Quick anti-jacking slip

Abstract

A quick anti-jacking slip relates to the technical field of oil field well repair tools and structurally comprises two semi-annular main bodies, one sides of the two main bodies are hinged, the other sides of the two main bodies are fixedly connected through a fastener, the inner sides of the two main bodies form a cylinder after the two main bodies are buckled, the inner sides of the two main bodies are respectively provided with a groove, and the two main bodies are fixedly connected through the fastener. The outer sides of the two main bodies are fixedly connected with main shafts respectively, the main shafts are provided with steel wire rope guide wheels, the steel wire rope guide wheels are matched with the main shafts in a rotating mode, the steel wire rope guide wheels are sleeved with steel wire ropes, the steel wire ropes are further arranged on a wellhead in a sleeved mode at the same time, and under the limiting effect of the steel wire ropes, the direction slips are clamped on the outer wall of the oil pipe. The oil pipe anti-jacking device cannot move upwards, and the direction slip in the oil pipe anti-jacking device is clamped on the outer wall of the oil pipe, so that upward jacking of the oil pipe is limited. According to the invention, timely control can be carried out when the oil pipe is found to move upwards on an oil well overhaul operation site, safety guarantee is provided for next construction, and the workover operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oilfield well repair tools, in particular to a fast anti-top slip. Background Art

[0002] During the process of lifting the tubing string in underground operations, the initial stage of tubing lifting cannot be controlled in time. In serious cases, the tubing may even be blown out of the well, resulting in extended construction period, blowout pollution, endangerment to personal safety, damage to production equipment and other accidents. The existing methods to solve the problem are not convenient and effective enough. Utility Model Content

[0003] In order to solve the problem of control measures for the initial oil pipe top-up, the utility model provides a fast anti-top-up slip, which quickly and effectively solves the oil pipe top-up problem, provides valuable time for the next step of work and treatment measures, ensures the safety of construction, and improves the operation efficiency of the overhaul well.

[0004] The technical solution provided by the utility model is: a fast anti-top-up cava, comprising two semi-annular main bodies, one side of the two main bodies is hingedly connected, the other sides of the two main bodies are fixedly connected by fasteners, the inner sides of the two main bodies after being buckled together form a cylinder, the inner sides of the two main bodies are respectively provided with grooves, and direction cava are respectively installed in the grooves, the direction cava is stuck on the outer wall of the oil pipe, the outer sides of the two main bodies are respectively fixedly connected with main shafts, the main shaft is provided with a wire rope guide wheel, the wire rope guide wheel is matched with the main shaft for rotation, a wire rope is sleeved on the wire rope guide wheel, and the wire rope is also sleeved on the wellhead at the same time. Under the limiting effect of the wire rope, the present invention cannot produce upward displacement, and the direction cava inside the present invention is stuck on the outer wall of the oil pipe, thereby limiting the top-up of the oil pipe.

[0005] A further technical solution is: the groove is a dovetail groove that runs through the length direction of the main body, the direction cava is inserted into the dovetail groove, the cross-section of the direction cava is adapted to the cross-section of the dovetail groove, an upper limit block is provided in the dovetail groove above the direction cava, the upper limit block limits the upward movement of the direction cava, the upper limit block is connected to the main body by a fixing pin, so that the upper limit block is fixedly connected to the main body, a lower limit block is provided in the dovetail groove below the direction cava, the lower limit block limits the downward movement of the direction cava, the lower limit block is connected to the main body by a positioning screw, after the positioning screw is removed, the lower limit block can be removed, and then the direction cava can be removed.

[0006] A further technical solution is: the upper limit block is welded to the main body to increase the reliability of the connection between the upper limit block and the main body, thereby increasing the reliability of the upper limit block for the upward limit of the direction slip.

[0007] A further technical solution is: a shaft sleeve is arranged between the wire rope guide wheel and the main shaft to improve the flexibility of the wire rope guide wheel in rotation.

[0008] A further technical solution is: the main shaft has an axial blind hole and a radial hole, the axial blind hole and the radial hole are connected to form a lubricating oil channel, the outer wall of the main shaft has an annular groove, the annular groove is connected to the lubricating oil channel, so that the lubricating oil can enter the gap between the main shaft and the sleeve, and the inner thread of the axial blind hole is connected with a refueling hole plug.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. This application can timely control the movement of the oil pipe when it is found at the oil well overhaul site, providing safety guarantee for the next construction, solving the difficulties of well repair operations and improving the efficiency of well repair operations.

[0011] 2. This application has the advantages of small size, strong clamping force, high efficiency, simple operation and convenient use in well repair construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 It is a top view of the utility model.

[0014] Figure 3 It is the front view of a main body in this novel.

[0015] Figure 4 yes Figure 3 View in the AA direction.

[0016] In the figure: 1. upper limit block; 2. fixing pin; 3. oil filling hole plug; 4. lower limit block; 5. positioning screw; 6. wire rope guide wheel; 7. main body; 8. main shaft; 9. direction slip; 10. bolt; 11. bushing; 12. nut; 13. dovetail groove. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] like Figure 1-4As shown, the utility model includes two semi-annular main bodies 7, one side of the two main bodies 7 is hingedly connected, and the other side of the two main bodies 7 is fixedly connected by fasteners. The fasteners described in this embodiment are bolts 10 and nuts 12. The inner sides of the two main bodies 7 after being buckled together form a cylinder. The inner sides of the two main bodies 7 are respectively provided with grooves, and direction slips 9 are respectively installed in the grooves. The direction slips 9 protrude from the inner sides of the main bodies 7. After the two main bodies 7 are buckled together, the direction slips 9 are stuck on the outer wall of the oil pipe, thereby limiting the upward movement of the oil pipe relative to the direction slips 9. The outer sides of the two main bodies 7 are respectively fixedly connected with main shafts 8, and wire rope guide wheels 6 are arranged on the main shafts 8. The wire rope guide wheels 6 are rotatably matched with the main shafts 8. The wire rope guide wheels 6 are sleeved with wire ropes, and the wire ropes are also sleeved on the wellhead at the same time. Since the wellhead is fixed, the present invention cannot produce upward displacement under the limiting effect of the wire rope, and the direction slips 9 inside the present invention are stuck on the outer wall of the oil pipe, thereby limiting the upward push of the oil pipe.

[0019] The groove is a dovetail groove 13 that runs through the length direction of the main body 7. The direction slip 9 is inserted into the dovetail groove 13. The cross section of the direction slip 9 is adapted to the cross section of the dovetail groove 13. An upper limit block 1 is provided in the dovetail groove 13 above the direction slip 9. The upper limit block 1 is used to limit the upward movement of the direction slip 9. The upper limit block 1 is connected to the main body 7 by a fixing pin 2, so that the upper limit block 1 is fixedly connected to the main body 7. A lower limit block 4 is provided in the dovetail groove 13 below the direction slip 9. The lower limit block 4 is used to limit the downward movement of the direction slip 9. The lower limit block 4 is connected to the main body 7 by a positioning screw 5. After the positioning screw 5 is removed, the lower limit block 4 can be removed, and then the direction slip 9 can be removed.

[0020] The upper limit block 1 is welded to the main body 7 to increase the reliability of the connection between the upper limit block 1 and the main body 7, thereby increasing the reliability of the upper limit block 1 in limiting the upward movement of the direction slip 9.

[0021] A shaft sleeve 11 is provided between the wire rope guide wheel 6 and the main shaft 8 to enhance the rotation flexibility of the wire rope guide wheel 6 .

[0022] The main shaft 8 has an axial blind hole and a radial hole, which are connected to form a lubricating oil passage. The outer wall of the main shaft 8 has an annular groove, which is connected to the lubricating oil passage, so that the lubricating oil can enter the gap between the main shaft 8 and the sleeve 11, providing lubricant for the rotational cooperation between the main shaft 8 and the sleeve 11. The inner thread of the axial blind hole is connected to a refueling hole plug 3.

Claims

1. A fast anti-top slip, characterized by: The invention comprises two semi-circular main bodies (7), one side of the two main bodies (7) is hingedly connected, the other side of the two main bodies (7) is fixedly connected by a fastener, the inner sides of the two main bodies (7) after being buckled together form a cylinder, the inner sides of the two main bodies (7) are respectively provided with grooves, and the grooves are respectively provided with direction slips (9), the outer sides of the two main bodies (7) are respectively fixedly connected with main shafts (8), the main shafts (8) are provided with wire rope guide wheels (6), and the wire rope guide wheels (6) are rotatably matched with the main shafts (8).

2. The fast anti-top slip according to claim 1, characterized in that: The groove is a dovetail groove (13) that runs through the length direction of the main body (7), the direction cava (9) is inserted into the dovetail groove (13), the cross section of the direction cava (9) is matched with the cross section of the dovetail groove (13), an upper limit block (1) is arranged in the dovetail groove (13) above the direction cava (9), the upper limit block (1) and the main body (7) are connected by a fixing pin (2), and a lower limit block (4) is arranged in the dovetail groove (13) below the direction cava (9), and the lower limit block (4) and the main body (7) are connected by a positioning screw (5).

3. The fast anti-top slip according to claim 2, characterized in that: The upper limit block (1) is connected to the main body (7) by welding.

4. The fast anti-top slip according to claim 1, characterized in that: A shaft sleeve (11) is provided between the wire rope guide wheel (6) and the main shaft (8) to enhance the rotation flexibility of the wire rope guide wheel (6).

5. The fast anti-top slip according to claim 4, characterized in that: The main shaft (8) has an axial blind hole and a radial hole, the axial blind hole and the radial hole are connected to form a lubricating oil passage, the outer wall of the main shaft (8) has an annular groove, the annular groove is connected to the lubricating oil passage, so that the lubricating oil can enter the gap between the main shaft (8) and the shaft sleeve (11), and the inner thread of the axial blind hole is connected to a filler hole plug (3).

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