down. Combined with the two safety slips of the blowout preventer, it can play the role of the third safety slip to avoid the oil pipe from falling into the well in an emergency. In addition, during the construction process, it can prevent the tools and small objects used in the construction from falling into the well. The safety slip formed by the combination of the two slips can be separated, and the composite connector and the pipe hanger are installed on the oil pipe. When lowering the composite connector and the pipe column hanger and other structures connected with the oil pipe, it is convenient to place the safety slips from both sides of the oil pipe inside the T-type tee installed on the blowout preventer. When lowering the composite connector and the pipe column hanger and other structures connected with the oil pipe, it is convenient to remove the safety slips from both sides of the oil pipe. The operation is convenient, and the connecting shaft 2 at the other end of the control screw fixedly connected to the connecting shaft 1 is controlled by two sets of limiting circular plates to rotate inside the sleeve, and during the rotation, the limit formed by the moving block threadedly connected to the surface of the control screw by extending the mounting shell can control the moving block to drive the oil pipe fitting clamping ring at the bottom of the connecting arm to move. The movement of the two sets of adjusting clamping components can form an extended clamping and positioning operation for the oil pipe, so that the fitting length of the safety slips when in contact with the oil pipe during use is extended to avoid bending and not straightening. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;
[0016] Figure 2 For the present invention Figure 1 A schematic diagram of the cross-sectional structure of;
[0017] Figure 3 For the present invention Figure 1 Schematic diagram of the local structure;
[0018] Figure 4 For the present invention Figure 3 Schematic diagram of the structure viewed from above.
[0019] In the figure: 1. Cava; 2. Channel wall; 3. Clamp head; 4. Clamp stem; 5. Clamp tail; 6. Handle; 7. Anti-slip ring; 8. Adjustment clamping assembly; 801. Extension mounting shell; 802. Connecting shaft one; 803. Limiting circular plate; 804. Control screw; 805. Moving block; 806. Connecting shaft two; 807. Bushing; 808. Connecting arm; 809. Oil pipe fitting clamp. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] See also Figure 1-4A safety slip comprises a slip 1 and an adjusting clamping assembly 8. The slip 1 comprises a channel wall 2, a clamp head 3, a clamp stem 4 and a clamp tail 5. The slip 1 is in two groups. The two slips 1 play a blocking and straightening role after being combined. The slip is stuck inside the T-shaped tee installed on the blowout preventer required for lowering the oil pipe and the composite connector connected thereto and the pipe string hanger. After the composite connector is connected to the oil pipe, it is placed inside the T-shaped tee installed on the blowout preventer to block the oil pipe and the composite connector connected thereto from sliding down. Combined with the two safety slips of the blowout preventer, it can play the role of the third safety slip to prevent the oil pipe from falling into the well in an emergency, and straighten the bent and crooked oil pipe released by the oil pipe truck when it is lowered into place. After shearing, it is convenient to install the composite connector. The connector and the tubing hanger and other structures avoid the problem that the composite connector and the tubing hanger to be connected on the oil pipe will deviate greatly after the connection with the original bent and not straight oil pipe, which will cause the composite connector and the tubing hanger to be difficult to lower through the blowout preventer, thereby reducing the workload of the staff and reducing the impact on the progress of the project. A clamping stem 4 is welded at the bottom of the clamp head 3, which plays the role of extending the straightening and fixing. After the two slips 1 are combined, the cylindrical structure composed of the clamping stem 4 has an outer diameter smaller than the inner diameter of the T-type tee installed on the blowout preventer, and can be placed inside the T-type tee installed on the blowout preventer to extend and straighten the oil pipe downward, and prevent the lowered oil pipe from shaking inside the T-type tee installed on the blowout preventer, causing the oil pipe to deviate, etc., affecting The clamping head 3 is placed on the upper inner end of the T-shaped tee installed on the blowout preventer to prevent the safety slip from slipping down. A clamping tail 5 is welded at the bottom of the clamping stem 4. The minimum outer diameter of the assembly composed of the clamping tail 5 is smaller than the outer diameter of the cylinder composed of the clamping stem 4. Before lowering the shearing oil pipe, it is convenient to place the safety slip inside the T-shaped tee installed on the blowout preventer. The channel wall 2 after the two slips 1 are combined can form a cylindrical cavity for lowering the oil pipe. Its diameter is slightly larger than that of the commonly used oil pipe, which is conducive to the vertical movement of the oil pipe. A clamping stem 4 is welded at the bottom of the clamping head 3, and a clamping tail 5 is welded on the lower surface of the clamping head 3. The sides of the clamping head 3, the clamping stem 4 and the clamping tail 5 are provided with a channel wall 2. The adjusting clamping assembly 8 includes an extension mounting shell 801, a connecting shaft 1 802, a limiting circular plate 803, a control screw 804, a moving block 805, a connecting shaft 2 806, a sleeve 807, a connecting arm 808 and an oil pipe fitting clamp ring 809. The outer arc surface of the clamping stem 4 is fixedly mounted with the extension mounting shell 801, a sleeve 807 is fixedly mounted on one side of the inner wall of the extension mounting shell 801, a connecting shaft 2 806 is fixedly mounted on the side of the sleeve 807, and a control screw 804 is fixedly mounted on the other side of the connecting shaft 2 806. The surface of the control screw 804 is threadedly connected with the moving block 805, the bottom end of the moving block 805 is fixedly mounted with a connecting arm 808, and the bottom end of the connecting arm 808 is fixedly mounted with an oil pipe fitting clamp ring 809.The connecting shaft 2 806 at the other end of the control screw 804 fixedly connected to the connecting shaft 1 802 is controlled to rotate inside the shaft sleeve 807 by two sets of limiting circular plates 803, and during the rotation process, the moving block 805 threadedly connected to the surface of the control screw 804 is limited by the extended mounting shell 801, so that the moving block 805 can be controlled to drive the oil pipe fitting clamp 809 at the bottom of the connecting arm 808 to move. The movement of the two sets of adjusting clamping components 8 can form an extended clamping and positioning operation for the oil pipe, so that the fitting length of the safety slip when in contact with the oil pipe is extended during use, avoiding the phenomenon of bending and not straightening.
[0022] Among them, the channel wall 2 of the two slips 1 is fitted together to form a safety slip. The appearance of the safety slip is large at the top and small at the bottom, and the interior of the safety slip is a cylindrical cavity.
[0023] Among them, a control screw 804 is attached to the other side of the inner wall of the extended mounting shell 801.
[0024] Among them, a circular hole is opened on the outer side of the extended mounting shell 801, and a connecting shaft 802 is rotatably connected inside the circular hole. A control screw 804 is fixedly connected to the side of the connecting shaft 802, and a limiting circular plate 803 is fixedly installed on the outer arc surface of the connecting shaft 802. The inner side of the limiting circular plate 803 fits with the extended mounting shell 801.
[0025] Wherein, moving blocks 805 are attached to both sides of the inner wall of the extended mounting shell 801.
[0026] Among them, the outer arc surfaces of the two chucks 3 are fixedly mounted with handles 6, the two channel walls 2 form a cavity with a diameter of 52mm, and the inner arc surfaces of the two chucks 3 are fixedly mounted with anti-slip rings 7.
[0027] Among them; the two slips 1 are separable, and after the two slips 1 are combined, the bottom outer diameter of the combination of the two clamp heads 3 is 198mm, the bottom outer diameter of the combination of the two clamp tails 5 is 70mm, the outer diameter of the cylinder composed of the two clamp stems 4 is 179mm, and the height of the safety slip is 320mm. There are two identical slips 1, and a safety slip can be formed after the two channel walls 2 of the two slips 1 are fitted together. Because the oil pipe released by the tubing car will bend and not straight under the action of force, after the oil pipe is sheared, when the composite connector and the tubing hanger are installed on the sheared oil pipe, the composite connector and the tubing hanger connected to the oil pipe will also be offset, so that the composite connector and the tubing hanger connected to the oil pipe are difficult to be lowered through the blowout preventer. The safety slip can be used to naturally straighten the lowered oil pipe. The safety slip is a key element in the wellbore construction and can be used to secure the wellbore and to prevent the well from slipping off the pipe.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A safety slip, characterized in that: The invention comprises a cava (1) and an adjusting clamping assembly (8), wherein the cava (1) comprises a channel wall (2), a clamping head (3), a clamping stem (4) and a clamping tail (5), wherein the cava (1) is provided in two groups, wherein the clamping stem (4) is welded to the bottom of the clamping head (3), and the clamping tail (5) is welded to the lower surface of the clamping head (3), and the side surfaces of the clamping head (3), the clamping stem (4) and the clamping tail (5) are provided with a channel wall (2), and the adjusting clamping assembly (8) comprises an extended mounting shell (801), a connecting shaft 1 (802), a limiting circular plate (803), a control screw (804), a moving block (805), a connecting shaft 2 (806), a shaft sleeve (807), The connecting arm (808) and the oil pipe fitting retaining ring (809) are fixedly installed on the outer arc surface of the retaining stem (4), and a shaft sleeve (807) is fixedly installed on one side of the inner wall of the extending mounting shell (801), and a connecting shaft 2 (806) is fixedly installed on the side of the shaft sleeve (807), and a control screw (804) is fixedly installed on the other side of the connecting shaft 2 (806), and a moving block (805) is threadedly connected to the surface of the control screw (804), and a connecting arm (808) is fixedly installed on the bottom end of the moving block (805), and an oil pipe fitting retaining ring (809) is fixedly installed on the bottom end of the connecting arm (808).
2. A safety slip according to claim 1, characterized in that: The channel walls (2) of the two slips (1) are fitted together to form a safety slip. The safety slip is larger at the top and smaller at the bottom, and the interior of the safety slip is a cylindrical cavity.
3. A safety slip according to claim 1, characterized in that: A control screw (804) is attached to the other side of the inner wall of the extension mounting shell (801).
4. A safety slip according to claim 1, characterized in that: A circular hole is provided on the outer side of the extension mounting shell (801), a connecting shaft 1 (802) is rotatably connected to the inside of the circular hole, a control screw (804) is fixedly connected to the side of the connecting shaft 1 (802), a limiting circular plate (803) is fixedly installed on the outer arc surface of the connecting shaft 1 (802), and the inner side of the limiting circular plate (803) is in contact with the extension mounting shell (801).
5. The safety slip according to claim 1, characterized in that: Moving blocks (805) are attached to both sides of the inner wall of the extended installation shell (801).
6. The safety slip according to claim 1, characterized in that: A handle (6) is fixedly mounted on the outer arc surface of the two clamps (3); the two channel walls (2) form a cavity with a diameter of 52 mm; and an anti-slip ring (7) is fixedly mounted on the inner arc surface of the two clamps (3).
7. A safety slip according to claim 2, characterized in that: The two slips (1) are separable. After the two slips (1) are combined, the bottom outer diameter of the two clamp heads (3) combined body is 198 mm, the bottom outer diameter of the two clamp tails (5) combined body is 70 mm, the outer diameter of the cylinder formed by the two clamp stems (4) is 179 mm, and the height of the safety slip is 320 mm.