Turbodrill for directional drilling construction

Abstract

The utility model discloses a turbodrill for directional drilling construction, which comprises a barrel body, an outer drill bit and a bottom drill bit, a balance box is arranged in the barrel body, a rotating shaft is arranged at the bottom of the balance box, a bottom butt joint assembly is arranged at the bottom end of the rotating shaft, the bottom butt joint assembly comprises a butt joint rod and a clamping rod, the butt joint rod is in butt joint with the clamping rod, and the clamping rod is in butt joint with the outer drill bit. The bottom of the butt joint rod is fixedly connected with the bottom drill bit. According to the utility model, the outer butt-joint assembly and the bottom butt-joint assembly are arranged, the outer butt-joint assembly fixes the outer drill bit on the butt-joint ring in a clamping manner, the bottom butt-joint assembly fixes the bottom drill bit on the rotating shaft in a clamping manner by connecting the bottom butt-joint assembly with the bottom fixing bolt, and the bottom drill bit can be arranged on the rotating shaft only by rotating the bottom fixing bolt on the bottom butt-joint assembly; after the butt-joint bolt is taken down, the bottom drill bit is moved downwards to drive the clamping rod to be separated from the butt-joint rod, then the manual butt-joint bolt is rotated to be separated from the threaded butt-joint hole, then the rotating ring is rotated, the rotating ring can drive the clamping head to be separated from the clamping groove, and therefore the outer drill bit can be taken down easily.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a turbine drill for directional drilling construction. Background Art

[0002] The turbodrill used in directional drilling construction is a device that uses high-pressure fluid to drive the rotation of turbine blades, thereby driving the rotation of the drill bit for drilling operations. It is an efficient drilling tool that is particularly suitable for drilling deep wells and horizontal wells and can adapt to drilling in complex geological conditions. It mainly consists of turbine blades, rotors, stators and drill bits.

[0003] The drill bit is one of the most important parts of the entire turbodrill. After searching, the Chinese patent CN210685856U is a Chinese patent, and the patent name is a turbodrill for oil field drilling. The drill uses a double-tube structure eddy current drive device, and uses the reverse rotating inner tube and main shaft to drive the bottom drill bit and the outer drill bit to cut the rock formation in opposite directions, and automatically balances the rock breaking torque of both sides, decomposing the high drilling speed of the traditional turbodrill into two relative reverse drilling speeds of the bottom drill bit and the outer drill bit, so that the absolute drilling speed of the bottom drill bit and the outer drill bit is reduced, the output torque is increased, and it is more suitable for hard geological conditions. In addition, the utility model is By combining a turbine drill with a roller drill bit with an efficient flow channel system, the drilling fluid that drives the turbine to rotate is discharged through the flow channel set in the outer drill bit, changing the direction of the drilling fluid flow channel, so that the high-pressure liquid flows longitudinally without causing erosion on the well wall. In addition, the continuously pumped drilling fluid can take away a large amount of heat from the drill bit, thereby increasing the service life of the drill bit, thereby solving the problems raised in the above-mentioned background technology. Since the drill bit is a wear part, it needs to be replaced. The outer drill bit and the bottom drill bit in the existing technology are both fixed, which makes it difficult to remove them easily, affecting subsequent maintenance. If they are not replaced, it will also affect the drilling efficiency.

[0004] Therefore, how to provide a turbodrill for directional drilling construction is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0005] One purpose of the present invention is to provide a turbodrill for directional drilling construction, which solves the problem in the prior art that both the outer drill bit and the bottom drill bit are fixed, making them difficult to remove, thus affecting subsequent maintenance and drilling efficiency.

[0006] According to an embodiment of the present invention, a turbodrill for directional drilling construction includes a barrel, an outer drill bit, and a bottom drill bit. A balance box is provided inside the barrel, a rotating shaft is provided at the bottom of the balance box, and a bottom docking assembly is provided at the bottom end of the rotating shaft. The bottom docking assembly includes a docking rod and a clamping rod. The docking rod is docked with the clamping rod, and the bottom of the docking rod is fixedly connected to the bottom drill bit.

[0007] The top of the outer drill bit is provided with a sleeve ring, the end surface of the cylinder is provided with an external docking assembly, the external docking assembly includes a docking ring, and the sleeve ring is movably sleeved on the docking ring.

[0008] The bottom docking assembly also includes a side slot, a placement hole, a threaded hole and a bottom fixing bolt. The side slot is opened on the side of the docking rod, the connecting rod is movably connected to the docking rod through the side slot, the threaded hole is opened on the end face of the docking rod, the placement hole is opened on the bottom drill bit to connect the top and bottom of the bottom drill bit, the bottom fixing bolt is movable in the placement hole, and one end of the bottom fixing bolt passes through the placement hole and extends to the inside of the threaded hole and is threadedly connected to the threaded hole.

[0009] A shielding assembly is provided on the inner wall of the placement hole, and the shielding assembly includes a limiting groove and a shielding plate. The limiting groove is provided on the inner wall of the placement hole, and the shielding plate moves inside the limiting groove. The shielding assembly also includes two groups of magnets with opposite polarities that attract each other, one magnet is provided on the inner wall of the placement hole, and the other magnet is provided on the surface of the shielding plate near the outermost position, and the two magnets attract each other through magnetism.

[0010] The external docking assembly also includes an outer square groove, an outer clamping block, an inner clamping block and an inner square groove. The outer direction groove is opened on the side of the docking ring, the inner square groove is opened on the inner wall of the docking ring, the outer clamping block is clamped inside the outer square groove, and the inner clamping block is movable inside the inner square groove. The docking assembly also includes a movable groove, a clamping groove, a clamping head and a swivel. The movable groove is opened on the inner wall of the docking ring, the clamping groove is opened on the inner clamping block, the clamping groove and the movable groove are connected to each other, the clamping head is movable inside the movable groove, and a part of the clamping head is clamped inside the clamping groove, and the swivel is fixed on the clamping head.

[0011] Threaded docking holes are provided on the rotating ring at positions corresponding to the movable grooves on the docking ring and on the outer clamping block, and manual docking bolts are provided inside the threaded docking holes.

[0012] Two hand levers are arranged on the inner wall of the docking ring.

[0013] The beneficial effects of the utility model are:

[0014] By arranging an outer docking assembly and a bottom docking assembly, the outer docking assembly clamps and fixes the outer drill bit on the docking ring, and the bottom docking assembly sets the bottom drill bit on the rotating shaft by means of clamping and connecting with the bottom fixing bolt. It is only necessary to rotate the bottom fixing bolt on the bottom docking assembly, remove the docking bolt and move the bottom drill bit downward to drive the clamping rod to separate from the docking rod, and then rotate the manual docking bolt to separate it from the threaded docking hole and then rotate the rotating ring. The rotating ring will drive the clamping head to separate from the clamping groove, so that the outer drill bit can be easily removed, which solves the problem in the prior art that the outer drill bit and the bottom drill bit are both fixed, making it difficult to remove them, thereby affecting subsequent maintenance and drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 The utility model is a schematic overall three-dimensional diagram of a turbodrill tool for directional drilling construction.

[0017] Figure 2 This is a cross-sectional perspective diagram of the position of the external docking assembly of a turbine drill tool for directional drilling construction proposed by the utility model.

[0018] Figure 3 This is a cross-sectional perspective diagram of the position of the bottom docking assembly of a turbine drill tool for directional drilling construction proposed by the utility model.

[0019] Figure 4 This is a perspective cross-sectional view from the other side of the bottom docking assembly and the outer docking assembly of a turbine drill tool for directional drilling construction proposed by the present invention.

[0020] Figure 5 This is a partial three-dimensional schematic diagram of the positions of the docking ring and the docking rod in a turbodrill tool for directional drilling construction proposed by the utility model.

[0021] The attached figures indicate: 1. Cylinder; 2. Outer drill bit; 3. Bottom drill bit; 4. Balance box; 5. Rotating shaft; 6. Bottom docking assembly; 7. Docking rod; 8. Clamping rod; 9. Docking ring; 10. Side clamping groove; 11. Placement hole; 12. Threaded hole; 13. Bottom fixing bolt; 14. Shielding assembly; 15. Limiting groove; 16. Shielding plate; 17. Magnet; 18. Outer square groove; 19. Outer clamping block; 20. Inner clamping block; 21. Inner square groove; 22. Movable groove; 23. Clamping groove; 24. Clamp; 25. Swivel; 26. Threaded docking hole; 27. Manual docking bolt; 28. Hand lever; 29. ​​Sleeve ring. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0023] refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5, including a cylinder 1, an outer drill bit 2 and a bottom drill bit 3. A balance box 4 is provided inside the cylinder 1, and a rotating shaft 5 is provided at the bottom of the balancing box 4. The rotating shaft 5 is used to drive the shaft component of the bottom drill bit 3 to rotate. A bottom docking assembly 6 is provided at the bottom end of the rotating shaft 5. The bottom docking assembly 6 includes a docking rod 7 and a clamping rod 8. The docking rod 7 is docked with the clamping rod 8, and the bottom of the docking rod 7 is fixedly connected to the bottom drill bit 3. The bottom docking assembly 6 also includes a side slot 10, a placement hole 11, a threaded hole 12 and a bottom fixing bolt 13. The side slot 10 is opened on the side of the docking rod 7, and the clamping rod 8 is movably sleeved on the docking rod 7 through the side slot 10. The threaded hole 12 is opened on the end face of the docking rod 7, and the placement hole 11 is opened on the bottom drill bit 3 to connect the top and bottom of the bottom drill bit 3. The bottom fixing bolt 13 is movable in the placement hole 11, and one end of the bottom fixing bolt 13 passes through the placement hole 11 and extends to the inside of the threaded hole 12 and is threadedly connected to the threaded hole 12 Then, a shielding assembly 14 is provided on the inner wall of the placement hole 11, and the shielding assembly 14 includes a limiting groove 15 and a shielding plate 16. The limiting groove 15 is provided on the inner wall of the placement hole 11, and the shielding plate 16 moves inside the limiting groove 15. The shielding assembly 14 also includes two sets of magnets 17 with opposite poles attracting each other, one magnet 17 is provided on the inner wall of the placement hole 11, and the other magnet 17 is provided on the surface of the shielding plate 16 near the outermost position. The two magnets 17 attract each other by magnetism. During operation, the magnet 17 on the shielding plate 16 is first moved to separate the magnet 17 from the other magnet 17. There is a groove on the inner wall of the placement groove corresponding to the position of the magnet 17 for placing the magnet 17. When the magnet 17 drives the shielding plate 16 to move and the magnet 17 is placed in the groove, the baffle is removed, and then the bottom fixing bolt 13 is rotated to separate the bottom fixing bolt 13 from the threaded hole 12, so that the bottom drill bit 3 can be easily removed;

[0024] refer to Figure 2 Figure 3 、 Figure 4 and Figure 5The top of the outer drill bit 2 is provided with a sleeve ring 29, and the end face of the cylinder 1 is provided with an external docking assembly, which includes a docking ring 9. The sleeve ring 29 is movably sleeved on the docking ring 9. The external docking assembly also includes an outer square groove 18, an outer clamping block 19, an inner clamping block 20 and an inner square groove 21. The outer direction groove is opened on the side of the docking ring 9, and the inner square groove 21 is opened on the inner wall of the docking ring 9. The outer clamping block 19 is stuck in the inner side of the outer square groove 18, and the inner clamping block 20 is movable in the inner square groove. The inside of the shaped groove 21 is stabilized by the internal and external clamping method, so that the ring is not easy to rotate and is clamped very stably. The docking assembly also includes a movable groove 22, a clamping groove 23, a clamping head 24 and a swivel 25. The movable groove 22 is opened on the inner wall of the docking ring 9, the clamping groove 23 is opened on the inner clamping block 20, the clamping groove 23 and the movable groove 22 are communicated with each other, the clamping head 24 is movable in the inside of the movable groove 22, and a part of the clamping head 24 is clamped in the inside of the clamping groove 23, and the swivel 25 is connected to the movable groove 22. 5 is fixed on the clamping head 24. Two manual levers 28 are provided on the inner wall of the docking ring 9. A threaded docking hole 26 is provided on the swivel 25 at a position corresponding to the movable groove 22 on the docking ring 9 and on the outer clamping block 19. A manual docking bolt 27 is provided inside the threaded docking hole 26 to further reinforce the swivel 25 and stabilize the position of the swivel 25. During operation, after the bottom drill bit 3 is removed, the manual docking bolt 27 is rotated, and the manual docking bolt 27 rotates to separate from the threaded docking hole 26. The outer drill bit 2 can be removed by turning the hand lever 28 to drive the swivel 25 to rotate. The rotation of the swivel 25 separates the clamping head 24 from the clamping groove 23, so that the clamping head 24 shrinks into the movable groove 22. At this time, the outer drill bit 2 can be removed, and the bottom drill bit 3 and the outer joint can be removed for replacement. When installing, you only need to operate in the above manner. It should be noted that when the outer docking assembly is docked, the outer clamping block 19 needs to be clamped in the outer square groove 18, and the inner clamping block 20 needs to be clamped in the outer square groove 18.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A turbodrill for directional drilling, characterized in that: The invention comprises a cylinder (1), an outer drill bit (2) and a bottom drill bit (3); a balance box (4) is provided inside the cylinder (1); a rotating shaft (5) is provided at the bottom of the balance box (4); a bottom docking assembly (6) is provided at the bottom end of the rotating shaft (5); the bottom docking assembly (6) comprises a docking rod (7) and a clamping rod (8); the docking rod (7) is docked with the clamping rod (8); and the bottom of the docking rod (7) is fixedly connected to the bottom drill bit (3); The top of the outer drill bit (2) is provided with a sleeve ring (29), and the end surface of the cylinder (1) is provided with an external docking assembly, which includes a docking ring (9), and the sleeve ring (29) is movably sleeved on the docking ring (9).

2. A turbodrill for directional drilling construction according to claim 1, characterized in that: The bottom docking assembly (6) further comprises a side slot (10), a placement hole (11), a threaded hole (12) and a bottom fixing bolt (13). The side slot (10) is provided on the side of the docking rod (7). The connecting rod (8) is movably sleeved on the docking rod (7) through the side slot (10). The threaded hole (12) is provided on the end face of the docking rod (7). The placement hole (11) is provided on the bottom drill bit (3) to connect the top and bottom of the bottom drill bit (3). The bottom fixing bolt (13) is movable in the placement hole (11). One end of the bottom fixing bolt (13) passes through the placement hole (11) and extends to the inside of the threaded hole (12) to be threadedly connected to the threaded hole (12).

3. The turbodrill for directional drilling construction according to claim 2, characterized in that: A shielding assembly (14) is provided on the inner wall of the placement hole (11), and the shielding assembly (14) includes a limiting groove (15) and a shielding plate (16). The limiting groove (15) is provided on the inner wall of the placement hole (11), and the shielding plate (16) moves inside the limiting groove (15). The shielding assembly (14) also includes two groups of magnets (17) with opposite polarities that attract each other. One magnet (17) is provided on the inner wall of the placement hole (11), and the other magnet (17) is provided on the surface of the shielding plate (16) near the outermost position. The two magnets (17) attract each other through magnetism.

4. The turbodrill tool for directional drilling construction according to claim 3, characterized in that: The outer docking assembly further comprises an outer square groove (18), an outer clamping block (19), an inner clamping block (20) and an inner square groove (21). The outer direction groove is arranged on the side of the docking ring (9), the inner square groove (21) is arranged on the inner wall of the docking ring (9), the outer clamping block (19) is clamped inside the outer square groove (18), and the inner clamping block (20) is movable inside the inner square groove (21). The docking assembly further comprises a movable groove (22), a clamping groove (23), a clamping head (24) and a swivel (25). The movable groove (22) is arranged on the inner wall of the docking ring (9), the clamping groove (23) is arranged on the inner clamping block (20), the clamping groove (23) and the movable groove (22) are communicated with each other, the clamping head (24) is movable inside the movable groove (22), and a part of the clamping head (24) is clamped inside the clamping groove (23), and the swivel (25) is fixed on the clamping head (24).

5. The turbodrill tool for directional drilling construction according to claim 4, characterized in that: A threaded docking hole (26) is provided on the rotating ring (25) at a position corresponding to the movable groove (22) on the docking ring (9) and on the outer clamping block (19), and a manual docking bolt (27) is provided inside the threaded docking hole (26).

6. The turbodrill tool for directional drilling construction according to claim 5, characterized in that: Two hand levers (28) are provided on the inner wall of the docking ring (9).

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