Impact-resistant thread structure of thick-wall drill rod joint

Abstract

The utility model relates to the technical field of drill rod joints, and discloses an impact-resistant threaded structure of a thick-wall drill rod joint, which comprises a rod body, spiral grooves are arranged on the left side and the right side of the inner wall of the rod body, the inner walls of the spiral grooves are in threaded connection with two-way joints, and spiral joints are arranged on the left side and the right side of the outer wall of each two-way joint. A first gasket is fixedly connected to the outer wall of the two-way connector, connecting columns are fixedly connected to the outer wall of the first gasket, threaded rods are connected to the inner walls of the multiple connecting columns in a threaded mode, a short connector is connected to the right side of the outer wall of the two-way connector in a threaded mode, and a buckle groove is formed in the left side of the outer wall of the short connector. The right side of the outer wall of the short connector is fixedly connected with a circular ring. According to the utility model, the connecting column on the gasket I is connected with the screw rod, the short joint is connected with the clamping seat, then the clamping spring in the clamping seat is used for clamping with the fixing block outside the drill bit, and finally the circular ring is used for limiting, so that multiple connection is realized.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe joint technology, and in particular to an impact-resistant threaded structure for thick-walled drill pipe joints. Background Technology

[0002] Thick-walled drill pipes are primarily used in oil and gas exploration and geological drilling. With their thick walls, they possess exceptional strength and resistance to deformation, allowing them to operate stably at depths of thousands of meters or even deeper. They bear the crucial responsibility of transmitting the torque and axial pressure of the drilling equipment, ensuring efficient rock breaking and drilling. Simultaneously, they provide a channel for drilling fluid circulation, carrying rock cuttings from the wellbore to the surface and maintaining the smooth progress of drilling operations. Especially in complex geological conditions, such as drilling through deep, hard rock layers or high-pressure oil and gas reservoirs, thick-walled drill pipes are a core component ensuring both operational safety and efficiency.

[0003] However, most thick-walled drill pipe joints rely on traditional single-threaded structures for connection. During long-term use, these threaded structures are prone to plastic deformation under strong impact loads. Furthermore, during drilling operations, internal cooling systems cannot effectively and evenly cool the drill pipe. In the high-temperature, high-pressure drilling fluid environment rich in corrosive substances, the sealing grease is prone to failure. Currently, the market uses a dual-sealing system with metal sealing rings and rubber sealing gaskets working together, which can maintain stable sealing performance under high-pressure environments. However, this still cannot solve the instability of single-connection methods under long-term operation and with significant impacts. Additionally, due to prolonged operation, the internal cooling system cannot effectively cool the drill pipe, leading to drill pipe accidents and affecting work efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an impact-resistant threaded structure for thick-walled drill pipe joints, aiming to improve the instability of the single connection method in the prior art and the inability of fixed cooling to effectively cool down, thus affecting work efficiency.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an impact-resistant threaded structure for a thick-walled drill pipe joint, comprising a rod body, with helical grooves on both the left and right sides of the inner wall of the rod body, a bidirectional joint threadedly connected to the inner wall of the helical grooves, helical joints on both the left and right sides of the outer wall of the bidirectional joint, a gasket fixedly connected to the outer wall of the bidirectional joint, a connecting post fixedly connected to the outer wall of the gasket, screws threadedly connected to the inner walls of multiple connecting posts, a short joint threadedly connected to the right side of the outer wall of the bidirectional joint, a snap-fit ​​groove on the left side of the outer wall of the short joint, a ring fixedly connected to the right side of the outer wall of the short joint, a fixing component fixedly connected to the right side of the outer wall of the short joint, and a cooling structure provided inside the rod body for cooling the interior of the rod body.

[0006] As a further description of the above technical solution:

[0007] The cooling structure includes a water injection pipe, the outer wall of which is fixedly connected to the rod body. A transmission pipe is fixedly connected inside the water injection pipe. Rotating discs are fixedly connected to the top ends of multiple transmission pipes. Impellers are rotatably connected to the outer walls of multiple rotating discs. Bevel gears are fixedly connected to the ends of multiple transmission pipes. Hinged gears are meshed to the outer walls of multiple bevel gears. Rotating nozzles are fixedly connected to the top outer walls of multiple hinged gears. Rotating nozzles are fixedly connected to the outer walls of multiple rotating nozzles. Protective shells are fixedly connected to the outer walls of multiple bevel gears.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a retainer, the outer left side of which is fixedly connected to a short connector, and a retaining spring is fixedly connected inside the retainer.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the snap ring is provided with a positioning track, and the inner wall of the snap ring is slidably connected with a drill bit.

[0012] As a further description of the above technical solution:

[0013] A fixing block is fixedly connected to the left side of the outer wall of the drill bit, and a cutting blade is rotatably connected to the right side of the outer wall of the drill bit.

[0014] As a further description of the above technical solution:

[0015] A spiral blade is fixedly connected to the outer wall of the rod, and an anti-slip sleeve is fixedly connected to the outer wall of the drill bit.

[0016] As a further description of the above technical solution:

[0017] A second gasket is fixedly connected to the left side of the outer wall of the rod, and a connecting sleeve is fixedly connected to the left outer wall of the rod.

[0018] As a further description of the above technical solution:

[0019] The outer walls of the multiple protective shells are provided with water outlet holes, and a support column is fixedly connected to the left side of the outer wall of the water injection pipe.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the initial connection is made first through the spiral groove on one side of the rod body and the spiral joint on the bidirectional joint. Then, the connection is made through the connecting post and screw on the first washer. Then, the connection is made through the short joint and the card seat. Then, the snap ring in the card seat is used to lock the fixing block outside the drill bit. Finally, the ring is used for limiting the position, thus realizing multiple connections.

[0022] 2. In this utility model, firstly, the water flow through the transmission pipe causes the impeller on the rotating disc to rotate, then the transmission pipe follows the rotation, then the rotation of the transmission pipe drives the bevel gear to rotate, thus causing the curved gear to rotate, and finally the curved gear causes the rotating nozzle to rotate. Attached Figure Description

[0023] Figure 1 This is a front perspective view of the impact-resistant threaded structure of the thick-walled drill pipe joint proposed in this utility model.

[0024] Figure 2 This is a partial view of the left side of the impact-resistant threaded structure of the thick-walled drill pipe joint proposed in this utility model.

[0025] Figure 3 This is a split view of the short connector of the impact-resistant threaded structure of the thick-walled drill pipe joint proposed in this utility model.

[0026] Figure 4 This is a partial structural diagram of the mounting bracket for the impact-resistant threaded structure of the thick-walled drill pipe joint proposed in this utility model;

[0027] Figure 5 This is a partial structural disassembly diagram of the protective shell of the impact-resistant threaded structure of the thick-walled drill pipe joint proposed in this utility model.

[0028] Legend:

[0029] 1. Rod body; 2. Cooling structure; 201. Water injection pipe; 202. Transmission pipe; 203. Rotating disc; 204. Impeller; 205. Bevel gear; 206. Bending gear; 207. Rotating nozzle; 208. Rotating nozzle; 209. Protective shell; 3. Spiral groove; 4. Spiral joint; 5. Two-way joint; 6. Gasket one; 7. Connecting post; 8. Screw; 9. Snap-fit ​​groove; 10. Short joint; 11. Ring; 12. Card seat; 13. Snap ring; 14. Positioning rail; 15. Fixing block; 16. Drill bit; 17. Blade; 18. Anti-slip sleeve; 19. Spiral disc; 20. Connecting sleeve; 21. Gasket two; 22. Support post; 23. Water outlet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 2 - Appendix Figure 4 This utility model provides an embodiment of an impact-resistant threaded structure for a thick-walled drill pipe joint. The structure includes a main body 1, on which spiral grooves 3 are carefully formed on both the left and right sides of its inner wall. The inner walls of these spiral grooves 3 are tightly connected to a specially designed bidirectional joint 5 via threads. Furthermore, spiral joints 4 for connecting other components are formed on both the left and right sides of the outer wall of the bidirectional joint 5. In addition, a gasket 6 is firmly fixedly connected to the outer wall of the bidirectional joint 5, and multiple connecting posts 7 are further fixedly connected to the outer wall of the gasket 6 via threads. A short connector 10 is provided on the right side of the outer wall of the bidirectional connector 5 via a threaded connection, and a snap-fit ​​groove 9 is specially provided on the left side of the outer wall of the short connector 10 to enable quick and stable connection with other components. A ring 11 is fixedly connected to the right side of the outer wall of the short connector 10 to further increase the stability and reliability of the connection. In addition, a special fixing component is fixedly connected to the right side of the outer wall of the short connector 10 to ensure the stability and functionality of the overall structure. A cooling structure 2 is provided inside the rod body 1 to cool the inside of the rod body 1.

[0032] Specifically, the structure includes a main rod 1 with spiral grooves 3 on the left and right sides of its inner wall, which are tightly connected to a special two-way connector 5 via threads. The two-way connector 5 has spiral connectors 4 on the left and right sides of its outer wall for connecting other components. It also has a gasket 6, and the outer wall of the gasket 6 has multiple connecting posts 7. The inner wall of the connecting posts 7 is connected to the corresponding screw 8 via threads. The right side of the outer wall of the two-way connector 5 is connected to a short connector 10 by threads. The left side of the outer wall of the short connector 10 has a snap-fit ​​groove 9 for quick and secure connection. The right side has a fixing ring 11 to increase connection stability. It also has a special fixing component to ensure that the overall structure is stable and functional.

[0033] Please see the appendix Figure 3 - Appendix Figure 5 The cooling structure 2 consists of several key components. First, the structure includes a water injection pipe 201. The outer wall of the water injection pipe 201 is tightly connected to the main body 1 through a fixed connection to ensure the stability of the structure. Inside the water injection pipe 201, several transmission pipes 202 are fixedly connected. The top of each transmission pipe 202 is firmly connected to a rotating disc 203. The outer wall of each rotating disc 203 is connected to an impeller 204 through a rotatable connection, so that the impeller 204 can rotate under the drive of the rotating disc 203. Then, the end of each transmission pipe 202 is fixedly connected to a bevel gear 205. The outer wall of each bevel gear 205 is meshed with a toothed gear 206. Power is transmitted through the meshing of the gears. The top outer wall of each toothed gear 206 is fixedly connected to a rotating nozzle 207. The outer wall of each rotating nozzle 207 is further fixedly connected to a rotating nozzle 208 to ensure that the liquid can be sprayed evenly. In addition, in order to protect the bevel gear 205 and its related components, a protective shell 209 is fixedly connected to the outer wall of each bevel gear 205;

[0034] Specifically, the structure includes a water injection pipe 201, whose outer wall is fixedly connected to the main body 1 to ensure structural stability. Several transmission pipes 202 are fixed inside the water injection pipe 201. The top of the transmission pipe 202 is connected to a rotating disc 203. The outer wall of the rotating disc 203 is rotatably connected to an impeller 204 so that it can rotate accordingly. A bevel gear 205 is fixed at the end of the transmission pipe 202. The outer wall of the bevel gear 205 meshes with a curved gear 206 to realize power transmission. Rotary nozzles 207 are fixed to the top outer wall of the multiple curved gears 206. Rotary nozzles 208 are fixed to the outer wall of the rotating nozzles 207 to ensure uniform liquid spraying. In addition, a protective shell 209 is fixedly connected to the outer wall of each bevel gear 205 to protect the internal structure.

[0035] Please see the appendix Figure 3 - Appendix Figure 4The fixing assembly includes a component called a retainer 12. The left side of the outer wall of the retainer 12 is fixed to the short connector 10 by a robust connection to ensure a stable and reliable connection between the two. Inside the retainer 12, a component called a retaining spring 13 is fixedly connected. The outer wall of the retaining spring 13 has a positioning rail 14 specifically for positioning. The inner wall of the retainer 12 is connected to a drill bit 16 by a sliding connection, allowing the drill bit 16 to slide smoothly inside the retainer 12. The left side of the outer wall of the drill bit 16 is fixedly connected to a component called a fixing block 15, which is used to further stabilize the position of the drill bit 16. Meanwhile, the right side of the outer wall of the drill bit 16 is rotatably connected to a cutting blade 17.

[0036] Specifically, the fixing component includes a retainer 12, the left side of which is firmly fixed to the short connector 10 to ensure a stable connection. A retaining spring 13 is fixed inside the retainer 12, and the outer wall of the retaining spring 13 has a positioning rail 14. The inner wall of the retainer 12 is slidably connected to the drill bit 16 so that it can slide smoothly. The left side of the outer wall of the drill bit 16 is fixed by a fixing block 15 to stabilize its position, while the right side of the outer wall is rotatably connected to the cutting blade 17.

[0037] Please see the appendix Figure 1 - Appendix Figure 2 The outer wall of the rod body 1 is connected to a spiral blade 19 by a robust fixing method. The spiral blade 19 is designed to enhance the stability and penetration of the rod body 1. In addition, the outer wall of the drill bit 16 is also connected to an anti-slip sleeve 18 by a reliable fixing method. The main function of the anti-slip sleeve 18 is to improve the grip of the drill bit 16 during operation and prevent slippage. A second pad 21 is fixedly connected to the left side of the outer wall of the rod body 1. The function of the second pad 21 is to provide additional support and cushioning. A connecting sleeve 20 is also fixedly connected to the left outer wall of the rod body 1. The connecting sleeve 20 is designed to facilitate connection with other components. Water outlet holes 23 are evenly opened on the outer walls of multiple protective shells 209. The purpose of these water outlet holes 23 is to drain the internal water in time during operation and prevent excessive water pressure from damaging the equipment. A support column 22 is fixedly connected to the left side of the outer wall of the water injection pipe 201. The main function of the support column 22 is to provide additional support.

[0038] Specifically, the outer wall of the rod body 1 is sturdily connected to the spiral blade 19, which enhances its stability and penetration. The outer wall of the drill bit 16 is reliably connected to the anti-slip sleeve 18, which improves the grip and prevents slippage. The left side of the outer wall of the rod body 1 is fixed with a second gasket 21, which also fixes the connecting sleeve 20 for easy connection with other components. Multiple protective shells 209 have water outlet holes 23 evenly distributed on their outer walls to drain accumulated water in time. The left side of the outer wall of the water injection pipe 201 is fixed with a support column 22 to provide additional support.

[0039] Working principle: First, the spiral groove 3 inside the rod body 1 connects to the spiral joint 4 at one end of the two-way joint 5. Then, the gasket 6 on the outer wall of the two-way joint 5 is used to further fix it firmly through the action of the connecting post 7 and the screw 8. Then, because the two-way joint 5 is bidirectional, the other end is connected to the short joint 10. Then, the gasket 6 fits into the buckle groove 9. Then, the short joint 10 is connected to the card seat 12. The ring 11 on the outer wall of the short joint 10 provides a certain limit. Then, due to the positioning rail 14 on the snap ring 13 inside the card seat 12, it can be connected to the fixing block 15 at one end of the drill bit 16. Then, the positioning rail 14 is used to lock it, improving stability. Finally, the connection is completed and the work can be carried out. Through multiple connection methods, the whole is more robust and impact-resistant, avoiding the possibility of a single connection being not impact-resistant in special scenarios, which could lead to a disengagement event.

[0040] When cooling is required, high-pressure water enters the interior through the water injection pipe 201. Due to the water pressure, the rotating mechanism composed of the rotating disc 203 and the impeller 204 rotates, thereby causing the transmission pipe 202 to rotate. The rotation of the transmission pipe 202 sends power to the bevel gear 205, causing it to rotate as well. The power is then transmitted to the bevel gear 205 meshing with the curved gear 206, which in turn drives the rotating nozzle 207 to rotate. At the same time, high-pressure water is delivered to the rotating nozzle 207, and the high-pressure water inside the rotating nozzle 207 is sprayed through the rotating nozzle 208. During the rotation, the interior of the rod body 1 is cooled. This rotating jet effectively and evenly cools the interior of the rod, while also creating a circulation and retention effect on the target surface, extending the contact time between the coolant and the hot surface.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. An impact-resistant threaded structure for a thick-walled drill pipe joint, comprising a rod body (1), characterized in that: The inner wall of the rod (1) is provided with a spiral groove (3) on both the left and right sides. The inner wall of the spiral groove (3) is threaded with a two-way connector (5). The outer wall of the two-way connector (5) is provided with a spiral connector (4) on both the left and right sides. The outer wall of the two-way connector (5) is fixedly connected with a gasket (6). The outer wall of the gasket (6) is fixedly connected with a connecting post (7). The inner walls of the multiple connecting posts (7) are threaded with screws (8). The outer right side of the two-way connector (5) is threaded with a short connector (10). The outer left side of the short connector (10) is provided with a snap-fit ​​groove (9). The outer right side of the short connector (10) is fixedly connected with a ring (11). The outer right side of the short connector (10) is fixedly connected with a fixing component. The inside of the rod (1) is provided with a cooling structure (2). The cooling structure (2) is used to cool the inside of the rod (1).

2. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 1, characterized in that: The cooling structure (2) includes a water injection pipe (201), the outer wall of which is fixedly connected to the rod body (1), a transmission pipe (202) is fixedly connected inside the water injection pipe (201), a rotating disc (203) is fixedly connected to the top of each of the multiple transmission pipes (202), an impeller (204) is rotatably connected to the outer wall of each of the multiple rotating discs (203), a bevel gear (205) is fixedly connected to the end of each of the transmission pipes (202), a bevel gear (206) is meshed with the outer wall of each of the multiple bevel gears (205), a rotating nozzle (207) is fixedly connected to the top outer wall of each of the multiple bevel gears (206), a rotating nozzle (208) is fixedly connected to the outer wall of each of the multiple bevel gears (205), and a protective shell (209) is fixedly connected to the outer wall of each of the bevel gears (205).

3. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 1, characterized in that: The fixing component includes a retainer (12), the outer left side of which is fixedly connected to a short connector (10), and a retaining spring (13) is fixedly connected inside the retainer (12).

4. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 3, characterized in that: The outer wall of the snap ring (13) is provided with a positioning track (14), and the inner wall of the clasp (12) is slidably connected with a drill bit (16).

5. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 4, characterized in that: A fixing block (15) is fixedly connected to the left side of the outer wall of the drill bit (16), and a cutting blade (17) is rotatably connected to the right side of the outer wall of the drill bit (16).

6. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 5, characterized in that: The outer wall of the rod body (1) is fixedly connected with a spiral blade (19), and the outer wall of the drill bit (16) is fixedly connected with an anti-slip sleeve (18).

7. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 1, characterized in that: A gasket 2 (21) is fixedly connected to the left side of the outer wall of the rod (1), and a connecting sleeve (20) is fixedly connected to the left outer wall of the rod (1).

8. The impact-resistant threaded structure of the thick-walled drill pipe joint according to claim 2, characterized in that: The outer walls of the multiple protective shells (209) are provided with water outlet holes (23), and the left side of the outer wall of the water injection pipe (201) is fixedly connected with a support column (22).

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