A drill pipe joint for drilling ultra-deep wells

Abstract

The utility model discloses a drill rod connector for super deep well drilling belongs to drill rod technical field, including the drill pipe, the top of drill pipe is provided with the female joint, the bottom of drill pipe is provided with the male joint, the top of female joint is provided with the taper thread hole, in the utility model, the preliminary connection between two drill pipes is carried out to the cooperation of the taper thread hole of female joint top and the taper thread pipe below male joint, and the transmission sleeve is slid to the outside of female joint and male joint, make the transmission block of transmission sleeve inside slide to transmission sleeve and lower transmission groove, one side makes the drill pipe of top drive the drill pipe of below rotate through the thread cooperation of taper thread hole and taper thread pipe, on the other hand makes the drill pipe of top drive the drill pipe of below rotate through the cooperation of male joint, upper transmission groove, transmission block, lower transmission groove and female joint, guarantees the transmission effect after the connection of two drill pipes.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, and more specifically, to a drill pipe connector for ultra-deep well drilling. Background Technology

[0002] Drill pipe is a steel pipe with threads at the tail, 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 to raise, lower, or rotate the bottom hole assembly together with the drill bit.

[0003] Drill pipes must be able to withstand enormous internal and external pressures, torsion, bending, and vibration. During oil and gas extraction and refining, drill pipes can be reused multiple times. Drill pipe connectors are components of drill pipes, consisting of male and female connectors, connected to both ends of the drill pipe body. In ultra-deep well drilling, multiple drill pipes are connected via male and female connectors. However, existing drill pipe connections rely solely on the threads on the male and female connectors for connection, and the threads also transmit the torque of the drill pipe rotation. In ultra-deep well drilling, multiple drill pipes are used, and relying solely on threads for transmission is inefficient. Therefore, we propose a new drill pipe connector for ultra-deep well drilling. Utility Model Content

[0004] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a drill pipe connector for ultra-deep well drilling.

[0005] To solve the above problems, the present invention adopts the following technical solution: a drill pipe connector for ultra-deep well drilling, comprising a drill pipe, a female connector at the top of the drill pipe, a male connector at the bottom of the drill pipe, a tapered threaded hole at the top of the female connector, a tapered threaded tube at the bottom of the male connector, multiple lower transmission grooves on the outer side of the female connector, multiple upper transmission grooves on the outer side of the male connector, the lower transmission grooves and upper transmission grooves being aligned, a transmission sleeve sleeved on the outer side of the male connector, two adsorption mechanisms on the inner wall of the transmission sleeve, multiple transmission blocks on the inner wall of the transmission sleeve, the ends of the multiple transmission blocks extending into the inner cavity of the upper transmission groove, and a lower guide inclined seat at the bottom of the female connector.

[0006] As a preferred embodiment of the present invention, the adsorption mechanism includes a mounting groove formed on the inner wall of the transmission sleeve, and a strong magnet is fixedly sleeved in the inner cavity of the mounting groove.

[0007] As a preferred embodiment of this utility model, the top end of the male connector is provided with a connector guide angle, and the top end of the transmission sleeve is provided with a sleeve guide angle, wherein the angles of the connector guide angle and the sleeve guide angle are the same.

[0008] In a preferred embodiment of this utility model, the outer diameter of the transmission sleeve is equal to the outer diameter of the top end of the lower guide inclined seat.

[0009] In a preferred embodiment of this utility model, the inner diameter of the transmission sleeve is equal to the outer diameter of the male connector and the female connector, respectively.

[0010] In a preferred embodiment of this utility model, the width of the transmission block is equal to the width of the inner cavity of the lower transmission groove and the upper transmission groove, respectively.

[0011] The advantages of this utility model are: (1) In this utility model, the two drill pipes are initially connected by the tapered threaded hole above the female connector and the tapered threaded tube below the male connector. In addition, by sliding the transmission sleeve to the outside of the female connector and the male connector, the transmission block inside the transmission sleeve slides into the transmission sleeve and the lower transmission groove. On the one hand, the upper drill pipe drives the lower drill pipe to rotate by the threaded connection of the tapered threaded hole and the tapered threaded tube. On the other hand, the upper drill pipe drives the lower drill pipe to rotate by the cooperation of the male connector, the upper transmission groove, the transmission block, the lower transmission groove and the female connector, thus ensuring the transmission effect after the two drill pipes are connected.

[0012] (2) In this utility model, by setting a strong magnet on the inner side of the transmission sleeve, when the tapered threaded tube and the tapered threaded hole are connected, the magnetic attraction between the strong magnet and the male connector is used to fix the transmission sleeve on the outside of the male connector, so that the transmission sleeve will not obstruct the connection between the female connector and the male connector. After the female connector and the male connector are connected, the transmission sleeve is moved down, so that the transmission block on the inner side of the transmission sleeve slides to the transmission sleeve and the lower transmission groove. At this time, the magnetic attraction between the strong magnet and the female connector is used to fix the transmission sleeve and the female connector. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 is an exploded view of the overall structure of this utility model.

[0015] Figure 3 is a schematic diagram of the structure of the drill pipe of this utility model.

[0016] Figure 4 is a schematic diagram of the transmission sleeve of this utility model.

[0017] The following are the labels in the diagram: 1. Drill pipe; 2. Female connector; 3. Male connector; 4. Tapered threaded hole; 5. Tapered threaded pipe; 6. Transmission sleeve; 7. Lower transmission groove; 8. Upper transmission groove; 9. Transmission block; 10. Adsorption mechanism; 11. Mounting groove; 12. Strong magnet; 13. Lower guide angle seat; 14. Connector guide angle; 15. Sleeve guide angle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0021] As shown in Figures 1 to 4, a drill pipe connector for ultra-deep well drilling includes a drill pipe 1, which is hollow. A female connector 2 is located at the top of the drill pipe 1, and a male connector 3 is located at the bottom. A tapered threaded hole 4 is located at the top of the female connector 2, and a tapered threaded tube 5 is located at the bottom of the male connector 3. The pitch, lead, and thread profile of the tapered threaded hole 4 and the tapered threaded tube 5 are matched. When the tapered threaded tube 5 at the bottom of the male connector 3 is threaded into the tapered threaded hole 4 at the top of the female connector 2, so that the bottom surface of the male connector 3 and the top surface of the female connector 2 are in contact, the upper transmission groove 8 on the side of the male connector 3 aligns with the lower transmission groove 7 on the side of the female connector 2. This requirement is controlled by calculation during manufacturing. Multiple lower transmission grooves 7 are located on the outer side of the female connector 2, and multiple upper transmission grooves 8 and lower transmission grooves 7 are located on the outer side of the male connector 3. Aligned with the upper transmission groove 8, the male connector 3 is fitted with a transmission sleeve 6 on its outer side. The inner wall of the transmission sleeve 6 is provided with two adsorption mechanisms 10 and multiple transmission blocks 9. The ends of the multiple transmission blocks 9 extend into the inner cavity of the upper transmission groove 8. The bottom end of the female connector 2 is provided with a lower guide inclined seat 13. The top end of the male connector 3 is provided with a connector guide angle 14 and the top end of the transmission sleeve 6 is provided with a sleeve guide angle 15. The angles of the connector guide angle 14 and the sleeve guide angle 15 are the same. Example 2

[0022] Based on Embodiment 1, as shown in Figure 4, the adsorption mechanism 10 includes a mounting groove 11 formed in the inner wall of the transmission sleeve 6. A strong magnet 12 is fixedly sleeved in the inner cavity of the mounting groove 11. The inner surface of the strong magnet 12 is arc-shaped, and the inner surface of the strong magnet 12 is in contact with the inner wall of the female connector 2 or the male connector 3. The transmission sleeve 6 is fixed by the magnetic attraction between the strong magnet 12 and the female connector 2, or between the strong magnet 12 and the male connector 3. Both the female connector 2 and the male connector 3 are made of materials that can be attracted by the strong magnet 12. Example 3

[0023] Based on Embodiment 1 and Embodiment 2, as shown in Figures 2 to 4, the outer diameter of the transmission sleeve 6 is equal to the outer diameter of the top of the lower guide inclined seat 13, ensuring the smoothness of the transmission sleeve 6 after it is fitted onto the outside of the female connector 2. The inner diameter of the transmission sleeve 6 is equal to the outer diameter of the male connector 3 and the female connector 2, respectively, ensuring the stability of the transmission sleeve 6 fitted onto the outside of the female connector 2 and the male connector 3. The width of the transmission block 9 is equal to the width of the inner cavity of the lower transmission groove 7 and the upper transmission groove 8, respectively, ensuring the stability of the transmission block 9 when it is engaged in the lower transmission groove 7 and the upper transmission groove 8.

[0024] It should be noted that this utility model is a drill pipe connector for ultra-deep well drilling. In use, firstly, the tapered threaded pipe 5 below one drill pipe 1 is placed on the tapered threaded hole 4 on the lower drill pipe 1. The two drill pipes 1 are initially connected through the threaded engagement between the tapered threaded hole 4 and the tapered threaded pipe 5. The drill pipe 1 to be installed is hoisted by the drilling rig's surface equipment. Then, when the bottom surface of the lower male connector 3 of the upper drill pipe 1 is in contact with the top surface of the top female connector 2 of the lower drill pipe 1, the upper transmission groove 8 on the side of the female connector 2 aligns with the lower transmission groove 7 on the side of the male connector 3. The transmission sleeve 6 on the outside of the male connector 3 is then moved, causing the bottom end of the transmission sleeve 6 to move down to contact the top surface of the lower guide slant seat 13.

[0025] At this time, the transmission block 9 inside the transmission sleeve 6 is located inside the lower transmission groove 7 and the upper transmission groove 8 respectively. At the same time, the connector guide angle 14 at the top of the male connector 3 and the sleeve guide angle 15 at the top of the transmission sleeve 6 are aligned. In addition, the transmission sleeve 6 is fixed by the magnetic attraction between the strong magnet 12 and the female connector 2. Finally, when the surface equipment drives the drill pipe 1 to rotate, on the one hand, the two drill pipes 1 are driven by the threaded engagement between the tapered threaded hole 4 and the tapered threaded pipe 5. On the other hand, the female connector 2 and the male connector 3 on the two drill pipes 1 are driven by the engagement of the lower transmission groove 7, the upper transmission groove 8, the transmission block 9 and the transmission sleeve 6, thus causing multiple drill rods to rotate.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A drill pipe connector for ultra-deep well drilling, comprising drill pipe (1), characterized in that: The top of the drill pipe (1) is provided with a female connector (2), the bottom of the drill pipe (1) is provided with a male connector (3), the top of the female connector (2) is provided with a tapered threaded hole (4), the bottom of the male connector (3) is provided with a tapered threaded tube (5), the outside of the female connector (2) is provided with multiple lower transmission grooves (7), the outside of the male connector (3) is provided with multiple upper transmission grooves (8), the lower transmission grooves (7) and the upper transmission grooves (8) are aligned, the outside of the male connector (3) is provided with a transmission sleeve (6), the inner wall of the transmission sleeve (6) is provided with two adsorption mechanisms (10), the inner wall of the transmission sleeve (6) is provided with multiple transmission blocks (9), the ends of the multiple transmission blocks (9) extend to the inner cavity of the upper transmission groove (8), and the bottom of the female connector (2) is provided with a lower guide inclined seat (13).

2. The drill pipe connector for ultra-deep well drilling according to claim 1, characterized in that: The adsorption mechanism (10) includes an installation groove (11) formed on the inner wall of the transmission sleeve (6), and a strong magnet (12) is fixedly sleeved in the inner cavity of the installation groove (11).

3. A drill pipe connector for ultra-deep well drilling according to claim 1, characterized in that: The male connector (3) is provided with a connector guide angle (14) at its top end, and the transmission sleeve (6) is provided with a sleeve guide angle (15) at its top end. The connector guide angle (14) and the sleeve guide angle (15) are the same angle.

4. A drill pipe connector for ultra-deep well drilling according to claim 1, characterized in that: The outer diameter of the transmission sleeve (6) is equal to the outer diameter of the top of the lower guide slant seat (13).

5. A drill pipe connector for ultra-deep well drilling according to claim 1, characterized in that: The inner diameter of the transmission sleeve (6) is equal to the outer diameter of the male connector (3) and the female connector (2).

6. A drill pipe connector for ultra-deep well drilling according to claim 1, characterized in that: The width of the transmission block (9) is equal to the width of the inner cavity of the lower transmission groove (7) and the upper transmission groove (8).

Images