Drilling disaster prevention and control equipment

Abstract

The utility model discloses drilling disaster prevention and control equipment, which belongs to the technical field of drilling engineering and comprises a drill rod main body, a mounting groove is formed in the outer side wall of the drill rod main body, a fixed rod is fixedly connected to the outer side wall of the drill rod main body, an arc-shaped plate is rotatably connected to the outer side wall of the fixed rod, and a telescopic rod is rotatably connected to the outer side wall of the arc-shaped plate. The ends, away from the arc-shaped plates, of the telescopic rods are rotationally connected with the outer side wall of the drill rod body. According to the drilling disaster prevention and control equipment, through cooperative use of a fixing rod, an arc-shaped plate, a telescopic rod, a reset spring, a pushing ring, a clamping groove, a waterproof motor, teeth, a supporting rod and a rolling wheel, the angle between the arc-shaped plate and the drill rod body can be conveniently adjusted, so that the inner side wall of a drilled well is conveniently compacted, meanwhile, slurry is evenly smeared, and the drilling disaster prevention and control efficiency is improved. The situation that the mud cannot effectively protect the well wall is avoided, and therefore the situation that rock in the stratum collapses due to support losing, rock blocks are accumulated in the well, and normal up-down movement of a drilling tool and smooth drilling operation are affected is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of drilling engineering technology, specifically, it relates to a drilling disaster prevention and control equipment. Background Technology

[0002] Drilling is a core technology for the exploration and development of resources such as oil, natural gas, and geothermal energy.

[0003] However, drilling projects face many severe challenges under complex geological conditions, with the risks of wellbore instability and formation collapse being particularly prominent. During drilling, the drill pipe and wellbore interact continuously, which can easily disrupt the original stress balance of the formation. Currently, traditional control measures mainly rely on the hydrostatic pressure of drilling mud to maintain wellbore stability. However, when encountering formations with well-developed fractures or soft rock layers, the mud can easily leak along the fractures, thereby losing its stabilizing effect. This results in the wellbore not being effectively supported, leading to local spalling or even large-scale collapse.

[0004] Collapsed rock fragments accumulating inside the well not only obstruct the normal raising and lowering of the drilling tools but can also trigger serious accidents such as stuck drill bits and buried drill bits, potentially forcing drilling operations to be interrupted in extreme cases. This not only significantly prolongs the construction period but also greatly increases safety risks, causing huge losses to the project.

[0005] In existing technologies, most conventional wellbore compaction devices adopt a fixed angle structure, which cannot dynamically adjust the compaction range and contact pressure according to the complex and ever-changing working conditions downhole. This results in uneven mud application on the wellbore, making it difficult to effectively seal formation fractures. In addition, uneven distribution of compaction force can easily cause local stress concentration, which not only fails to reinforce the wellbore but also accelerates the damage to the wellbore structure.

[0006] To address the aforementioned problems, this application proposes a drilling disaster prevention and control equipment. Utility Model Content

[0007] In view of the problems in related technologies, this utility model proposes a drilling disaster prevention and control equipment to overcome the above-mentioned technical problems existing in the existing related technologies.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A drilling disaster prevention and control equipment includes a drill rod body. An installation groove is formed on the outer side wall of the drill rod body. A fixing rod is fixedly connected to the outer side wall of the drill rod body. An arc-shaped plate is rotatably connected to the outer side wall of the fixing rod. A telescopic rod is rotatably connected to the outer side wall of the arc-shaped plate. The end of the telescopic rod away from the arc-shaped plate is rotatably connected to the outer side wall of the drill rod body. A return spring is wound around the outer side wall of the telescopic rod. One end of the return spring is fixedly connected to the outer side wall of the arc-shaped plate. The end of the return spring away from the arc-shaped plate is fixedly connected to the outer side wall of the drill rod body. A push ring is rotatably connected to the outer side wall of the drill rod body near the arc-shaped plate. Teeth are provided on the inner side wall of the push ring. A waterproof motor is fixedly connected to the outer side wall of the drill rod body near the push ring. A gear that meshes with the teeth is provided at the output end of the waterproof motor. A support rod is fixedly connected to the outer side wall of the push ring. A roller is rotatably connected to the end of the support rod away from the push ring. A slot is formed on the outer side wall of the arc-shaped plate.

[0010] Preferably, a connecting rod is fixedly connected to one end of the fixed rod near the push ring. The inner side wall of the connecting rod is threaded. A fixing bolt is threaded to one end of the connecting rod away from the fixed rod. A protective cover is detachably connected to the connecting rod through the fixing bolt. By setting the connecting rod, the protective cover, and the fixing bolt, the waterproof motor can be protected, and mud and water can be avoided from damaging the waterproof motor.

[0011] Preferably, the outer wall of the protective cover is provided with a protrusion, and a limiting groove adapted to the protrusion is provided on the side of the protective cover away from the protrusion. By providing the protrusion and the limiting groove, it is convenient to limit the two parts of the protective cover and prevent the two parts of the protective cover from separating after installation.

[0012] Preferably, the inner wall of the drill pipe body is provided with a slurry injection groove, and the outer wall of the drill pipe body is provided with a circular hole that communicates with the slurry injection groove. By providing the slurry injection groove and the circular hole, it is convenient to spray the protective slurry for drilling.

[0013] Preferably, a sliding column is fixedly connected to the outer side wall of the drill rod body, and a baffle is slidably connected to the outer side wall of the sliding column. By setting the sliding column and the baffle, it is convenient to protect the circular hole and prevent external mud and sand from entering the interior of the circular hole during drilling.

[0014] Preferably, a tension spring is fixedly connected to the bottom of the baffle, and the end of the tension spring away from the baffle is fixedly connected to the outer wall of the drill rod body. By setting the tension spring, the baffle can provide intermittent protection to the round hole during the process of protective slurry spraying.

[0015] In summary, the technical effects and advantages of this utility model are as follows: This drilling disaster prevention and control equipment, through the coordinated use of a fixed rod, an arc plate, a telescopic rod, a return spring, a push ring, a slot, a waterproof motor, teeth, a support rod, and rollers, facilitates the adjustment of the angle between the arc plate and the drill pipe body, thereby facilitating the compaction of the inner wall of the well and the uniform application of drilling mud. This prevents the mud from failing to effectively protect the well wall, thus preventing the rocks in the formation from losing support and collapsing, leading to the accumulation of rock fragments in the well, which would affect the normal up-and-down movement of the drilling tools and the smooth progress of drilling operations.

[0016] The protective cover, fixing bolts, protrusions, and limiting grooves facilitate the protection of the push ring, waterproof motor, teeth, and gears installed on the waterproof motor, preventing stones, rocks, etc. from entering between the push ring and the waterproof motor during drilling, thereby preventing rock fragments from causing obstruction to the push ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the waterproof motor and related parts of this utility model;

[0019] Figure 3 This is a schematic diagram of the arc-shaped plate and related parts of this utility model;

[0020] Figure 4 This is a schematic diagram of the return spring and related parts of this utility model;

[0021] Figure 5 This is a schematic diagram of the protective cover and related parts of this utility model;

[0022] Figure 6 This is a schematic diagram of the baffle and related parts of this utility model.

[0023] In the picture:

[0024] 1. Drill rod body; 2. Mounting groove; 3. Fixing rod; 4. Arc plate; 5. Telescopic rod; 6. Return spring; 7. Push ring; 8. Slot; 9. Waterproof motor; 10. Tooth; 11. Support rod; 12. Roller; 13. Connecting rod; 14. Protective cover; 15. Fixing bolt; 16. Protrusion; 17. Limiting groove; 18. Slurry injection groove; 19. Round hole; 20. Sliding column; 21. Baffle; 22. Tension spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-4 A drilling disaster prevention and control equipment includes a drill rod body 1. Four mounting slots 2 are provided on the outer wall of the drill rod body 1, arranged in a circular array. Four fixing rods 3 are fixedly connected to the outer wall of the drill rod body 1, also arranged in a circular array. Taking one fixing rod 3 as an example, an arc-shaped plate 4 is rotatably connected to the outer wall of the fixing rod 3. A telescopic rod 5 is rotatably connected to the outer wall of the arc-shaped plate 4. The end of the telescopic rod 5 away from the arc-shaped plate 4 is rotatably connected to the outer wall of the drill rod body 1. The end of the telescopic rod 5 away from the arc-shaped plate 4 is located inside one of the mounting slots 2. A return spring 6 is wound around the outer wall of the telescopic rod 5. One end of the return spring 6 is fixedly connected to the outer wall of the arc-shaped plate 4, and the other end of the return spring 6 away from the arc-shaped plate 4 is fixedly connected to the outer wall of the drill rod body 1. The sidewall is fixedly connected. When the arc plate 4 is close to the drill rod body 1, the return spring 6 corresponding to the arc plate 4 is in a contracted state. The outer sidewall of the drill rod body 1 near the arc plate 4 is rotatably connected to a push ring 7. The inner sidewall of the push ring 7 is provided with teeth 10. Several teeth 10 are provided and evenly distributed on the inner sidewall of the push ring 7. The outer sidewall of the drill rod body 1 near the push ring 7 is fixedly connected to a waterproof motor 9. The waterproof motor 9 is connected to an external power source. The output end of the waterproof motor 9 is provided with a gear that meshes with the teeth 10. The outer sidewall of the push ring 7 is fixedly connected to a support rod 11. The support rod 11 is located between the arc plate 4 and the drill rod body 1. The end of the support rod 11 away from the push ring 7 is rotatably connected to a roller 12. The outer sidewall of the arc plate 4 is provided with a slot 8. The roller 12 is located inside the slot 8, and the outer sidewall of the roller 12 is in contact with the inner wall of the slot 8.

[0027] During drilling, the operator can start the waterproof motor 9. The gear at the output end of the waterproof motor 9 drives the push ring 7 to rotate in the direction of the fixed rod 3. The rotation of the push ring 7 will cause the support rod 11 and the roller 12 to rotate synchronously. Since the roller 12 is located inside the slot 8 and the outer wall of the roller 12 is in contact with the inner wall of the slot 8, when the positions of the support rod 11 and the roller 12 change, the roller 12 will push the end of the arc plate 4 away from the fixed rod 3 to gradually move away from the drill pipe body 1 through contact with the outer wall of the arc plate 4. When the end of the arc plate 4 away from the fixed rod 3 is displaced, it will drive the telescopic rod 5 to extend. As the roller 12 extends, it pulls the return spring 6, causing it to extend synchronously. When the roller 12 gradually approaches the fixed rod 3, it pushes the outer wall of the arc plate 4 to fit against the inner wall of the well. When the drill bit sprays mud onto the inner wall of the well during drilling, the outer wall of the arc plate 4 spreads the mud, making it easier for the mud to evenly cover the inner wall of the well. This prevents some areas of the well wall from lacking sufficient protection. If the drilling fluid column pressure cannot effectively balance the formation pressure, the rocks in the formation may collapse due to loss of support, resulting in rock accumulation in the well and affecting the normal up and down movement of the drill bit and the smooth progress of drilling operations.

[0028] Reference Figure 4 A connecting rod 13 is fixedly connected to one end of the fixed rod 3 near the pushing ring 7. There are four connecting rods 13. The four connecting rods 13 are fixedly connected to one end of the four fixed rods 3 respectively. The inner sidewall of the four connecting rods 13 is threaded. The end of the four connecting rods 13 away from the fixed rod 3 is threadedly connected to a fixing bolt 15. The four connecting rods 13 are detachably connected to a protective cover 14 through the four fixing bolts 15. The protective cover 14 is divided into two parts, which can be combined into a complete ring.

[0029] Reference Figure 5 The outer wall of the protective cover 14 is provided with a protrusion 16. The protective cover 14 is divided into two parts. Taking one part as an example, the protrusion 16 is located at one end of this part of the protective cover 14. The side of the protective cover 14 away from the protrusion 16 is provided with a limiting groove 17 that matches the protrusion 16. Both parts of the protective cover 14 are provided with protrusions 16 and limiting grooves 17, and the positions of the protrusions 16 and limiting grooves 17 on the two parts of the protective cover 14 match each other. During installation, the protrusion 16 can be snapped into the inside of the limiting groove 17 to restrict the two parts of the protective cover 14 and prevent the two parts of the protective cover 14 from separating during use.

[0030] Reference Figure 1 and Figure 6The inner side wall of the drill rod body 1 is provided with a slurry injection groove 18, and the outer side wall of the drill rod body 1 is provided with a circular hole 19 that communicates with the slurry injection groove 18. There are two circular holes 19, and the two circular holes 19 are symmetrically distributed on the symmetrical surface of the drill rod body 1.

[0031] Reference Figure 6 The outer wall of the drill pipe body 1 is fixedly connected with a sliding column 20. There are four sliding columns 20, which are divided into two groups. The two groups of sliding columns 20 are located outside the two round holes 19 respectively. The outer walls of the two groups of sliding columns 20 are slidably connected with baffles 21. The baffles 21 are located outside the drill pipe body 1 and cooperate with the round holes 19. The center of the baffle 21 and the center of the round hole 19 are on the same vertical line and completely coincide in spatial position to achieve the sealing function.

[0032] Reference Figure 6 A tension spring 22 is fixedly connected to the bottom of the baffle 21. The end of the tension spring 22 away from the baffle 21 is fixedly connected to the outer wall of the drill rod body 1. When the mud in the round hole 19 is sprayed out, it impacts the baffle 21. At this time, the baffle 21 pulls the tension spring 22 and moves away from the round hole 19, releasing the seal on the round hole 19. When the mud stops intermittently, under the action of the tension spring 22, the baffle 21 moves towards the round hole 19 to seal the round hole 19 and prevent external rock fragments or lumps of mud from entering the interior of the round hole 19.

[0033] 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, improvements, etc., 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 drilling disaster prevention and control equipment, comprising a drill pipe body (1), characterized in that, The outer side wall of the drill rod body (1) is provided with an installation groove (2). A fixing rod (3) is fixedly connected to the outer side wall of the drill rod body (1). An arc plate (4) is rotatably connected to the outer side wall of the fixing rod (3). A telescopic rod (5) is rotatably connected to the outer side wall of the arc plate (4). The end of the telescopic rod (5) away from the arc plate (4) is rotatably connected to the outer side wall of the drill rod body (1). A return spring (6) is wound around the outer side wall of the telescopic rod (5). One end of the return spring (6) is fixedly connected to the outer side wall of the arc plate (4). The end of the return spring (6) away from the arc plate (4) is fixedly connected to the outer side wall of the drill rod body (1). The outer wall is fixedly connected, and a push ring (7) is rotatably connected to the outer wall of the drill rod body (1) near the arc plate (4). The inner wall of the push ring (7) is provided with teeth (10). A waterproof motor (9) is fixedly connected to the outer wall of the drill rod body (1) near the push ring (7). The output end of the waterproof motor (9) is provided with a gear that meshes with the teeth (10). A support rod (11) is fixedly connected to the outer wall of the push ring (7). A roller (12) is rotatably connected to the end of the support rod (11) away from the push ring (7). A slot (8) is opened on the outer wall of the arc plate (4).

2. The drilling disaster prevention and control equipment according to claim 1, characterized in that, The fixed rod (3) is fixedly connected to a connecting rod (13) at one end near the push ring (7). The inner side wall of the connecting rod (13) is threaded. The connecting rod (13) is threaded to a fixing bolt (15) at one end away from the fixed rod (3). The connecting rod (13) is detachably connected to a protective cover (14) via the fixing bolt (15).

3. The drilling disaster prevention and control equipment according to claim 2, characterized in that, The outer wall of the protective cover (14) is provided with a protrusion (16), and a limiting groove (17) adapted to the protrusion (16) is provided on the side of the protective cover (14) away from the protrusion (16).

4. The drilling disaster prevention and control equipment according to claim 1, characterized in that, The inner wall of the drill rod body (1) is provided with a slurry injection groove (18), and the outer wall of the drill rod body (1) is provided with a circular hole (19) that communicates with the slurry injection groove (18).

5. The drilling disaster prevention and control equipment according to claim 1, characterized in that, A sliding column (20) is fixedly connected to the outer wall of the drill rod body (1), and a baffle (21) is slidably connected to the outer wall of the sliding column (20).

6. The drilling disaster prevention and control equipment according to claim 5, characterized in that, A tension spring (22) is fixedly connected to the bottom of the baffle (21), and the end of the tension spring (22) away from the baffle (21) is fixedly connected to the outer wall of the drill rod body (1).

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