High-strength drill pipe based on anti-grip biting for offshore oil exploitation

Abstract

The application discloses a high-strength drill pipe for preventing slip bite during offshore oil exploitation, which comprises a first drill pipe, a mounting column fixedly arranged at the center of the top end of the first drill pipe, a mounting screw hole formed at the top end of the mounting column, a mounting screw rod threadedly connected to the mounting screw hole, a connecting disc fixedly connected to the top end of the mounting screw rod, and four mounting connecting plates fixedly arranged on the outer wall of the connecting disc.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil exploitation, in particular to a high-strength drill pipe based on marine oil exploitation for preventing slip bite. BACKGROUND

[0002] Oil exploitation refers to the behavior of excavating and extracting oil in places where oil is stored. Drilling engineering plays a very important role in oil and gas field development. It should be ensured that the drilled well has minimal pollution to the oil and gas layer, high cementing quality, and can withstand various downhole operations for decades. Improving drilling technology and management and increasing drilling speed are the key to reducing drilling costs. Oil production engineering is the process technology of lifting oil and gas from the bottom of the well to the wellhead. During drilling, the oil drill pipe is one of the more important core components. It is mainly used to connect the tail threaded steel pipe of the drilling machine to the surface equipment device, which can transport drilling mud to the drill bit and synchronize the lifting of the drill bit.

[0003] The drill pipe on the market today:

[0004] (1) During oil exploitation, the high-strength work is easily bitten by the slip used for oil exploitation, which causes the drill pipe to be scrapped. The drill pipe also needs to be taken out from the deep oil field and replaced, which affects the efficiency of oil exploitation.

[0005] (2) The connection structure between the drill pipe and the slip is easily vibrated during the high-strength exploitation process, which easily causes the drill pipe and the connection structure to shift, affecting the use of the drill pipe.

[0006] In response to this, Chinese Patent No. CN201822233899.8 proposes an oil drill pipe. By providing an oil drill pipe, when connected to each other, it can be quickly and accurately connected. The mutual misalignment of the limit block and the limit groove reduces the possibility of slippage after the two oil drill pipes are connected, thereby improving the reliability of the connection. Chinese Patent No. CN201922401163.1 proposes an oil drill pipe. A first casing and a second casing are respectively arranged on the spring seat and the tray. The second casing is slidably arranged in the first casing. A multi-layer sealing ring is provided between the first casing and the second casing. The drill pipe spring is surrounded and protected by the first casing and the second casing to prevent the drill pipe spring from aging or damage after repeated use of the oil drill pipe, thereby increasing the service life of the oil drill pipe. Chinese Patent No. CN201710977316.X proposes a flexible drill pipe for directional drilling and provides a flexible drill pipe for directional drilling, which belongs to the field of drilling tools for exploration, including a flexible drill pipe body, one end of the flexible drill pipe body is fixed with an internal threaded joint the flexible drill pipe body is provided with an internal threaded joint slope, and the internal threaded joint slope shoulder angle α of the internal threaded joint slope is 13°~15°; the external threaded joint is provided with an external threaded joint slope at the joint of the flexible drill pipe body, and the external threaded joint slope shoulder angle β of the external threaded joint slope is 15°~18°; the flexible drill pipe body is provided with a pipe body thickening section at both ends connected to the internal threaded joint and the external threaded joint; the device can effectively reduce the friction resistance suffered by the drill pipe during the crossing process, reduce the stress concentration at the thickening of the drill pipe body and the transition part of the joint, improve the ability of the drill pipe to withstand bending moment and fatigue crack resistance during the crossing construction, extend the service life of the drill pipe, and enhance the safety and reliability of the crossing construction. However, in the above patents, no structure is designed to prevent the slips from biting the drill pipe during the oil extraction process, and the connection structure between the drill pipe and the slips is prone to large vibration during high-intensity extraction, which can easily cause the drill pipe and the connection structure to shift, affecting the use of the drill pipe.

[0007] Therefore, we propose a high-strength drill pipe that is resistant to slip bite based on offshore oil development in order to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a high-strength drill pipe that is resistant to slip bites for offshore oil production, so as to solve the problems raised in the above-mentioned background technology that the existing drill pipe is easily compressed and bitten by the slips used for oil production due to the high-intensity work during production, and the drill pipe and the connecting structure are easily displaced, affecting the use of the drill pipe.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-strength drill pipe for preventing slip bite based on offshore oil development, comprising a first drill pipe tube, a mounting column fixedly installed at the center of the top end of the first drill pipe tube, a mounting screw hole provided at the top end of the mounting column, a mounting screw connected to the internal thread of the mounting screw hole, a connecting disc fixedly connected to the top end of the mounting screw, four mounting connecting plates fixedly provided on the outer wall of the connecting disc, a connecting collar fixedly connected to the ends of the four mounting connecting plates away from the connecting disc, four limiting partitions fixedly provided at the bottom of the connecting disc, an elastic pad fixedly provided on one side of each limiting partition, and each elastic pad fixedly provided with a mounting The columns are in contact with each other, and two connecting blocks are fixedly provided on the other side of each of the limiting partitions, and a connecting shaft is inserted and connected between every two adjacent connecting blocks, and a fixing ring is sleeved at the center of the outer surface of each connecting shaft, and one side of each fixing ring is fixedly connected to a supporting connecting plate, and one side of each supporting connecting plate is provided with a limiting screw hole, and four fixed partitions are fixed on the inner wall of the connecting ring, and each fixed partition is threadedly connected to a limiting bolt between the supporting connecting plate. The bottom end of the first drill pipe is fixedly connected to the second drill pipe, and a drill bit is fixedly installed on the bottom end of the second drill pipe. A water distribution plate is fixed at the edge of the outer surface of the first drill pipe.

[0010] Preferably, a connecting through groove is provided on the top of the outer surface of the connecting collar, and a plurality of engaging through holes are evenly provided on the outer surface of the connecting collar.

[0011] Preferably, three sides of the first drill pipe are fixed with limiting connecting plates.

[0012] Preferably, a limiting sliding groove is provided on the top of each of the limiting connecting plates, and a limiting sliding block is slidably connected between the inner walls of each of the limiting sliding grooves.

[0013] Preferably, each of the limit sliding blocks is connected to the limit sliding groove located opposite thereto via a limit spring, and one side of each of the limit sliding blocks is fixedly connected to a connecting cross bar.

[0014] Preferably, one end of each connecting cross bar is fixedly connected to an arc-shaped limiting plate, and each of the arc-shaped limiting plates is in contact with the inner wall of the connecting collar.

[0015] Preferably, a connecting vertical plate is fixedly connected to the edge of the top end of each limiting sliding block.

[0016] Preferably, two connecting pin holes are provided at the edge of the top end of each of the position-limiting connecting plates, and a connecting bolt is inserted and connected inside each of the connecting pin holes.

[0017] Preferably, the top end of each two adjacent connecting post is fixedly connected with a limiting hook plate, one side of the top end of each limiting hook plate is provided with a through slot, each connecting vertical plate is connected with the through slot opposite thereto, and the other side of the top end of each connecting vertical plate is fixedly provided with a pull handle.

[0018] Compared with the prior art, the beneficial effects of the high-strength drill pipe for preventing slip bite during offshore oil exploitation are as follows:

[0019] (1) When the connecting ring is deformed or damaged after high-strength work, the slip is separated from the connecting ring. The arc-shaped limiting plate can be reset, the limiting hook plate is moved downward, the limiting hook plate is connected with the connecting vertical plate, then the limiting bolt is rotated and removed, the supporting plate is turned to the vertical direction, then the connecting disc is rotated to separate the connecting disc from the mounting column, then the new connecting ring is taken out, the connecting disc is rotated, the mounting screw at the bottom end of the connecting disc is screwed with the mounting column, then the limiting hook plate is pulled upward by the pull handle, the connecting vertical plate is lost of limitation, the limiting slider is displaced under the pushing of the limiting spring, the arc-shaped limiting plate is clamped with the inner wall of the connecting ring through the connecting cross bar of the limiting slider, the supporting plate is turned to be opposite to the fixed partition plate, the limiting is performed through the limiting bolt, then the new connecting ring and the slip are installed and fixed, so that the oil exploitation is facilitated, the drill pipe does not need to be taken out, and the exploitation efficiency is higher.

[0020] (2) The limiting hook plate is pulled upward by the pull handle, the connecting vertical plate is lost of limitation, the limiting slider is displaced under the pushing of the limiting spring, the arc-shaped limiting plate is clamped with the inner wall of the connecting ring through the connecting cross bar of the limiting slider, the top of the slip is fixed with the connecting through slot, and then the screw at the bottom of the slip is fixed with the occlusion through hole.

[0021] (3) The device can be rotated through the slip drive, so that the ocean oil field is drilled through the drill bit. During the drilling process, the arc-shaped limiting plate is clamped with the inner wall of the connecting ring, the connecting ring can be effectively limited, the vibration is transmitted to the limiting partition plate through the connecting shaft and the connecting block through the supporting plate, the limiting partition plate is buffered through the elastic pad, and thus the deformation of the drill pipe is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the present application;

[0023] Figure 2 is a structural schematic view of the connecting ring of the present application;

[0024] Figure 3 is a connecting structure schematic view of the top end of the limiting plate of the present application;

[0025] Figure 4The schematic view of the connecting structure between the connecting disc and the mounting column of the present application;

[0026] Figure 5 The schematic view of the connecting structure between the first drill pipe and the mounting column of the present application;

[0027] Figure 6 The schematic view of the connecting structure between the first drill pipe and the mounting column of the present application; Figure 1 The enlarged structural schematic view of A in the present application;

[0028] Figure 7 The enlarged structural schematic view of B in the present application. Figure 1 The enlarged structural schematic view of B in the present application.

[0029] In the figure: 1, the first drill pipe; 2, the connecting disc; 3, the second drill pipe; 4, the water distribution plate; 5, the drill bit; 6, the connecting sleeve; 7, the mounting connecting plate; 8, the connecting groove; 9, the limiting partition plate; 10, the occlusion through hole; 11, the elastic pad; 12, the connecting block; 13, the mounting column; 14, the supporting connecting plate; 15, the limiting screw hole; 16, the connecting shaft; 17, the limiting connecting plate; 18, the limiting sliding groove; 19, the connecting vertical plate; 20, the limiting sliding block; 21, the connecting cross bar; 22, the arc-shaped limiting plate; 23, the limiting spring; 24, the limiting hook plate; 25, the pull handle; 26, the connecting pin column; 27, the connecting pin hole; 28, the mounting screw hole; 29, the fixed partition plate; 30, the limiting bolt; 31, the fixed sleeve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0031] Please refer to Figures 1-7The present invention provides a technical solution: a high-strength drill pipe for preventing slip bite based on offshore oil mining, comprising 1. a first drill pipe tube; 2. a connecting disc; 3. a second drill pipe tube; 4. a water distribution plate; 5. a drill bit; 6. a connecting collar; 7. a mounting plate; 8. a connecting through groove; 9. a limiting partition; 10. an engaging through hole; 11. an elastic pad; 12. a connecting block; 13. a mounting column; 14. a supporting connecting plate; 15. a limiting screw hole; 16. a connecting shaft; 17. a limiting connecting plate; 18. a limiting slide groove; 19. a connecting vertical plate; 20. a limiting slider; 21. a connecting cross bar; 22. an arc-shaped limiting plate; 23. a limiting spring; 24. a limiting hook plate; 25. a pull handle; 26. a connecting bolt column; 27. a connecting pin hole; 28. a mounting screw hole; 2 9. Fixed partition; 30. Limit bolt; 31. Fixed collar. A mounting column 13 is fixedly installed at the center of the top of the first drill pipe 1. A mounting screw hole 28 is opened at the top of the mounting column 13. The internal thread of the mounting screw hole 28 is connected with a mounting screw. The top of the mounting screw is fixedly connected to the connecting disc 2. Four mounting connecting plates 7 are fixed on the outer wall of the connecting disc 2. The four mounting connecting plates 7 are fixedly connected to the connecting collar 6 at one end away from the connecting disc 2. Four limiting partitions 9 are fixed at the bottom of the connecting disc 2. An elastic pad 11 is fixed on one side of each limiting partition 9. Each elastic pad 11 is in contact with the mounting column 13. Two connecting blocks 12 are fixed on the other side of each limiting partition 9. There is a through hole between every two adjacent connecting blocks 12. A connecting shaft 16 is inserted into the connection, and a fixing collar 31 is sleeved at the center of the outer surface of each connecting shaft 16. One side of each fixing collar 31 is fixedly connected to a supporting connecting plate 14, and a limiting screw hole 15 is provided on one side of each supporting connecting plate 14. Four fixing partitions 29 are fixedly provided on the inner wall of the connecting collar 6. A limiting bolt 30 is threadedly connected between each fixing partition 29 and the supporting connecting plate 14 facing the same position. The bottom end of the first drill pipe 1 is fixedly connected to the second drill pipe 3, and a drill bit 5 is fixedly installed at the bottom end of the second drill pipe 3. A water distribution plate 4 is fixed at the edge of the outer surface of the first drill pipe 1. The limiting hook plate 24 is pulled up by the pull handle 25, so that the connecting vertical plate 19 loses its limit, and the limiting slider 20 is displaced under the push of the limiting spring 23, limiting The positioning slider 20 pushes the arc-shaped limit plate 22 through the connecting cross bar 21, so that the arc-shaped limit plate 22 is clamped with the inner wall of the connecting collar 6, fixing the top of the slip with the connecting groove 8, and then fixing the screw at the bottom of the slip with the bite hole 10. The device can then be driven to rotate by the slip, so that the offshore oil field can be drilled through the drill bit 5. During the drilling process, the arc-shaped limit plate 22 is clamped with the inner wall of the connecting collar 6, which can effectively limit the connecting collar 6, and transmit the vibration to the limit partition 9 through the connecting shaft 16 and the connecting block 12 through the supporting connecting plate 14. The limit partition 9 is buffered by the elastic pad 11 to avoid deformation of the drill pipe. A connecting groove 8 is provided at the top of the outer surface of the connecting collar 6, and a plurality of bite holes 10 are evenly provided on the outer surface of the connecting collar 6.

[0032] according to Figures 2-5 As shown, the three sides of the first drill pipe 1 are fixed with limit connecting plates 17, and the top of each limit connecting plate 17 is provided with a limit sliding groove 18. The inner walls of each limit sliding groove 18 are slidably connected with a limit slider 20, and each limit sliding groove 20 is connected to the limit sliding groove 18 opposite to the position through a limit spring 23. One side of each limit slider 20 is fixedly connected with a connecting cross bar 21, and one end of each connecting cross bar 21 is fixedly connected with an arc-shaped limit plate 22. Each arc-shaped limit plate 22 contacts the inner wall of the connecting collar 6. The edge of the top of each limit slider 20 is fixedly connected with a connecting vertical plate 19, and the edge of the top of each limit connecting plate 17 is provided with two connecting pin holes 27, and the inside of each connecting pin hole 27 is interspersed with a connecting bolt column 26.

[0033] according to Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, the tops of every two adjacent connecting bolts 26 are fixedly connected with a limiting hook plate 24, and a through groove is provided on one side of the top of each limiting hook plate 24. Each connecting vertical plate 19 is connected to the through groove in the opposite position, and a pull handle 25 is fixed on the other side of the top of each connecting vertical plate 19. If the connecting ring 6 is deformed or damaged after high-intensity work, the slip is separated from the connecting ring 6. The arc-shaped limiting plate 22 can be reset, and the limiting hook plate 24 can be lowered so that the limiting hook plate 24 is connected to the connecting vertical plate 19. Then, the limiting bolt 30 can be rotated to remove the supporting connecting plate 14, so that the supporting connecting plate 14 is flipped in the vertical direction, and then the connecting disc 2 is rotated so that the connecting disc 2 is connected to the installation The column 13 is separated, and then a new connecting ring 6 is taken out, and the connecting disc 2 is rotated so that the mounting screw at the bottom end of the connecting disc 2 is threadedly connected to the mounting column 13. Then, the limit hook plate 24 is pulled up by the pull handle 25, so that the connecting vertical plate 19 loses its limit, and the limit slider 20 is displaced under the push of the limit spring 23. The limit slider 20 pushes the arc-shaped limit plate 22 through the connecting cross bar 21, so that the arc-shaped limit plate 22 is clamped with the inner wall of the connecting ring 6, so that the supporting connecting plate 14 is flipped and aligned with the fixed partition 29. It is limited by the limit bolt 30, and then the new connecting ring 6 is installed and fixed to the slip, which facilitates oil extraction and does not require the drill pipe to be removed, making the extraction efficiency higher.

[0034] The working principle of this embodiment is: when using this high-strength drill pipe based on marine oil development to prevent slip bite, Figure 1 、 Figure 2 and Figure 7As shown, the device is placed in a suitable position, and the limit hook plate 24 is pulled up by the pull handle 25, so that the connecting vertical plate 19 loses its limit, and the limit slider 20 is displaced under the push of the limit spring 23. The limit slider 20 pushes the arc limit plate 22 through the connecting cross bar 21, so that the arc limit plate 22 is clamped with the inner wall of the connecting ring 6, and the top of the slip is fixed to the connecting groove 8, and then the screw at the bottom of the slip is fixed to the bite hole 10. Then, the device can be driven to rotate by the slip, so that the offshore oil field can be drilled through the drill bit 5. During the drilling process, since the arc limit plate 22 is clamped with the inner wall of the connecting ring 6, the connecting ring 6 can be effectively limited, and the vibration is transmitted to the limit partition 9 through the connecting shaft 16 and the connecting block 12 through the supporting connecting plate 14. The limit partition 9 is buffered by the elastic pad 11 to avoid deformation of the drill pipe.

[0035] like Figures 2-7 As shown, if the connecting ring 6 is deformed or damaged after high-intensity work, the slip can be separated from the connecting ring 6 by resetting the arc-shaped limit plate 22 and sliding the limit hook plate 24 down so that the limit hook plate 24 is interlaced with the connecting vertical plate 19. Then, the limit bolt 30 is rotated and removed so that the supporting connecting plate 14 is flipped in the vertical direction. Then, the connecting disc 2 is rotated to separate the connecting disc 2 from the mounting column 13. Then, a new connecting ring 6 is taken out and the connecting disc 2 is rotated so that the mounting screw at the bottom of the connecting disc 2 is threadedly connected to the mounting column 13. Then, the limit hook plate 24 is pulled upward by the pull handle 25, so that the connecting vertical plate 19 loses its limit, and the limit slider 20 is displaced under the push of the limit spring 23. The limit slider 20 pushes the arc-shaped limit plate 22 through the connecting cross bar 21, so that the arc-shaped limit plate 22 is clamped with the inner wall of the connecting ring 6, so that the supporting connecting plate 14 is flipped and aligned with the fixed partition 29. The position is limited by the limit bolt 30, and then the new connecting ring 6 is installed and fixed to the slip, which facilitates oil extraction and does not require the drill pipe to be removed, making the extraction efficiency higher.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-strength drill pipe for preventing slip bite based on offshore oil mining, comprising a first drill pipe tube (1), characterized in that: A mounting column (13) is fixedly installed at the center of the top end of the first drill pipe (1), a mounting screw hole (28) is opened at the top end of the mounting column (13), the internal thread of the mounting screw hole (28) is connected to a mounting screw, the top end of the mounting screw is fixedly connected to a connecting disc (2), four mounting connecting plates (7) are fixedly provided on the outer wall of the connecting disc (2), the ends of the four mounting connecting plates (7) away from the connecting disc (2) are fixedly connected to a connecting collar (6), four limiting partitions (9) are fixedly provided at the bottom of the connecting disc (2), one side of each limiting partition (9) is fixedly provided with an elastic pad (11), each elastic pad (11) is in contact with the mounting column (13), and the other side of each limiting partition (9) is fixedly provided with two connecting blocks (12). A connecting shaft (16) is inserted and connected between each two adjacent connecting blocks (12); a fixing collar (31) is sleeved at the center of the outer surface of each connecting shaft (16); one side of each fixing collar (31) is fixedly connected to a supporting connecting plate (14); one side of each supporting connecting plate (14) is provided with a limiting screw hole (15); four fixing partitions (29) are fixedly provided on the inner wall of the connecting collar (6); a limiting bolt (30) is threadedly connected between each fixing partition (29) and the supporting connecting plate (14) facing the fixing partition (29); the bottom end of the first drill pipe (1) is fixedly connected to the second drill pipe (3); a drill bit (5) is fixedly installed at the bottom end of the second drill pipe (3); and a water distribution plate (4) is fixedly provided at the edge of the outer surface of the first drill pipe (1); Limiting connecting plates (17) are fixedly provided on three sides of the first drill pipe (1); A limiting sliding groove (18) is provided at the top of each limiting connecting plate (17), and a limiting sliding block (20) is slidably connected between the inner walls of each limiting sliding groove (18); Two connecting pin holes (27) are provided at the edge of the top end of each of the limiting connecting plates (17), and a connecting bolt (26) is inserted and connected inside each of the connecting pin holes (27); A connecting vertical plate (19) is fixedly connected to the edge of the top end of each limiting slider (20); A limiting hook plate (24) is fixedly connected between the top ends of each two adjacent connecting bolts (26), a through slot is provided on one side of the top end of each limiting hook plate (24), each connecting vertical plate (19) is connected through the through slot facing the connecting vertical plate (19), and a pull handle (25) is fixed on the other side of the top end of each connecting vertical plate (19).

2. The high-strength drill pipe for preventing slip bites in offshore oil mining according to claim 1, characterized in that: A connecting through groove (8) is provided on the top of the outer surface of the connecting collar (6), and a plurality of occlusal through holes (10) are evenly provided on the outer surface of the connecting collar (6).

3. The high-strength drill pipe for preventing slip bites in offshore oil mining according to claim 1, characterized in that: Each of the limiting sliders (20) is connected to the corresponding limiting slot (18) via a limiting spring (23), and one side of each of the limiting sliders (20) is fixedly connected to a connecting crossbar (21).

4. The high-strength drill pipe for preventing slip bites in offshore oil mining according to claim 3, characterized in that: One end of each connecting cross bar (21) is fixedly connected to an arc-shaped limiting plate (22), and each arc-shaped limiting plate (22) is in contact with the inner wall of the connecting collar (6).

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