Directional drill bit with camera

Abstract

The invention relates to the technical field of well drilling equipment, solves the problem that in the prior art, the environment in a well cannot be observed in the drilling process, and discloses a directional drilling bit with a camera, the directional drilling bit comprises a bit body and a camera assembly, the bit body is provided with a mounting groove along the two ends of a shaft in a penetrating mode, and the camera assembly is arranged in the mounting groove; the camera assembly comprises a camera, a mounting shell, a protective cover and a control assembly; the camera is slidably connected in the mounting shell; the protective cover is arranged at one end of the mounting shell and used for controlling communication or closing of the mounting shell and the mounting groove; the camera is provided with a linkage assembly which drives the protective cover to be opened or closed after moving. The mounting shell rotates relative to the drill bit body; the control assembly is used for controlling the camera to slide. The visual ability of the drill bit in the drilling process can be improved, and an operator can observe the drilling condition in real time.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and in particular to a directional drilling bit with a camera. Background Art

[0002] Polycrystalline diamond composite drill bit (PDC drill bit) is a drill bit widely used in drilling projects. Its characteristics are that the polycrystalline diamond (PDC) composite sheet is welded on the cylindrical cutting tool, and then the cutting tool is mounted on the drill bit body. This drill bit has excellent performance in soft to medium-hard formations due to its high efficiency, wear resistance, and long life.

[0003] The PDC drill bits in the prior art mainly include the following parts: drill bit body, cutting tool, cutting teeth, diameter protection structure and hydraulic structure. The drill bit body is the main part of the PDC drill bit, which is usually made of metal material and has high strength and rigidity. The drill bit body is provided with a cutting tool mounting groove for installing the cutting tool. The cutting tool is a key part of the PDC drill bit and is made of polycrystalline diamond composite sheet. The shape and number of the cutting tool are designed according to the formation conditions and drilling requirements. Common cutting tool shapes include round and triangular. The cutting tool is fixed to the drill bit body by welding or sintering. The cutting teeth are the working part of the cutting tool and are made of polycrystalline diamond. The cutting teeth directly contact the rock during the drilling process and form a wellbore by crushing the rock. The arrangement and distribution of the cutting teeth have an important influence on the drilling efficiency and the life of the drill bit. The diameter protection structure is used to keep the diameter of the wellbore stable and prevent the wellbore from expanding or shrinking. The diameter protection structure is usually located at the outer edge of the drill bit body and is made of wear-resistant material. The hydraulic structure includes nozzles, flow channels and other parts on the drill bit body, which are used to transport drilling fluid to the bottom of the drill bit and clean the wellbore. Reasonable design of the hydraulic structure can improve drilling efficiency and extend the life of the drill bit.

[0004] Regarding the above-mentioned related technologies, the PDC drill bit cannot directly observe the drilling process and needs to rely on the operator's experience and feeling to control the drilling trajectory. This method has low accuracy and high risk. It is impossible to intuitively and in real time monitor the trajectory deviation and formation conditions during the drilling process, which affects the efficiency and safety of the drilling operation. Summary of the invention

[0005] In order to improve the defect of the prior art that the well environment cannot be observed during the drilling process, the present application provides a directional drilling bit with a camera.

[0006] The following technical solutions are adopted: A directional drilling bit with a camera comprises a drill bit body and a camera assembly, wherein the drill bit body is provided with mounting grooves along both ends of the axis, and the camera assembly is arranged in the mounting grooves; the camera assembly comprises a camera, a mounting shell, a protective cover and a control assembly; the camera is slidably connected to the mounting shell; the protective cover is arranged at one end of the mounting shell and is used to control the connection or closure between the mounting shell and the mounting groove; the camera is provided with a linkage assembly that drives the protective cover to open or close after movement; the mounting shell and the drill bit body rotate relatively; and the control assembly is used to control the sliding of the camera.

[0007] By adopting the above technical solution, the camera assembly is installed in the mounting groove of the drill body, realizing a close combination of the camera and the drill. The camera slides in the mounting shell and is controlled by the control assembly, while the protective cover automatically opens or closes according to the movement state of the camera to protect the camera from damage by debris during the drilling process. It not only improves the visualization ability of the drill bit during the drilling process, but also ensures the stability and safety of the camera assembly, allowing operators to observe the drilling situation in real time, improving work efficiency and accuracy.

[0008] Optionally, the directional drill bit further includes a protective tube; the protective tube is connected to an end of the mounting shell away from the camera; the control assembly includes a control rod; the control rod is connected to the end of the camera.

[0009] By adopting the above technical solution, the protective tube is connected to the end of the camera assembly away from the camera, providing additional protection for the camera. The control rod not only connects the end of the camera, but also has the camera cable built in, realizing effective cable management and protection. The protective tube enhances the durability of the camera and reduces the risk of damage caused by the external environment. The design of the control rod simplifies the routing of the cable, avoids cable entanglement and damage during the drilling process, and improves the reliability and service life of the system.

[0010] Optionally, the mounting shell includes a detection chamber and a control chamber; the detection chamber and the control chamber are separated by a partition; the camera is slidably connected in the detection chamber; the control rod passes through the partition to the control chamber; the control assembly also includes an elastic member and a control plate; the control plate is coaxially arranged on the control rod, the control rod slides in the control chamber, and the elastic member is arranged in the control chamber so that the camera always has a tendency to move in the direction of the control chamber.

[0011] By adopting the above technical solution, the installation shell is divided into a detection chamber and a control chamber by a partition, the camera slides in the detection chamber, and the control rod passes through the partition to the control chamber. The combination of the elastic member and the control sheet makes the camera tend to move toward the control chamber, and the camera is precisely controlled by sliding the control rod. This makes the control of the camera more precise and flexible. At the same time, the setting of the elastic member ensures that the camera can automatically reset when not subject to external force, thereby improving the stability and response speed of the system.

[0012] Optionally, the drill bit body is provided with a plurality of injection channels.

[0013] By adopting the above technical solution, mud or flushing water can be injected during the drilling process.

[0014] Optionally, the drill body is further provided with a plurality of clean water channels; the clean water channels are connected to the ends of the mounting grooves.

[0015] By adopting the above technical solution, the installation groove is flushed with clean water to ensure a clear field of view of the camera.

[0016] Optionally, a protective tube is provided at one end of the mounting shell away from the protective cover; the protective tube penetrates through the drill body and extends outward; and the cable used by the camera is routed through the protective tube.

[0017] Optionally, the directional drill bit also includes an adapter box; one end of the adapter box passes through and covers the bottom of the drill bit body; the adapter box rotates relative to the drill bit body; the injection channel and the clean water channel both pass through the drill bit body; the adapter box is divided into a clean water chamber and a liquid passage chamber by a concentric dividing ring; the injection channel is connected to the liquid passage chamber; the clean water channel is connected to the clean water chamber; the clean water chamber is connected to a clean water pipe; the injection chamber is connected to the injection pipe; the protective pipe passes through the adapter box and is connected to the adapter box.

[0018] By adopting the above technical solution, the adapter box divides the space at the bottom of the drill body into a clean water chamber and a liquid chamber through a concentric separation ring tube, and connects the clean water pipe and the injection pipe respectively. The connecting pipe runs through the adapter box and is connected to the adapter box, realizing the independent supply of mud or flushing water and clean water. This makes the supply of mud and clean water more convenient and efficient, while avoiding confusion and mutual influence between the two, ensuring the smooth progress of the drilling operation.

[0019] Optionally, the protective cover includes two cover plates, and ends of the two cover plates that are away from each other are rotatably connected to the mounting shell.

[0020] By adopting the above technical solution, the protective cover is composed of two cover plates that rotate with each other and are connected to the bottom of the camera through a linkage component. When the camera moves, the linkage rod drives the cover plate to open or close the installation slot. The stability and sealing of the protective cover are enhanced, and the introduction of the linkage component makes the opening and closing of the protective cover more automated and convenient. The protection effect of the camera component is improved, and the risk of damage caused by the intrusion of external debris is reduced.

[0021] Optionally, the linkage assembly includes two linkage rods, one end of the linkage rod is hinged to the bottom of the camera, and the other end of the linkage rod is hinged to the corresponding cover plate.

[0022] Optionally, the end of the linkage rod is rotatably connected to a clearance block, and the cover plate is provided with a clearance groove for the clearance block to slide.

[0023] By adopting the above technical solution, the linkage assembly includes two linkage rods, one end of which is hinged to the bottom of the camera and the other end is hinged to the corresponding cover plate. The end of the linkage rod is also rotatably connected to a clearance block, and the cover plate is provided with a clearance groove for the clearance block to slide. This makes the linkage process more stable and smooth. It ensures the synchronous movement between the protective cover and the camera, and improves the overall coordination and stability of the system. At the same time, the setting of the clearance block and the clearance groove reduces the friction and resistance in the linkage process and prolongs the service life of the linkage assembly.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. It improves the visualization ability of the drill bit during the drilling process and ensures the stability and safety of the camera assembly, allowing operators to observe the drilling situation in real time and improve work efficiency and accuracy; 2. The adapter box divides the space at the bottom of the drill bit body into a clean water chamber and a liquid chamber through concentric separation rings, which are connected to the clean water pipe and the injection pipe respectively. This realizes the independent supply of flushing water and clean water. This makes the supply of mud and clean water more convenient and efficient, while avoiding confusion and mutual influence between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of this embodiment when it is in operation; Figure 2 is a schematic structural diagram of the embodiment when installed on a drill rod; Figure 3 is a top view of this embodiment; Figure 4 Schematic diagram of the cross-sectional structure of this embodiment; Figure 5 yes Figure 4 A schematic diagram of the structure after further sectioning; Figure 6 It is a schematic diagram of the enlarged structure at A; Figure 7 It is a schematic diagram of the structure of the cover plate and the camera part; Figure 8 This is a schematic diagram of the enlarged structure at point B.

[0026] Explanation of the reference numerals: 1. drill body; 11. mounting groove; 12. injection channel; 13. clean water channel; 21. camera; 22. mounting shell; 221. detection chamber; 222. control chamber; 223. partition; 23. protective cover; 231. cover plate; 2311. clearance groove; 3. protective tube; 4. control assembly; 41. control rod; 42. elastic member; 43. control sheet; 5. linkage assembly; 51. linkage rod; 52. clearance block; 6. adapter box; 61. dividing ring cylinder; 62. clean water chamber; 621. clean water pipe; 63. liquid passage chamber; 631. injection pipe. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 To Attachment Figure 8 This application is described in further detail.

[0028] The existing PDC drill bits in the prior art mainly include the following parts: drill bit body, cutting tool, cutting teeth, diameter protection structure and hydraulic structure. The existing PDC drill bits in the prior art are difficult to judge the situation in the well during drilling. It is necessary to rely on the operator's experience and feeling to control the drilling trajectory. This method has low accuracy and high risk. It is impossible to intuitively and real-time monitor the trajectory deviation and formation conditions during the drilling process, which affects the efficiency and safety of the drilling operation.

[0029] In order to make it possible to observe the situation in the well in time during the drilling process. Figure 1 The embodiment of the present application discloses a directional drilling drill bit with a camera, including a drill bit body 1 and a camera 21 assembly. The drilling operation is performed through the drill bit body 1, and the situation in the well is observed through the camera 21 assembly, so as to feedback the drilling situation.

[0030] Please refer to the instruction manual Figure 2 To Attachment Figure 4Specifically, the drill body 1 is provided with a mounting groove 11 along both ends of the axis, and the camera 21 assembly is arranged in the mounting groove 11. The camera 21 assembly includes a camera 21, a mounting shell 22, a protective cover 23 and a control assembly 4. The camera 21 is slidably connected in the mounting shell 22. The protective cover 23 is arranged at one end of the mounting shell 22 to control the connection or closure between the mounting shell 22 and the mounting groove 11. The camera 21 is provided with a linkage assembly 5 that drives the protective cover 23 to open or close after movement. The mounting shell 22 is a cylindrical tubular structure, and the mounting shell 22 rotates relative to the drill body 1. The control assembly 4 is used to control the sliding of the camera 21. The camera 21 assembly is installed in the mounting groove 11 of the drill body 1, so that the camera 21 and the drill bit are tightly combined. A circular seat is provided at the bottom of the camera 21, and the circular seat cooperates with the mounting shell 22 so that the camera 21 slides in the mounting shell 22.

[0031] Please refer to the instruction manual Figure 2 To Attachment Figure 8 Furthermore, the directional drill bit also includes a protective tube 3. The protective tube 3 is a round tube. The protective tube 3 is connected to the end of the mounting shell 22 away from the camera 21, and the protective tube 3 passes through the drill bit body 1 and extends outward along the middle cavity of the drill rod. The control component 4 includes a control rod 41. The control rod 41 is connected to the end of the camera 21. The cable used by the camera 21 is routed through the protective tube 3. The protective tube 3 is connected to the end of the camera 21 component away from the camera 21, providing additional protection for the camera 21. The control rod 41 is not only connected to the end of the camera 21, but also has the cable of the camera 21 built in, realizing effective management and protection of the cable. The protective tube 3 enhances the durability of the camera 21 and reduces the risk of damage caused by the external environment. The design of the control rod 41 simplifies the routing of the cable, avoids the entanglement and damage of the cable during the drilling process, and improves the reliability and service life of the system.

[0032] Please refer to the instruction manual Figure 2 To Attachment Figure 8, further, the mounting shell 22 includes a detection chamber 221 and a control chamber 222. The diameter of the detection chamber 221 is larger than the diameter of the control chamber 222. The detection chamber 221 and the control chamber 222 are separated by a partition 223. The camera 21 is slidably connected in the detection chamber 221. The control rod 41 passes through the partition 223 to the control chamber 222. The control assembly 4 also includes an elastic member 42 and a control sheet 43. The control sheet 43 is coaxially arranged on the control rod 41, and the control rod 41 slides in the control chamber 222. The elastic member 42 is a spring, and the elastic member 42 is arranged in the control chamber 222 so that the camera 21 always has a tendency to move in the direction of the control chamber 222. The mounting shell 22 is divided into a detection chamber 221 and a control chamber 222 by the partition 223, the camera 21 slides in the detection chamber 221, and the control rod 41 passes through the partition 223 to the control chamber 222. The combination of the elastic member 42 and the control sheet 43 makes the camera 21 have a tendency to move toward the control cavity 222, and the camera 21 is precisely controlled by sliding the control rod 41. This makes the control of the camera 21 more precise and flexible, and the setting of the elastic member 42 ensures that the camera 21 can automatically reset when not subject to external force, thereby improving the stability and response speed of the system.

[0033] Please refer to the instruction manual Figure 2 To Attachment Figure 8 Furthermore, since it is necessary to use water to remove the crushed slag in the well during the drilling process, or to inject mud to make the inner wall more stable, so that the inner wall forms a mud wall. Therefore, the drill bit body 1 is provided with a plurality of injection channels 12. It is used to inject mud or flush water during the drilling process. The injection channel 12 is inclined, starting from the side wall of the drill bit body 1 and passing through the bottom of the drill bit body 1. When flushing water is used, a nozzle can be installed at the outlet of the injection channel 12 to prevent impurities from clogging the channel.

[0034] Please refer to the instruction manual Figure 2 To Attachment Figure 8 Furthermore, the drill body 1 is also provided with a plurality of clean water channels 13. The clean water channels 13 are connected to the end of the mounting groove 11. The mounting groove 11 is flushed with clean water to ensure a clear field of view of the camera 21. The clean water channels 13 are vertically penetrated, and the clean water channels 13 are inclinedly arranged at the inner wall of the mounting groove 11 and are connected to the inner space of the mounting groove 11. The clean water channels 13 are directed toward the outer wall of the cover plate 231 so as to fully flush the inside of the mounting groove 11.

[0035] Please refer to the instruction manual Figure 2 To Attachment Figure 8Furthermore, the directional drilling bit also includes an adapter box 6. The adapter box 6 is a cylindrical shell, and one end of the adapter box 6 passes through and covers the bottom of the drill bit body 1, that is, it covers the bottom of the drill bit body 1. The adapter box 6 can rotate relative to the drill bit body 1. A concentric separation ring tube 61 is provided in the adapter box 6, and the separation ring tube 61 divides the internal space of the adapter box 6 into a clean water chamber 62 and a liquid chamber 63. Because the injection channel 12 and the clean water channel 13 both pass through the drill bit body 1, the injection channel 12 is connected to the liquid chamber 63, and the clean water channel 13 is connected to the clean water chamber 62. The clean water chamber 62 is connected to the clean water pipe 621, and the injection chamber is connected to the injection pipe 631. The clean water pipe 621 and the injection pipe 631 are both inserted into the protective tube 3 and routed through the protective tube 3. The protective tube 3 passes through the adapter box 6 and is threadedly connected to the adapter box 6. The adapter box 6 divides the space at the bottom of the drill body 1 into a clean water chamber 62 and a liquid chamber 63 through a concentric separation ring 61, and connects the clean water pipe 621 and the injection pipe 631 respectively. The connecting pipe runs through the adapter box 6 and is connected to the adapter box 6, realizing the independent supply of mud or flushing water and clean water. This makes the supply of mud and clean water more convenient and efficient, while avoiding confusion and mutual influence between the two, ensuring the smooth progress of the drilling operation.

[0036] Please refer to the instruction manual Figure 2 To Attachment Figure 8 Furthermore, the protective cover 23 includes two cover plates 231, and the ends of the two cover plates 231 that are away from each other are rotatably connected to the mounting housing 22. The protective cover 23 is composed of two cover plates 231 that rotate with each other and are connected to the bottom of the camera 21 through the linkage component 5. When the camera 21 moves, the linkage rod 51 drives the cover plate 231 to open or close the mounting slot 11. The stability and sealing of the protective cover 23 are enhanced, and the introduction of the linkage component 5 makes the opening and closing of the protective cover 23 more automated and convenient. The protection effect of the camera 21 component is improved, and the risk of damage caused by the intrusion of external debris is reduced.

[0037] Please refer to the instruction manual Figure 2 To Attachment Figure 8 Furthermore, the linkage assembly 5 includes two linkage rods 51, one end of the linkage rod 51 is hinged to the bottom of the camera 21, and the other end is hinged to the corresponding cover plate 231.

[0038] Please refer to the instruction manual Figure 2 To Attachment Figure 8Furthermore, the end of the linkage rod 51 is rotatably connected to a clearance block 52, and a clearance groove 2311 is provided on the cover plate 231 for the clearance block 52 to slide. The linkage component 5 includes two linkage rods 51, one end of which is hinged to the bottom of the camera 21, and the other end is hinged to the corresponding cover plate 231. The end of the linkage rod 51 is also rotatably connected to a clearance block 52, and the cover plate 231 is provided with a clearance groove 2311 for the clearance block 52 to slide. The clearance groove 2311 is horizontally arranged as a straight groove. The arrangement of the linkage rod 51 and the clearance groove 2311 makes the linkage process more stable and smooth. The synchronous movement between the protective cover 23 and the camera 21 is ensured, and the overall coordination and stability of the system are improved. At the same time, the arrangement of the clearance block 52 and the clearance groove 2311 reduces the friction and resistance during the linkage process, and extends the service life of the linkage component 5.

[0039] The implementation principle of a directional drilling bit with a camera in the embodiment of the present application is: The protective cover 23 is automatically opened or closed according to the movement state of the camera 21 through the control component 4, protecting the camera 21 from damage by debris during the drilling process. This not only improves the visualization ability of the drill bit during the drilling process, but also ensures the stability and safety of the camera 21 component, allowing the operator to observe the drilling situation in real time, improving the work efficiency and accuracy. In addition, the camera 21 can be flushed through the clean water channel 13 to maintain the clarity of the camera 21 field of view.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A directional drilling bit with a camera, characterized in that: The drill body (1) and a camera (21) assembly are provided, wherein the drill body (1) is provided with mounting grooves (11) along both ends of the axis, and the camera (21) assembly is arranged in the mounting grooves (11); the camera (21) assembly comprises a camera (21), a mounting shell (22), a protective cover (23) and a control assembly (4); the camera (21) is slidably connected to the mounting shell (22); the protective cover (23) is arranged at one end of the mounting shell (22) and is used to control the connection or closure between the mounting shell (22) and the mounting groove (11); the camera (21) is provided with a linkage assembly (5) which drives the protective cover (23) to open or close after movement; the mounting shell (22) and the drill body (1) rotate relative to each other; and the control assembly (4) is used to control the sliding of the camera (21).

2. A directional drilling bit with a camera according to claim 1, characterized in that: The directional drilling bit further comprises a protective tube (3); the protective tube (3) is connected to an end of the mounting housing (22) away from the camera (21); the control assembly (4) comprises a control rod (41); the control rod (41) is connected to the end of the camera (21).

3. A directional drilling bit with a camera according to claim 2, characterized in that: The mounting shell (22) comprises a detection chamber (221) and a control chamber (222); the detection chamber (221) and the control chamber (222) are separated by a partition (223); the camera (21) is slidably connected to the detection chamber (221); the control rod (41) passes through the partition (223) to the control chamber (222); the control assembly (4) further comprises an elastic member (42) and a control plate (43); the control plate (43) is coaxially arranged on the control rod (41), the control rod (41) slides in the control chamber (222), and the elastic member (42) is arranged in the control chamber (222) so that the camera (21) always has a tendency to move in the direction of the control chamber (222).

4. A directional drilling bit with a camera according to claim 3, characterized in that: The drill bit body (1) is provided with a plurality of liquid injection channels (12).

5. A directional drilling bit with a camera according to claim 4, characterized in that: The drill bit body (1) is also provided with a plurality of clean water channels (13); the clean water channels (13) are connected to the end of the installation groove (11).

6. A directional drilling bit with a camera according to claim 5, characterized in that: The protective tube (3) penetrates through the drill body (1) and extends outward; and the cables used by the camera (21) are routed through the protective tube (3).

7. A directional drilling bit with a camera according to claim 6, characterized in that: The directional drill bit further comprises an adapter box (6); one end of the adapter box (6) passes through and covers the bottom of the drill bit body (1); the adapter box (6) rotates relative to the drill bit body (1); the injection channel (12) and the clean water channel (13) both pass through the drill bit body (1); the adapter box (6) is divided into a clean water chamber (62) and a liquid passage chamber (63) by a concentric dividing ring tube (61); the injection channel (12) is connected to the liquid passage chamber (63); the clean water channel (13) is connected to the clean water chamber (62); the clean water chamber (62) is connected to a clean water pipe (621); the injection chamber is connected to the injection pipe (631); the protective pipe (3) passes through the adapter box (6) and is connected to the adapter box (6).

8. A directional drilling bit with a camera according to claim 7, characterized in that: The protective cover (23) comprises two cover plates (231), and ends of the two cover plates (231) that are away from each other are rotatably connected to the mounting shell (22).

9. A directional drilling bit with a camera according to claim 8, characterized in that: The linkage assembly (5) comprises two linkage rods (51), one end of the linkage rod (51) being hinged to the bottom of the camera (21), and the other end of the linkage rod (51) being hinged to the corresponding cover plate (231).

10. A directional drilling bit with a camera according to claim 9, characterized in that: The end of the linkage rod (51) is rotatably connected to a clearance block (52), and the cover plate (231) is provided with a clearance groove (2311) for the clearance block (52) to slide.

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