Cutting and fishing integrated tool

Abstract

The utility model discloses a cutting and fishing integrated tool. Comprising a fishing tool and a cutting tool, and the fishing tool comprises a first pipe body; the plurality of circulating holes are uniformly distributed in the middle upper part of the first pipe body along the circumferential direction; the sliding sleeve pins are uniformly distributed on the first pipe body in the circumferential direction; the first openings are uniformly formed in the first pipe body in the circumferential direction; the barrel-shaped slip is arranged in the first pipe body; the barrel-shaped slip is composed of a plurality of elastic slip blocks, and the bottoms of the elastic slip blocks are connected. The plurality of elastic slip blocks are in one-to-one correspondence with the plurality of first openings; the sliding sleeve is fixed in the first pipe body through the sliding sleeve pin; and a plurality of convex keys and grooves which are arranged at intervals are arranged at the lower part of the periphery of the sliding sleeve. The beneficial effects of the utility model are that: not only can the accurate cutting be realized, but also the cutting and fishing can be accomplished at one time or the independent cutting operation can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe salvaging, in particular to a cutting and salvaging integrated tool. Background Art

[0002] For conventional offshore oil and gas wells that are complex in terms of completion, salvage operations, and workover and overhaul operations, it is crucial to quickly handle the tubing to be salvaged and resume oil and gas well production as soon as possible.

[0003] In the prior art, the integrated cutting and catching tool is a combination of a hydraulic cutting tool and an inverted catching spear. Although the cutting and catching can be completed in one trip, it is impossible to achieve cutting at a precise cutting point due to the inverted catching spear.

[0004] Therefore, an integrated cutting and salvaging tool that can not only cut accurately but also complete the cutting and salvaging operations in one go becomes the key to solving the problem. Utility Model Content

[0005] The utility model aims to provide an integrated cutting and salvaging tool, which is provided with a salvaging tool and a cutting tool, and can not only achieve precise cutting, but also complete the cutting and salvaging operation in one go or a single cutting operation.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution, including: a salvage tool and a cutting tool connected in sequence from top to bottom, the salvage tool includes:

[0007] A first tube body, the upper end and the lower end of which are respectively provided with a first upper joint and a first lower joint;

[0008] A plurality of circulation holes are evenly distributed in the circumferential direction in the upper middle portion of the first tube body;

[0009] A plurality of sliding sleeve pins, which are evenly distributed on the first tube body along the circumferential direction and are located above the circulation hole;

[0010] A plurality of first openings, which are evenly distributed on the first tube body along the circumferential direction and are located below the circulation hole, and are used for the barrel-shaped slips to extend out after radial expansion;

[0011] A barrel-shaped slip is arranged in the first tube and located at the first opening; the barrel-shaped slip is composed of a plurality of elastic slip blocks, the bottoms of the plurality of elastic slip blocks are connected; the plurality of elastic slip blocks correspond to the plurality of first openings one by one;

[0012] A sliding sleeve, which is fixed in the first tube body by the sliding sleeve pin; a plurality of convex keys and grooves are arranged at intervals at the lower part of the outer periphery of the sliding sleeve;

[0013] Among them, after throwing the ball, the sleeve pin is sheared, the sleeve slides down into the barrel-shaped slip, the convex key causes the elastic slip block to expand radially, and the elastic slip block engages with the inner wall of the pipe column to be salvaged; when it is necessary to release the pipe, the sleeve rotates after the first pipe body is rotated, the groove avoids the elastic slip block, and the elastic slip block contracts radially to achieve release.

[0014] Preferably, a plurality of arc-shaped bevel teeth for increasing the bite force are provided on the outer periphery of the elastic slip block.

[0015] Preferably, a wedge-shaped surface is provided on the upper inner circumference of the elastic slip block, and a guide sleeve is provided on the lower end of the sliding sleeve.

[0016] Preferably, a first sealing ring and a second sealing ring are provided on the outer periphery of the sliding sleeve, and when the sliding sleeve pin is not sheared, the first sealing ring is located above the circulation hole, and the second sealing ring is located below the circulation hole.

[0017] Preferably, the cutting tool comprises:

[0018] The second tube body has a second upper joint and a second lower joint at its upper end and lower end respectively; a plurality of second openings are evenly distributed along the circumference at the middle and lower part of the second tube body; the second upper joint is connected to the first lower joint;

[0019] A plurality of cutting blades, which correspond to the second openings one by one, and the middle parts of the cutting blades are hinged at the second openings;

[0020] A piston seat is disposed in the second tube body and located above the second opening; a first valve hole is provided at the center of the piston seat;

[0021] The piston is composed of a plug body, a plug rod and a slider which are connected in sequence from bottom to top; the plug body is located below the piston seat and is matched with the piston seat; the lower end of the plug rod is connected to the plug body and extends upward through the first valve hole; the slider is connected to the upper end of the plug rod, and the outer periphery of the slider is matched with the inner periphery of the second tube body; a through hole is provided in the center of the piston; the piston is used to move downward under the action of high-pressure liquid, press the inner end of the cutting blade, and make the cutting blade open to cut the external pipe column;

[0022] The first spring is sleeved on the plug rod, and its two ends are respectively in contact with the slider and the piston seat.

[0023] Preferably, a plurality of first flow holes are evenly distributed on the slider.

[0024] Preferably, a one-way flow control tool is connected to the lower part of the cutting tool.

[0025] Preferably, the one-way flow control means comprises:

[0026] A third pipe body, the upper end and the lower end of which are respectively provided with a third upper joint and a third lower joint; the third upper joint is connected to the second lower joint;

[0027] A valve seat, which is arranged in the middle and upper part of the inner cavity of the third tube body, and a second valve hole is arranged in the center of the valve seat;

[0028] A guide seat, which is arranged at the middle and lower part of the inner cavity of the third tube body, and a guide hole is provided at the center of the guide seat;

[0029] a valve stem extending upward through the guide hole;

[0030] A valve core, which is arranged at the upper end of the valve stem and matches the valve seat, and is used to open or close the second valve hole;

[0031] The second spring is sleeved on the valve stem, and its two ends are respectively in contact with the valve core and the guide seat.

[0032] Preferably, a plurality of second flow holes are evenly distributed on the guide seat.

[0033] The beneficial effects of the utility model are: it is provided with a salvaging tool and a cutting tool, which can not only achieve accurate cutting, but also can achieve cutting and salvaging in one go or a single cutting operation. A plurality of convex keys and grooves are provided at intervals at the lower part of the outer circumference of the sliding sleeve; when it is necessary to release the hand, the sliding sleeve rotates after the first tube body is rotated, and the groove avoids the elastic slip block, and the elastic slip block contracts radially to achieve release. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a cross-sectional view of a cutting and salvaging integrated tool of the utility model in a normal state.

[0035] Figure 2 It is a cross-sectional view of a cutting and salvaging integrated tool of the utility model in a cutting state.

[0036] Figure 3 It is a cross-sectional view of a cutting and salvaging integrated tool of the utility model in a recovery state.

[0037] Figure 4 It is a cross-sectional view of a cutting and salvaging integrated tool of the utility model in a state of being out of hand.

[0038] Figure 5 for Figure 3 AA section view.

[0039] Figure 6 for Figure 4 BB cross-sectional view.

[0040] Figure 7 It is a cross-sectional view of the salvage tool in the utility model.

[0041] Figure 8 It is a cross-sectional view of the cutting tool in the utility model.

[0042] Fig. 9 It is a cross-sectional view of the one-way flow control tool in the present utility model. DETAILED DESCRIPTION

[0043] The utility model is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0044] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or other elements or combinations thereof.

[0045] like Figure 1-9 As shown, a cutting and salvaging integrated tool 1 of the utility model comprises a salvaging tool 100 and a cutting tool 200 connected in sequence from top to bottom, wherein the salvaging tool 100 comprises:

[0046] The upper end and the lower end of the first tube body 110 are respectively provided with a first upper joint 114 and a first lower joint 115; a plurality of circulation holes 111 are evenly arranged in the circumferential direction at the middle and upper part of the first tube body 110; a plurality of sliding sleeve pins 112 are evenly arranged in the circumferential direction on the first tube body 110 and are located above the circulation holes 111; a plurality of first openings 113 are evenly arranged in the circumferential direction on the first tube body 110 and are located below the circulation holes 111, for the barrel-shaped slips 120 to extend after radial expansion. As a preferred embodiment, the plurality of first openings 113 are 4.

[0047] The barrel-shaped slip 120 is disposed in the first tube body 110 and is located at the first opening 113; the barrel-shaped slip 120 is composed of a plurality of elastic slip blocks 121, the bottoms of the plurality of elastic slip blocks 121 are connected; the plurality of elastic slip blocks 121 correspond to the plurality of first openings 113 one by one. As a preferred embodiment, a plurality of arc-shaped bevel teeth 122 for increasing the bite force are provided on the outer circumference of the elastic slip block 121. As a further preferred embodiment, a wedge-shaped surface 123 is provided on the upper inner circumference of the elastic slip block 121.

[0048] The sliding sleeve 130 is fixed in the first tube body 110 by the sliding sleeve pin 112; a plurality of spaced convex keys 131 and grooves 132 are provided at the lower part of the outer periphery of the sliding sleeve 130. As a preferred embodiment, a guide cylinder 133 is provided at the lower end of the sliding sleeve 130. As a preferred embodiment, a first sealing ring 134 and a second sealing ring 135 are provided on the outer periphery of the sliding sleeve 130. When the sliding sleeve pin 112 is not sheared, the first sealing ring 134 is located above the circulation hole 111, and the second sealing ring 135 is located below the circulation hole 111.

[0049] Among them, after throwing the ball 2, the sliding sleeve pin 112 is sheared, the sliding sleeve 130 slides down into the barrel-shaped slip 120, and the convex key 131 causes the elastic slip block 121 to expand radially, and the elastic slip block 121 engages with the inner wall of the pipe column to be salvaged; when it is necessary to release the hand, the sliding sleeve 130 rotates after the first tube body 110 is rotated, and the groove 132 avoids the elastic slip block 121, and the elastic slip block 121 contracts radially to achieve release.

[0050] As a preferred embodiment, the cutting tool 200 comprises: a second tube body 210, wherein the upper end and the lower end of the second tube body 210 are respectively provided with a second upper joint 211 and a second lower joint 212; a plurality of second openings 213 are evenly distributed along the circumference in the middle and lower part of the second tube body 210; the second upper joint 212 is connected to the first lower joint 115; a plurality of cutting blades 220 correspond to the second openings 213 one by one, and the middle parts of the cutting blades 220 are respectively hinged at the second openings 213; a piston seat 230 is arranged in the second tube body 210 and is located above the second opening 213; a first valve hole is provided in the center of the piston seat 230; a plug body 241, a plug rod 242 and a piston 240 are connected in sequence from bottom to top. The piston 241 is composed of a slider 243; the plug body 241 is located below the piston seat 230 and is matched with the piston seat 230; the lower end of the plug rod 242 is connected to the plug body 241 and extends upward through the first valve hole; the slider 243 is connected to the upper end of the plug rod 242, and the outer periphery of the slider 243 is matched with the inner periphery of the second tube body 210; a through hole 240a is provided in the center of the piston 241; the piston 240 is used to move downward under the action of high-pressure liquid, press the inner end of the cutting blade 220, so that the cutting blade 220 opens to cut the external pipe column; the first spring 250 is sleeved on the plug rod 242, and the two ends are respectively abutted against the slider 243 and the piston seat 230.

[0051] As a further preferred embodiment, a one-way flow control tool 300 is connected to the lower part of the cutting tool 200. The one-way flow control tool 300 comprises: a third upper joint 311 and a third lower joint 312 are respectively provided at the upper and lower ends of the third tube body 310; the third upper joint 311 is connected to the second lower joint 212; a valve seat 320 is arranged in the middle and upper part of the inner cavity of the third tube body 310, and a second valve hole is provided at the center of the valve seat 320; a guide seat 330 is arranged in the middle and lower part of the inner cavity of the third tube body 310, and a guide hole is provided at the center of the guide seat 330; a valve stem 340 extends upward through the guide hole; a valve core 350 is arranged at the upper end of the valve stem 340 and is adapted to the valve seat 320 for opening or closing the second valve hole; a second spring 360 is sleeved on the valve stem 340, and its two ends are respectively in contact with the valve core 350 and the guide seat 330.

[0052] During use, a cutting and fishing integrated tool 1 is first lowered into the pipe string to be recovered. Figure 1 When cutting is required, the water pump is turned on to inject high-pressure water into the integrated cutting and salvaging tool 1. The piston 240 moves downward under the action of the water flow, pressing the inner end of the cutting blade 220 to open the cutting blade 220. At the same time, the valve core 350 of the one-way flow control tool 300 moves downward, and the second valve hole opens. The integrated cutting and salvaging tool rotates driven by the upper rotating mechanism to achieve cutting. Figure 2 After the cutting is completed, the recovery ball 2 is put into the integrated cutting and salvaging tool 1, and the recovery ball 2 and the sleeve 130 are sealed, so that the sleeve pin 112 is sheared, and the sleeve 130 slides down into the barrel-shaped slip 120, and the convex key 131 causes the elastic slip block 121 to expand radially, and the elastic slip block 121 bites with the inner wall of the pipe string to be salvaged. Figure 3 When it is necessary to release the hand, the sleeve 130 rotates after the first tube body 110 rotates accordingly, and the groove 132 avoids the elastic card block 121, and the elastic card block 121 contracts radially to achieve release, such as Figure 4 .

[0053] In another embodiment, a plurality of arc-shaped bevel teeth 122 for increasing the bite force are provided on the outer periphery of the elastic slip block 121 .

[0054] In another embodiment, a wedge-shaped surface 123 is provided on the upper inner circumference of the elastic slip block 121 , and a guide sleeve 133 is provided on the lower end of the sliding sleeve 130 .

[0055] In another embodiment, a first sealing ring 134 and a second sealing ring 135 are provided on the outer periphery of the sliding sleeve 130 , and when the sliding sleeve pin 112 is not sheared, the first sealing ring 134 is located above the circulation hole 111 , and the second sealing ring 135 is located below the circulation hole 111 .

[0056] In another embodiment, the cutting tool 200 includes: a second upper joint 211 and a second lower joint 212 are respectively provided at the upper and lower ends of a second tube body 210; a plurality of second openings 213 are evenly distributed along the circumference at the middle and lower part of the second tube body 210; the second upper joint 212 is connected to the first lower joint 115; a plurality of cutting blades 220 correspond to the second openings 213 one by one, and the middle parts of the cutting blades 220 are respectively hinged at the second openings 213; a piston seat 230 is arranged in the second tube body 210 and is located above the second opening 213; a first valve hole is provided at the center of the piston seat 230; a plug body 241, a plug rod 242 and a piston 240 are connected in sequence from bottom to top The piston 241 is composed of a slider 243; the plug body 241 is located below the piston seat 230 and is matched with the piston seat 230; the lower end of the plug rod 242 is connected to the plug body 241 and extends upward through the first valve hole; the slider 243 is connected to the upper end of the plug rod 242, and the outer periphery of the slider 243 is matched with the inner periphery of the second tube body 210; a through hole 240a is provided in the center of the piston 241; the piston 240 is used to move downward under the action of high-pressure liquid, press the inner end of the cutting blade 220, so that the cutting blade 220 opens to cut the external pipe column; the first spring 250 is sleeved on the plug rod 242, and the two ends are respectively abutted against the slider 243 and the piston seat 230.

[0057] In another embodiment, a plurality of first flow holes 243 a are evenly distributed on the slider 243 .

[0058] In another embodiment, a one-way flow control tool 300 is connected to the lower portion of the cutting tool 200 .

[0059] In another embodiment, the one-way flow control tool 300 includes: a third tube body 310, whose upper and lower ends are respectively provided with a third upper joint 311 and a third lower joint 312; the third upper joint 311 is connected to the second lower joint 212; a valve seat 320 is arranged in the middle and upper part of the inner cavity of the third tube body 310, and a second valve hole is provided in the center of the valve seat 320; a guide seat 330 is arranged in the middle and lower part of the inner cavity of the third tube body 310, and a guide hole is provided in the center of the guide seat 330; a valve stem 340 extends upward through the guide hole; a valve core 350 is arranged at the upper end of the valve stem 340 and is adapted to the valve seat 320 for opening or closing the second valve hole; a second spring 360 is sleeved on the valve stem, and its two ends are respectively abutted against the valve core 350 and the guide seat 330.

[0060] In another embodiment, a plurality of second flow holes 331 are evenly distributed on the guide seat 330 .

[0061] In summary, the utility model provides a cutting and salvaging integrated tool 1, which is provided with a salvaging tool 100 and a cutting tool 200, and can not only achieve precise cutting, but also can achieve cutting and salvaging in one operation or a single cutting operation. A plurality of spaced convex keys 131 and grooves 132 are provided at the lower part of the outer circumference of the sliding sleeve 130; when it is necessary to release the hand, the sliding sleeve 130 rotates with the first tube body 110, and the groove 132 avoids the elastic slip block 121, and the elastic slip block 121 contracts radially to achieve release.

[0062] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cutting and salvaging integrated tool, comprising a salvaging tool and a cutting tool connected in sequence from top to bottom, characterized in that: The salvage tool comprises: A first tube body, the upper end and the lower end of which are respectively provided with a first upper joint and a first lower joint; A plurality of circulation holes are evenly distributed in the circumferential direction in the upper middle portion of the first tube body; A plurality of sliding sleeve pins, which are evenly distributed on the first tube body along the circumferential direction and are located above the circulation hole; A plurality of first openings, which are evenly distributed on the first tube body along the circumferential direction and are located below the circulation hole, and are used for the barrel-shaped slips to extend out after radial expansion; A barrel-shaped slip is arranged in the first tube and located at the first opening; the barrel-shaped slip is composed of a plurality of elastic slip blocks, the bottoms of the plurality of elastic slip blocks are connected; the plurality of elastic slip blocks correspond to the plurality of first openings one by one; A sliding sleeve, which is fixed in the first tube body by the sliding sleeve pin; a plurality of convex keys and grooves are arranged at intervals at the lower part of the outer periphery of the sliding sleeve; Among them, after throwing the ball, the sleeve pin is sheared, the sleeve slides down into the barrel-shaped slip, the convex key causes the elastic slip block to expand radially, and the elastic slip block engages with the inner wall of the pipe column to be salvaged; when it is necessary to release the pipe, the sleeve rotates after the first pipe body is rotated, the groove avoids the elastic slip block, and the elastic slip block contracts radially to achieve release.

2. The integrated cutting and salvaging tool according to claim 1, characterized in that: A plurality of arc-shaped bevel teeth for increasing the bite force are arranged on the outer periphery of the elastic slip block.

3. The integrated cutting and salvaging tool according to claim 1, characterized in that: A wedge-shaped surface is arranged on the upper inner circumference of the elastic slip block, and a guide cylinder is arranged on the lower end of the sliding sleeve.

4. The integrated cutting and salvaging tool according to claim 1, characterized in that: A first sealing ring and a second sealing ring are provided on the outer periphery of the sliding sleeve. When the sliding sleeve pin is not sheared, the first sealing ring is located above the circulation hole, and the second sealing ring is located below the circulation hole.

5. The integrated cutting and salvaging tool according to claim 1, characterized in that: The cutting tool comprises: The second tube body has a second upper joint and a second lower joint at its upper end and lower end respectively; a plurality of second openings are evenly distributed along the circumference at the middle and lower part of the second tube body; the second upper joint is connected to the first lower joint; A plurality of cutting blades, which correspond to the second openings one by one, and the middle parts of the cutting blades are hinged at the second openings; A piston seat is disposed in the second tube body and located above the second opening; a first valve hole is provided at the center of the piston seat; The piston is composed of a plug body, a plug rod and a slider which are connected in sequence from bottom to top; the plug body is located below the piston seat and is matched with the piston seat; the lower end of the plug rod is connected to the plug body and extends upward through the first valve hole; the slider is connected to the upper end of the plug rod, and the outer periphery of the slider is matched with the inner periphery of the second tube body; a through hole is provided in the center of the piston; the piston is used to move downward under the action of high-pressure liquid, press the inner end of the cutting blade, and make the cutting blade open to cut the external pipe column; The first spring is sleeved on the plug rod, and its two ends are respectively in contact with the slider and the piston seat.

6. The integrated cutting and salvaging tool according to claim 5, characterized in that: A plurality of first flow holes are evenly distributed on the slider.

7. The integrated cutting and salvaging tool according to claim 5, characterized in that: A one-way flow control tool is connected to the lower part of the cutting tool.

8. The integrated cutting and salvaging tool according to claim 7, characterized in that: The one-way flow control tool comprises: A third pipe body, the upper end and the lower end of which are respectively provided with a third upper joint and a third lower joint; the third upper joint is connected to the second lower joint; A valve seat, which is arranged in the middle and upper part of the inner cavity of the third tube body, and a second valve hole is arranged in the center of the valve seat; A guide seat, which is arranged at the middle and lower part of the inner cavity of the third tube body, and a guide hole is provided at the center of the guide seat; a valve stem extending upward through the guide hole; A valve core, which is arranged at the upper end of the valve stem and matches the valve seat, and is used to open or close the second valve hole; The second spring is sleeved on the valve stem, and its two ends are respectively in contact with the valve core and the guide seat.

9. The integrated cutting and salvaging tool according to claim 8, characterized in that: A plurality of second flow holes are evenly distributed on the guide seat.

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