A telescopic speed-up drilling tool

Abstract

This utility model relates to a telescopic speed-up drilling tool, including an outer sleeve, with a drill bit disposed at the front end of the outer sleeve; inside the outer sleeve, a spiral rod, a telescopic sleeve, and a compression sleeve are arranged sequentially; a telescopic control rod is disposed at the front end of the spiral rod, and a driving groove is arranged around the surface of the telescopic control rod; the telescopic control rod is disposed in the tail end of the telescopic sleeve, and a limiting roller block that cooperates with the driving groove is disposed at the tail end of the telescopic sleeve; the front end of the telescopic sleeve is disposed in the compression sleeve, forming a compression groove between the front end of the telescopic sleeve and the drill bit; a spring is also disposed in the gap between the outer sleeve and the compression sleeve, and a limiting ring is disposed at one end of the spring; it can reduce the difficulty of rock breaking, improve drilling efficiency; remove mud from the drill bit and cool the drill bit, thereby improving the drilling efficiency and service life of the drill bit.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and in particular to a telescopic speed-up drilling tool. Background Technology

[0002] In deep drilling operations, as the well depth increases, the in-situ stress on the rock also increases, which significantly increases the difficulty of rock breaking. In traditional methods, to improve drilling speed, the energy supplied from the surface is usually increased, such as by increasing drilling pressure and rotational speed. However, this method often causes severe vibration of the drill string, which not only greatly reduces drilling efficiency but may also lead to serious safety accidents. Therefore, it is particularly important to find a new method to accelerate deep drilling that can both ensure safety and improve efficiency. Utility Model Content

[0003] To overcome the shortcomings of the existing problems mentioned above, this utility model provides a telescopic speed-up drilling tool, which can effectively improve drilling efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a telescopic speed-up drill bit, including an outer sleeve, with a drill bit disposed at the front end of the outer sleeve; a spiral rod, a telescopic sleeve, and a compression sleeve are sequentially disposed inside the outer sleeve; a telescopic control rod is disposed at the front end of the spiral rod, and a driving groove is disposed around the surface of the telescopic control rod, the driving groove being configured as an S-shaped path structure; the telescopic control rod is disposed in the tail end of the telescopic sleeve, and a limiting roller block cooperating with the driving groove is disposed at the tail end of the telescopic sleeve; the front end of the telescopic sleeve is disposed inside the compression sleeve and cooperates with the compression sleeve, forming a compression groove between the front end of the telescopic sleeve and the drill bit; a spring is also disposed in the gap between the outer sleeve and the compression sleeve, and a limiting ring is disposed at one end of the spring, the limiting ring being engaged with the outside of the telescopic sleeve.

[0005] Preferably, the upper section of the telescopic control rod is provided with a fixing ring, the inner side of which is provided with a bearing and the outer side with a water passage hole.

[0006] Preferably, the upper half of the telescopic sleeve is provided with an oblong water inlet hole.

[0007] Preferably, a waterproof ring is provided between the compression sleeve and the drill bit.

[0008] Preferably, the end of the telescopic sleeve is provided with a one-way valve head.

[0009] The beneficial effects of this utility model are: it can reduce the difficulty of rock breaking and improve drilling efficiency; it can remove mud from the drill bit and cool the drill bit, thereby improving the drilling efficiency and service life of the drill bit. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the compression sleeve; Figure 3 This is a schematic diagram of the fixed ring structure; Figure 4 This is a schematic diagram of the unfolded structure of the driving groove; In the diagram, 1. Outer sleeve; 2. Drill bit; 3. Spiral rod; 4. Telescopic sleeve; 41. Limiting roller; 42. Water inlet; 43. One-way valve head; 5. Compression sleeve; 6. Telescopic control rod; 61. Drive groove; 7. Compression groove; 8. Spring; 9. Fixing ring; 91. Bearing; 92. Water passage hole; 10. Waterproof ring; 11. Limiting ring. Detailed Implementation

[0012] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0013] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0014] according to Figures 1-4 As shown, a telescopic speed-up drill bit includes an outer sleeve 1, with a drill bit 2 disposed at its front end. Inside the outer sleeve 1, a helical rod 3, a telescopic sleeve 4, and a compression sleeve 5 are sequentially arranged. A telescopic control rod 6 is disposed at the front end of the helical rod 3, and a driving groove 61 is arranged around the surface of the telescopic control rod 6. The driving groove 61 has an S-shaped path structure. The telescopic control rod 6 is disposed in the tail end of the telescopic sleeve 4, and a limiting roller block 41 that cooperates with the driving groove 61 is disposed at the tail end of the telescopic sleeve 4. The front end of the telescopic sleeve 4 is disposed inside the compression sleeve 5 and interacts with the compression sleeve 5. The telescopic sleeve 5 cooperates to form a compression groove 7 between the front end of the telescopic sleeve 4 and the drill bit 2. The drill bit 2 has a corresponding water eye structure inside, which is connected to the compression groove 7 to form a liquid channel. A spring 8 is also provided in the gap between the outer sleeve 1 and the compression sleeve 5. A limit ring 11 is also provided at one end of the spring 8. The limit ring 11 is engaged with the outside of the telescopic sleeve 4. The setting of the limit ring 11 can limit the telescopic sleeve 4 and reduce the shaking of the telescopic sleeve 4 during the telescopic process. At the same time, the limit ring 11 cooperates with the spring 8 to assist the telescopic movement of the telescopic sleeve 4.

[0015] The upper section of the telescopic control rod 6 is provided with a fixing ring 9. The inner side of the fixing ring 9 is provided with a bearing 91, and the outer side is provided with a water passage hole 92. The fixing ring 9 is fixedly installed on the outer sleeve 1 to fix the end position of the spiral rod 3. The bearing 91 facilitates the rotation of the telescopic control rod 6, and the water passage hole 92 is used for drilling fluid to pass through.

[0016] The upper half of the telescopic sleeve is provided with an oblong water inlet hole 42.

[0017] A waterproof ring 10 is provided between the compression sleeve 5 and the drill bit 2.

[0018] The end of the telescopic sleeve 4 is provided with a one-way valve head 43.

[0019] In practical application, during drilling, drilling fluid is injected into the outer sleeve 1 and flows within it. When the drilling fluid flows through the auger 3, it drives the auger 3 and the telescopic control rod 6 to rotate. As the telescopic control rod 6 rotates, the limiting roller 41 on the telescopic sleeve 4 moves along the S-shaped drive groove 61, thereby causing the telescopic sleeve 4 to perform a vertical telescopic movement. Simultaneously, drilling fluid enters the telescopic sleeve 4 through the water inlet 42 and then flows into the compression tank 7. The drilling fluid is ejected through the water eye structure on the drill bit 2. Due to the telescopic movement of the telescopic sleeve 4, it compresses the drilling fluid in the compression tank 7 during ejection, causing the drilling fluid to be ejected in a pressurized manner, forming a pulse jet. This jetting method generates an ultra-high pressure jet, which helps to break rocks and also alleviates the mud packing phenomenon on the drill bit, reduces the difficulty of rock breaking, and improves drilling efficiency. At the same time, the telescopic movement of the telescopic sleeve 4 can also reduce the vibration of the drill string.

[0020] This design is ingenious. The compression effect of the telescopic sleeve allows the drilling fluid to be ejected at a higher pressure, which helps to break hard rocks. By flushing the soil in front, it reduces the difficulty of breaking rocks and improves drilling efficiency. The pulse jet also helps to remove mud from the drill bit and cool it down, allowing the drill bit to maintain a high-efficiency working state for a longer period of time, thus improving the drilling efficiency and service life of the drill bit.

[0021] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A telescoping rate of penetration drill, characterized by: The device includes an outer sleeve (1), with a drill bit (2) at its front end; the inner side of the outer sleeve (1) is sequentially provided with a spiral rod (3), a telescopic sleeve (4), and a compression sleeve (5); the front end of the spiral rod (3) is provided with a telescopic control rod (6); the surface of the telescopic control rod (6) is surrounded by a driving groove (61), the driving groove (61) is configured with an S-shaped path structure; the telescopic control rod (6) is located in the tail end of the telescopic sleeve (4); the telescopic sleeve (4) The tail end of the telescopic sleeve (4) is provided with a limiting roller block (41) that cooperates with the drive groove (61); the front end of the telescopic sleeve (4) is provided inside the compression sleeve (5) and cooperates with the compression sleeve (5), forming a compression groove (7) between the front end of the telescopic sleeve (4) and the drill bit (2); a spring (8) is also provided in the gap between the outer sleeve (1) and the compression sleeve (5), and a limiting ring (11) is also provided at one end of the spring (8), and the limiting ring (11) is engaged with the outside of the telescopic sleeve (4).

2. A telescopic speed-up drill according to claim 1, characterized in that: The upper section of the telescopic control rod (6) is provided with a fixing ring (9), the inner side of the fixing ring (9) is provided with a bearing (91), and the outer side is provided with a water passage hole (92).

3. A telescoping speed-up drill tool according to claim 1, wherein: The upper half of the telescopic sleeve is provided with an oblong water inlet hole (42).

4. A telescoping speed-up drill tool according to claim 1, wherein: A waterproof ring (10) is provided between the compression sleeve (5) and the drill bit (2).

5. A telescoping speed-up drill tool according to claim 1, wherein: The end of the telescopic sleeve (4) is provided with a one-way valve head (43).

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