Novel drill rod structure

Abstract

The utility model relates to the technical field of drill rod technologies, in particular to a novel drill rod structure which comprises a drill rod body, a liquid supply hole is formed in the drill rod body, a flow stopping sliding block matched with an inner cavity of a containing sliding groove is installed in the inner cavity of the containing sliding groove in a sliding mode, and a thrust spring is arranged on the side face of the flow stopping sliding block. The multiple thrust springs push the multiple flow stopping sliding blocks to be gathered together to form a circular structure. An inserting boss is fixedly arranged in the middle of the annular table and inserted into an inner cavity of the bearing hole through threads. The drill rod has the beneficial effects that the annular table is fixedly installed at one end of the drill rod body, the multiple storage sliding grooves distributed in an annular array are formed in the end faces, close to each other, of the annular table and the drill rod body, when the drill rod body rotates, the multiple flow stopping sliding blocks are separated from each other under the action of centrifugal force, and when the rotating speed of the drill rod body is increased, the flow stopping sliding blocks are separated; and the flow of the cooling liquid supplied by the liquid supply hole can be adaptively increased, so that the cooling effect on the drill rod body and the drill bit is improved.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, specifically a novel drill pipe structure. Background Technology

[0002] A drill pipe is a steel pipe with threads at the end, used to connect the drilling rig's surface equipment to the drilling equipment or bottom hole assembly located at the bottom of the well. The purpose of the drill pipe is to transport drilling mud to the drill bit and, together with the drill bit, raise, lower, or rotate the bottom hole assembly.

[0003] In the prior art, Chinese utility model publication number CN205743739U discloses a drill pipe for oil drilling, which can effectively cool the drill pipe by setting water pipes, thereby further improving the service life of the drill pipe.

[0004] Currently, after the drill pipe is installed and connected, the opening and closing of the internal cavity cannot be controlled from the outside, making it difficult for the external coolant to adaptively adjust its supply according to actual working conditions. Therefore, this invention proposes a novel drill pipe structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a novel drill pipe structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel drill pipe structure, the novel drill pipe structure comprising:

[0007] The drill pipe body has a liquid supply hole inside. One end of the drill pipe body is fitted with an annular platform. The annular platform and the drill pipe body have multiple receiving grooves arranged in a ring array on their respective end faces. The receiving grooves are along the radial direction of the annular platform. The inner cavity of the receiving groove is slidably fitted with a flow-stopping slider. The side of the flow-stopping slider is provided with a thrust spring. Multiple thrust springs push multiple flow-stopping sliders to gather together to form a circular structure.

[0008] The other end of the drill rod body is provided with a receiving hole, and the middle of the annular platform is fixedly provided with a plug-in boss, which is a hollow structure. The plug-in boss is threaded into the inner cavity of the receiving hole, and the inner cavity of the plug-in boss is connected to the liquid supply hole.

[0009] Preferably, the drill pipe body has an anti-rotation slot on its side, and an anti-rotation block is fixed on the surface of the annular platform. The anti-rotation block is movably inserted into and adapted to the inner cavity of the anti-rotation slot, and the annular platform and the drill pipe body are fixedly connected by fastening screws.

[0010] Preferably, the surface of the insertion boss is provided with a relief groove corresponding to the fastening screw, and the inner wall of the insertion boss is fixed with a plurality of spiral blades arranged in a ring array.

[0011] Preferably, the surface of the flow-stopping slider near the drill rod body has a recessed groove, and multiple recessed grooves are joined together to form a circular groove, with a sealing gasket between two adjacent recessed grooves.

[0012] Preferably, the side of the flow-stopping slider has a receiving hole in the middle, the inner wall of the receiving groove is fixed with a positioning boss corresponding to the receiving hole, one end of the thrust spring is inserted into the inner cavity of the receiving hole, and the other end is sleeved on the outside of the positioning boss.

[0013] Preferably, the inner cavity of the receiving chute is provided with two parallel guide frames, and the guide frames are fixedly connected to the annular platform. The guide frames are movably connected to the flow-stopping slider, and the guide frames of two adjacent receiving chute inner cavities are fixed to each other to form a "<" shaped structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features an annular platform fixedly installed at one end of the drill rod body. Multiple receiving grooves arranged in a circular array are formed on the end faces of both the annular platform and the drill rod body, with flow-stopping sliders slidably installed within the inner cavities of these grooves. The receiving grooves are along the radial direction of the annular platform, and a thrust spring is provided on the side of the flow-stopping slider. The thrust spring compresses the flow-stopping slider, causing multiple flow-stopping sliders to converge and form a circle, thus disconnecting the inner cavity of the annular platform from the fluid supply port. When the drill rod body rotates, the multiple flow-stopping sliders separate under centrifugal force, connecting the inner cavity of the annular platform to the fluid supply port, facilitating the supply of coolant to the drill bit. Furthermore, the gap between the multiple flow-stopping sliders is positively correlated with the rotational speed of the drill rod body. As the rotational speed of the drill rod body increases, the flow rate of coolant supplied by the fluid supply port can adaptively increase, thereby improving the cooling effect on the drill rod body and the drill bit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an exploded view of the annular platform and drill pipe body structure of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the annular truncated pyramid structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the flow-stopping slider structure of this utility model;

[0020] Figure 5This is a schematic diagram of the internal structure of the drill pipe body of this utility model.

[0021] In the diagram: 1. Drill rod body; 11. Liquid supply hole; 12. Receiving hole; 13. Anti-rotation slot; 2. Annular platform; 21. Anti-rotation insert; 22. Fastening screw; 3. Storage groove; 4. Flow stop slider; 41. Recessed groove; 42. Sealing gasket; 43. Storage hole; 44. Thrust spring; 45. Positioning boss; 5. Insertion boss; 51. Clearance groove; 52. Helical blade; 6. Guide frame. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1, please refer to Figures 1-5 This utility model provides a technical solution: a novel drill rod structure, which includes a drill rod body 1.

[0024] Specifically, a coolant supply hole 11 is provided inside the drill pipe body 1 to supply coolant to the drill bit. An annular platform 2 is fitted to one end of the drill pipe body 1. Multiple receiving grooves 3 arranged in a circular array are provided on the end faces of the annular platform 2 and the drill pipe body 1 that are close to each other. A flow-stopping slider 4 is slidably installed within the inner cavity of the receiving groove 3. The flow-stopping slider 4 can only slide along the inner cavity of the receiving groove 3. Since the receiving groove 3 is along the radial direction of the annular platform 2, the flow-stopping slider 4 can only move towards or away from the center of the annular platform 2 along its radial direction. As the center moves, a thrust spring 44 is provided on the side of the flow-stopping slider 4. Multiple thrust springs 44 push multiple flow-stopping sliders 4 to gather together to form a circular structure. When the device is stationary, the thrust provided by the thrust spring 44 allows the multiple flow-stopping sliders 4 to always remain close to each other. When the drill rod body 1 rotates, the flow-stopping sliders 4 are subjected to centrifugal force. When the centrifugal force on the flow-stopping sliders 4 is greater than the thrust of the thrust spring 44, the multiple flow-stopping sliders 4 can slide away from each other and thus separate from each other. The size of the gap between the multiple flow-stopping sliders 4 is positively correlated with the rotation speed of the drill rod body 1.

[0025] Furthermore, a receiving hole 12 is provided at the other end of the drill pipe body 1. A plug-in boss 5 is fixedly provided in the middle of the annular platform 2. The plug-in boss 5 has a hollow structure. The plug-in boss 5 is threaded into the inner cavity of the receiving hole 12, and the inner cavity of the plug-in boss 5 is connected to the liquid supply hole 11. Figure 1 and Figure 2 As shown, two adjacent drill rod bodies 1 are spliced ​​and fixed together by an annular platform 2 and a plug-in boss 5. The direction of tightening between the plug-in boss 5 and the receiving hole 12 is consistent with the rotation direction of the drill rod body 1. This can prevent loosening after multiple drill rod bodies 1 are spliced ​​together. As mentioned above, when the drill rod body 1 rotates, gaps are generated between multiple flow-stopping sliders 4, and coolant can flow normally inside the device until it flows out from the drill bit to cool the drill bit. As the rotation speed of the drill rod body 1 increases, the gaps between multiple flow-stopping sliders 4 increase, and the supply of coolant can increase accordingly, thereby improving the cooling effect on the drill bit.

[0026] In order to fix the annular platform 2 to the drill pipe body 1, this application also has an anti-rotation slot 13 provided on the side of the drill pipe body 1, and an anti-rotation plug 21 fixed on the surface of the annular platform 2. The anti-rotation plug 21 is movably inserted into the inner cavity of the anti-rotation slot 13 and is adapted to it. The annular platform 2 and the drill pipe body 1 are fixedly connected by a fastening screw 22. After the anti-rotation plug 21 is inserted into the liquid supply hole 11, it can prevent relative rotation between the annular platform 2 and the drill pipe body 1, thereby preventing the fastening screw 22 from being subjected to shear force and causing it to bend and deform.

[0027] To facilitate the delivery of coolant, this application also includes a relief groove 51 on the surface of the insertion boss 5 corresponding to the fastening screw 22, which prevents the normal installation and disassembly of the fastening screw 22 from being obstructed. Multiple spiral blades 52 arranged in a ring array are fixed on the inner wall of the insertion boss 5. When the drill rod body 1 rotates, the ring platform 2 and the insertion boss 5 rotate accordingly. At this time, the spiral blades 52 rotate and deliver coolant to the inner cavity of the insertion boss 5. As the rotation speed of the drill rod body 1 increases, the speed at which the spiral blades 52 deliver coolant increases and the coolant flow rate increases.

[0028] To prevent backflow of liquid within the borehole, this application also features a recessed groove 41 on the surface of the flow-stopping slider 4 near the drill rod body 1, and multiple recessed grooves 41 are joined together to form a circular groove, such as... Figure 4 and Figure 5As shown, when the drill rod body 1 of this device stops rotating, multiple flow-stopping sliders 4 gather together to form a circular structure. Since the lower surface of the flow-stopping slider 4 is flat, even if the hydraulic pressure inside the insertion boss 5 is large, the liquid cannot push the multiple flow-stopping sliders 4 away from each other, thereby preventing the liquid inside the borehole from flowing away. In addition, a sealing gasket 42 is provided between two adjacent recessed grooves 41 to improve the sealing performance of the joint between two adjacent flow-stopping sliders 4.

[0029] To prevent the volume of the thrust spring 44 from affecting the sliding stroke of the flow-stopping slider 4, this application also has a receiving hole 43 in the middle of the side of the flow-stopping slider 4. The inner wall of the receiving groove 3 is fixed with a positioning boss 45 corresponding to the receiving hole 43. One end of the thrust spring 44 is inserted into the inner cavity of the receiving hole 43, and the other end is sleeved on the outside of the positioning boss 45. The receiving hole 43 is provided to receive the thrust spring 44 and the positioning boss 45. When the flow-stopping slider 4 slides and is retracted into the inner cavity of the receiving groove 3, both the positioning boss 45 and the thrust spring 44 can be retracted into the inner cavity of the receiving hole 43 to avoid obstructing the sliding of the flow-stopping slider 4.

[0030] In order to guide the sliding of the flow-stopping slider 4, this application also has two parallel guide frames 6 in the inner cavity of the receiving groove 3, and the guide frames 6 are fixedly connected to the annular platform 2. The guide frames 6 are movably connected to the flow-stopping slider 4. The guide frames 6 in the inner cavities of two adjacent receiving grooves 3 are fixed to each other to form a "<" shaped structure. The guide frames 6 are mainly used to guide the sliding of the flow-stopping slider 4, ensuring that the flow-stopping slider 4 can be smoothly received into the inner cavity of the receiving groove 3 and preventing the flow-stopping slider 4 from tilting due to hydraulic pressure and thus failing to slide normally.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new drill pipe construction characterized by: The novel drill rod structure comprises: The drill rod body (1) is internally provided with a liquid supply hole (11), one end of the drill rod body (1) is provided with an annular table (2), the end faces of the annular table (2) and the drill rod body (1) are provided with a plurality of annularly arranged storage sliding grooves (3), the storage sliding grooves (3) are arranged along the radial direction of the annular table (2), the inner cavities of the storage sliding grooves (3) are slidably provided with flow-stopping sliding blocks (4) matched with the storage sliding grooves (3), the side faces of the flow-stopping sliding blocks (4) are provided with thrust springs (44), and the plurality of thrust springs (44) push the plurality of flow-stopping sliding blocks (4) to gather together to form a circular structure. The other end of the drill rod body (1) is provided with a receiving hole (12), the middle part of the annular table (2) is fixedly provided with a plug-in boss (5) in a hollow structure, the plug-in boss (5) is threadedly plugged into the inner cavity of the receiving hole (12), and the inner cavity of the plug-in boss (5) is communicated with the liquid supply hole (11).

2. A new drill pipe construction as claimed in claim 1, wherein: The side face of the drill rod body (1) is provided with an anti-rotation insertion groove (13), the surface of the annular table (2) is fixedly provided with an anti-rotation insertion block (21), the anti-rotation insertion block (21) is movably plugged into the inner cavity of the anti-rotation insertion groove (13) and is matched with the anti-rotation insertion groove (13), and the annular table (2) and the drill rod body (1) are fixedly and connectingly connected through a fastening screw (22).

3. A new drill pipe construction as claimed in claim 2, characterized in that: The surface of the plug-in boss (5) is provided with an avoiding groove (51) corresponding to the fastening screw (22), and the inner wall of the plug-in boss (5) is fixedly provided with a plurality of annularly arranged spiral blades (52).

4. A novel drill pipe construction as claimed in claim 3, wherein: The surface of the flow-stopping sliding block (4) close to the drill rod body (1) is provided with a recessed groove (41), and a plurality of recessed grooves (41) are spliced to form a circular recess after being close to each other, and a sealing gasket (42) is arranged between adjacent two recessed grooves (41).

5. A novel drill pipe construction as claimed in claim 4, wherein: The middle part of the side face of the flow-stopping sliding block (4) is provided with a receiving hole (43), the inner wall of the storage sliding groove (3) is fixedly provided with a positioning boss (45) corresponding to the receiving hole (43), one end of the thrust spring (44) is plugged into the inner cavity of the receiving hole (43), and the other end of the thrust spring (44) is sleeved outside the positioning boss (45).

6. A novel drill pipe construction as claimed in claim 5, wherein: The inner cavities of the storage sliding grooves (3) are provided with two parallel guide frames (6), the guide frames (6) are fixedly connected with the annular table (2), the guide frames (6) are movably and penetratively connected with the flow-stopping sliding blocks (4), and the guide frames (6) in the inner cavities of adjacent two storage sliding grooves (3) are fixedly connected to form a "<" shaped structure.

Images