Anti-blocking nipple for oil pipe drill rod

Abstract

The utility model relates to the field of oil pipe drill rod short sections and discloses an oil pipe drill rod anti-blocking short section which comprises a connecting pipe and a plurality of shielding strips, a threaded pipe is fixedly installed at the top of the connecting pipe, and the center of the threaded pipe and the center of the connecting pipe are located on the same straight line. The multiple shielding strips are distributed in a circumferential array mode with the center of the connecting pipe as the axis, sealing cloth is fixedly connected to the inner walls of the shielding strips, a connecting frame is clamped to the surfaces of the shielding strips, a rotating cylinder is fixedly installed at one end of the connecting frame, and the surfaces of the shielding strips and the sealing cloth are fixedly connected with the inner wall of the connecting pipe. The multiple shielding strips and the sealing cloth are installed on the inner wall of the connecting pipe, the surfaces of the shielding strips are connected with the connecting frame in a clamped mode, and the rotating cylinder is installed at one end of the connecting frame so that the rotating cylinder can control the connecting frame to push the shielding strips and open the sealing cloth on the inner walls of the shielding strips, and therefore blocked mud can be dredged conveniently.

Description

Technical Field

[0001] The present application relates to the field of oil pipe drill pipe short sections, and in particular to an anti-blocking short section for oil pipe drill pipe. Background Art

[0002] Drill pipe is a steel pipe with a threaded tail end, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the well. The purpose of the drill pipe is to transport drilling mud to the drill bit and raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, the drill pipe can be used many times. The drill pipe is divided into three categories: square drill pipe, drill pipe and weighted drill pipe. The drill pipe is composed of multiple groups of short sections. The short section in the drilling rig is part of the drill pipe assembly, which is used to connect the drill pipe and the drill bit, support and withstand the torque and gravity of the drill pipe, and ensure the stability and efficiency of drilling. When installing a conventional short section, one end of the connecting pipe is connected to the top of the drill bit. A threaded pipe is installed on the top of the connecting pipe, and the connecting pipe is connected to another connecting pipe with the help of the threaded pipe.

[0003] With regard to the above-mentioned related technologies, the inventors believe that when conventional tubing drill pipe short sections are used, since the short sections are mostly connected to the entire pipe body, when the short sections transmit mud, some mud is not mixed enough and is prone to sticking to the inner wall of the short sections. Moreover, since the size of the inner wall of the short section is difficult to adjust, the inner wall of the short section is easily clogged after a long period of accumulation, requiring staff to take out the short section and clean it, which affects the processing efficiency of the tubing drill pipe.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the problem that the inner wall of a short joint is blocked and it is difficult to adjust and control the mud dredging, the present application provides an anti-blocking short joint for oil pipe and drill pipe.

[0006] The present application provides an anti-blocking short sub for oil pipe drill pipe, which adopts the following technical solution:

[0007] A short section for preventing blockage of an oil pipe and drill pipe comprises a connecting pipe and several shielding strips, a threaded pipe is fixedly installed on the top of the connecting pipe, the center of the threaded pipe and the center of the connecting pipe are on the same straight line, and several shielding strips are distributed in a circular array with the center of the connecting pipe as the axis, the inner wall of the shielding strip is fixedly connected to a sealing cloth, and the surface of the shielding strip is clamped with a connecting frame, a rotating cylinder is fixedly installed at one end of the connecting frame, the surfaces of the shielding strip and the sealing cloth are both fixedly connected to the inner wall of the connecting pipe, and the shielding strip is composed of a combination of several rotating blocks that are rotatably connected to each other, and the size specification of the inner wall of the connecting frame is compatible with the size specification of the surface of the shielding strip.

[0008] Preferably, a threaded rod is threadedly installed on the inner wall of the rotating cylinder, one end of the threaded rod is fixedly connected to a connecting gear, and the center of the connecting gear is on the same straight line as the center of the threaded rod.

[0009] Preferably, the sealing cloth is a rubber cloth, and the surface dimensions of the sealing cloth are adapted to the dimensions of the gaps between the plurality of shielding strips.

[0010] Preferably, a plurality of the connecting gears are meshed with rotating gears on their surfaces, a rotating rod is fixedly mounted on the top of the rotating gear, and the center of the rotating rod is in the same straight line as the center of the connecting pipe.

[0011] Preferably, the inner wall of the connecting pipe is fixedly connected to a plurality of fixing brackets, the bottom end of the fixing bracket is fixedly installed with a connecting ring, the inner wall of the connecting ring is rotatably connected to a bearing, and the inner wall of the bearing is fixedly installed to the surface of the threaded rod.

[0012] Preferably, a sliding frame is slidably connected to the inner wall of the connecting pipe, a motor is fixedly installed on the top of the sliding frame, and the output end of the motor is fixedly connected to the top of the rotating rod.

[0013] Preferably, a plurality of rollers are rotatably mounted on the inner wall of the sliding frame, the plurality of rollers are distributed in a circular array with the center of the sliding frame as the axis, and the surfaces of the rollers are slidably connected to the inner wall of the connecting pipe.

[0014] In summary, this application has the following beneficial technical effects:

[0015] The cam is pressed against the locking cam, and the locking cam is pressed against the locking cam, so that the locking cam is locked and the locking cam is released, thereby clearing the blocked cam and preventing the blockage from being blocked by the cam.

[0016] The top of the gear train is fixed with a gear, and the top of the gear train is fixed with a gear. The gear train is connected with the gear of the gear train by the gear rotation and the gear rotation of the gear train, so that the gear train can be connected with the gear train simultaneously. It is convenient to support the shielding bar synchronously. The inner wall of the connecting tube is provided with a fixing frame, and the bottom end of the fixing frame is provided with a connecting ring. The inner wall of the connecting ring is rotatably connected with the surface of the threaded rod by means of a bearing, so that the threaded rod is fixed to the inner wall of the connecting tube and the threaded rod is convenient to rotate. The inner wall of the connecting tube is slidably provided with a sliding frame, and the top of the sliding frame is provided with a motor, and the output end of the motor is fixedly connected to the top of the rotating rod, so that after the motor is started, the rotating rod is controlled to rotate, driving the rotating gear to rotate the connecting gear, effectively reducing the amount of manual operation. The inner wall of the sliding frame is rotatably connected with a roller, and the surface of the roller is slidably connected to the inner wall of the connecting tube, so that the sliding frame can move on the inner wall of the connecting tube with the help of the roller. It is more convenient to put the sliding frame into the connecting tube, and prevent the sliding frame from rotating on the inner wall of the connecting tube, affecting the use effect of the motor; effectively improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an anti-blocking short section for oil pipe drill pipe according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the shielding strip structure of an embodiment of the application;

[0019] Figure 3 is a side structural schematic diagram of an embodiment of the application;

[0020] Figure 4 It is a structural diagram of location A of the application embodiment.

[0021] Explanation of the accompanying drawings: 1. Connecting pipe; 2. Threaded pipe; 3. Shielding strip; 4. Sealing cloth; 5. Connecting frame; 6. Rotating cylinder; 7. Threaded rod; 8. Connecting gear; 9. Rotating gear; 10. Rotating rod; 11. Fixed frame; 12. Connecting ring; 13. Bearing; 14. Sliding frame; 15. Motor; 16. Roller. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 —4 Provide further details of this application.

[0023] The present application discloses an anti-blocking short joint for oil pipe drill pipe, referring to Figure 1 - Figure 2 , including a connecting pipe 1. During installation, one end of the connecting pipe 1 is connected to the top of the drill bit. A threaded pipe 2 is installed on the top of the connecting pipe 1. The connecting pipe 1 is connected to another connecting pipe 1 with the help of the threaded pipe 2. Several shielding strips 3 and sealing cloth 4 are installed on the inner wall of the connecting pipe 1. A connecting frame 5 is clamped on the surface of the shielding strip 3. A rotating cylinder 6 is installed at one end of the connecting frame 5. The connecting frame 5 is controlled by the rotating cylinder 6 to push the shielding strip 3 and open the sealing cloth 4 on the inner wall of the shielding strip 3, thereby facilitating the unblocking of blocked mud, effectively improving the anti-blocking effect of the drill pipe short section, and avoiding the situation where the short section is blocked by mud and the staff needs to disassemble and clean the short section.

[0024] Reference Figure 2 The inner wall of the rotating cylinder 6 is threadedly connected with a threaded rod 7, and one end of the threaded rod 7 is fixedly installed with a connecting gear 8. The threaded rod 7 is driven to rotate by means of the connecting gear 8, and the rotating cylinder 6 at one end of the threaded rod 7 is controlled to move, which is convenient for adjusting and limiting the rotating cylinder 6, and fixing the shielding strip 3 to a suitable angle, which is more convenient when used. The surface of the sealing cloth 4 is connected to the inner wall of the shielding strip 3, and the sealing cloth 4 is a rubber cloth. With the help of the relatively soft rubber material of the sealing cloth 4, the sealing cloth 4 is kept in contact with the inner wall of the shielding strip 3, and the surface of the connecting pipe 1 is shielded.

[0025] Reference Figure 2 - Figure 4, a rotating gear 9 is meshed on the surface of several connecting gears 8, and a rotating rod 10 is installed on the top of the rotating gear 9. The rotating rod 10 is controlled to rotate to drive the rotating gear 9 to rotate, thereby controlling several connecting gears 8 at the same time, making it convenient to synchronously support the shielding bar 3, which is more convenient when in use. A fixing frame 11 is installed on the inner wall of the connecting tube 1, and a connecting ring 12 is installed on the bottom end of the fixing frame 11. The inner wall of the connecting ring 12 is rotatably connected to the surface of the threaded rod 7 by means of a bearing 13, fixing the threaded rod 7 to the inner wall of the connecting tube 1, and facilitating the rotation of the threaded rod 7. The inner wall of the connecting tube 1 is slidably installed with a sliding frame 1 4. A motor 15 is installed on the top of the sliding frame 14. The output end of the motor 15 is fixedly connected to the top of the rotating rod 10. After the motor 15 is started, the rotating rod 10 is controlled to rotate, driving the rotating gear 9 to rotate the connecting gear 8, effectively reducing the amount of manual operation. The inner wall of the sliding frame 14 is rotatably connected to a roller 16. The surface of the roller 16 is slidably connected to the inner wall of the connecting tube 1. With the help of the roller 16, the sliding frame 14 is convenient to move on the inner wall of the connecting tube 1, which is more convenient to place the sliding frame 14 into the connecting tube 1, and prevents the sliding frame 14 from rotating on the inner wall of the connecting tube 1, which affects the use effect of the motor 15.

[0026] The implementation principle of the anti-blocking short section of the oil pipe drill pipe in the embodiment of the present application is as follows: by installing several shielding strips 3 and sealing cloth 4 on the inner wall of the connecting pipe 1, the surface of the shielding strip 3 is clamped with a connecting frame 5, and one end of the connecting frame 5 is installed with a rotating cylinder 6, so that the connecting frame 5 can be controlled by the rotating cylinder 6 to push the shielding strip 3 and open the sealing cloth 4 on the inner wall of the shielding strip 3, thereby facilitating the unblocking of the blocked mud and avoiding the situation where the short section is blocked by mud and the staff needs to disassemble and clean the short section. The inner wall of the rotating cylinder 6 is threadedly connected with a threaded Rod 7, one end of the threaded rod 7 is fixedly installed with a connecting gear 8, so that the threaded rod 7 can be driven to rotate with the help of the connecting gear 8, and the rotating cylinder 6 at one end of the threaded rod 7 can be controlled to move, so as to facilitate the adjustment and limitation of the rotating cylinder 6, and fix the shielding strip 3 to a suitable angle, which is more convenient when used. The surface of the sealing cloth 4 is connected to the inner wall of the shielding strip 3, and the sealing cloth 4 is a rubber cloth, so that the sealing cloth 4 can be kept in contact with the inner wall of the shielding strip 3 with the help of the relatively soft rubber material of the sealing cloth 4, and the surface of the connecting pipe 1 is shielded.

[0027] A rotating gear 9 can also be engaged on the surface of several connecting gears 8, and a rotating rod 10 is installed on the top of the rotating gear 9 to facilitate the control of the rotating rod 10 to rotate and drive the rotating gear 9 to rotate, thereby simultaneously controlling several connecting gears 8, making it convenient to synchronously support the shielding bar 3, which is more convenient when in use. A fixing frame 11 is installed on the inner wall of the connecting tube 1, and a connecting ring 12 is installed on the bottom end of the fixing frame 11. The inner wall of the connecting ring 12 is rotatably connected to the surface of the threaded rod 7 by means of a bearing 13, so as to fix the threaded rod 7 to the inner wall of the connecting tube 1 and facilitate the rotation of the threaded rod 7. The inner wall of the connecting tube 1 is slidably installed with a sliding frame 14. A motor 15 is installed on the top of the sliding frame 14. The output end of the motor 15 is fixedly connected to the top of the rotating rod 10, so that after the motor 15 is started, the rotating rod 10 is controlled to rotate, and the rotating gear 9 drives the connecting gear 8 to rotate, effectively reducing the amount of manual operation. The inner wall of the sliding frame 14 is rotatably connected to a roller 16. The surface of the roller 16 is slidably connected to the inner wall of the connecting tube 1, so that the sliding frame 14 can move on the inner wall of the connecting tube 1 with the help of the roller 16. It is more convenient to put the sliding frame 14 into the connecting tube 1, and it prevents the sliding frame 14 from rotating on the inner wall of the connecting tube 1, which affects the use effect of the motor 15.

[0028] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An oil pipe drill pipe anti-blocking short joint, comprising a connecting pipe (1) and a plurality of shielding strips (3), characterized in that: A threaded tube (2) is fixedly mounted on the top of the connecting tube (1), the center of the threaded tube (2) and the center of the connecting tube (1) are on the same straight line, a plurality of shielding strips (3) are distributed in a circular array with the center of the connecting tube (1) as the axis, a sealing cloth (4) is fixedly connected to the inner wall of the shielding strip (3), and a connecting frame (5) is clamped on the surface of the shielding strip (3), and a rotating cylinder (6) is fixedly mounted on one end of the connecting frame (5).

2. The anti-blocking sub for oil pipe and drill pipe according to claim 1, characterized in that: The surfaces of the shielding strip (3) and the sealing cloth (4) are fixedly connected to the inner wall of the connecting tube (1), and the shielding strip (3) is composed of a plurality of rotating blocks that are rotatably connected to each other. The size specifications of the inner wall of the connecting frame (5) are compatible with the size specifications of the surface of the shielding strip (3).

3. The anti-blocking sub for oil pipe and drill pipe according to claim 1, characterized in that: A threaded rod (7) is threadedly mounted on the inner wall of the rotating cylinder (6), one end of the threaded rod (7) is fixedly connected to a connecting gear (8), and the center of the connecting gear (8) is on the same straight line as the center of the threaded rod (7).

4. The anti-blocking sub for oil pipe and drill pipe according to claim 1, characterized in that: The sealing cloth (4) is a rubber cloth, and the surface dimensions of the sealing cloth (4) are compatible with the dimensions of the gaps between the plurality of shielding strips (3).

5. The anti-blocking sub for oil pipe and drill pipe according to claim 3, characterized in that: The surfaces of several connecting gears (8) are meshed with rotating gears (9), and a rotating rod (10) is fixedly mounted on the top of the rotating gear (9), and the center of the rotating rod (10) is on the same straight line as the center of the connecting pipe (1).

6. The anti-blocking sub for oil pipe and drill pipe according to claim 1, characterized in that: The inner wall of the connecting pipe (1) is fixedly connected to a plurality of fixing frames (11), the bottom end of the fixing frame (11) is fixedly mounted with a connecting ring (12), the inner wall of the connecting ring (12) is rotatably connected to a bearing (13), and the inner wall of the bearing (13) is fixedly mounted to the surface of the threaded rod (7).

7. The anti-blocking sub for oil pipe and drill pipe according to claim 1, characterized in that: The inner wall of the connecting tube (1) is slidably connected to a sliding frame (14), a motor (15) is fixedly mounted on the top of the sliding frame (14), and an output end of the motor (15) is fixedly connected to the top of the rotating rod (10).

8. The anti-blocking sub for oil pipe and drill pipe according to claim 7, characterized in that: A plurality of rollers (16) are rotatably mounted on the inner wall of the sliding frame (14), and the plurality of rollers (16) are distributed in a circular array with the center of the sliding frame (14) as the axis, and the surfaces of the rollers (16) are slidably connected to the inner wall of the connecting pipe (1).

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