Multifunctional ball-throwing and plug-throwing rotary circulating device

Abstract

The utility model relates to a multifunctional ball and plug throwing rotary circulating device which comprises a multifunctional shaft, a single-hole plug blocking valve and a check ring. A shaft channel is formed in the inner wall of the multifunctional shaft in a penetrating mode from top to bottom, a mounting groove is formed in the multifunctional shaft, and a single-hole plug blocking valve is arranged in the mounting groove. A check ring is arranged in the shaft channel; an upper bearing is arranged on the multifunctional shaft outer ring and located on the lower portion of the single-hole blocking plug through an upper bearing seat, and a lower bearing is arranged on the multifunctional shaft outer ring through a lower bearing seat. The multifunctional ball and plug throwing rotary circulating device is connected between a top drive and the upper portion of a drilling tool, a ball or a rubber plug can be thrown into a pipe column only by rotating the hand wheel by 90 degrees during ball throwing, the top drive does not need to be detached for ball throwing or plug throwing, operation continuity is achieved, and well drilling timeliness and safety are improved. And due to the arrangement of the upper bearing and the lower bearing, the ball-throwing and plug-throwing rotary circulating device has the ball-throwing and plug-throwing function and the rotary circulating head function, and the adaptability of the ball-throwing and plug-throwing rotary circulating device is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary technology for drilling and coring tools, and in particular to a multifunctional ball-throwing and plug-throwing rotary circulation device. Background Technology

[0002] Currently, in actual operations, the method of dropping balls or rubber plugs into the drill string is generally to remove the top drive. However, this traditional method of dropping balls and plugs results in discontinuous operations, which is not only time-consuming and labor-intensive, but also carries the risk of mud spraying out from inside the drill string during the removal of the top drive, polluting the environment and posing risks to operations, wellhead, and stuck drill. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a multifunctional ball-throwing and plug-throwing rotating circulation device.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a multi-functional ball throwing and plug throwing rotary circulation device, including a multi-functional shaft, a single-hole plug valve and a stop ring;

[0005] The multi-functional shaft has a shaft channel extending from top to bottom through its inner wall, and a mounting groove is provided on the multi-functional shaft. A single-hole stop valve is provided in the mounting groove.

[0006] The single-hole plug valve includes a valve body and a handwheel. One end of the valve body extends out of the multi-functional shaft, and the handwheel is set on the end of the valve body extending out of the multi-functional shaft. The valve body is provided with a valve channel. The valve body rotates in the mounting groove under the drive of the handwheel to realize the connection between the valve channel and the shaft channel or the disconnection between the valve channel and the shaft channel.

[0007] A stop ring is provided in the shaft channel, and the stop ring is located above the single-hole stop valve; the outer ring of the multi-functional shaft is provided with an upper bearing through an upper bearing seat and a lower bearing through a lower bearing seat at the lower part of the single-hole stop valve;

[0008] The multifunctional shaft is equipped with an injection head, which is located between the upper bearing and the lower bearing; the injection head is equipped with an injection channel, which is connected to the shaft channel.

[0009] In a preferred embodiment of this utility model, an end cap is provided on the outside of the mounting groove and on the wall of the multifunctional shaft. The end cap is connected to the multifunctional shaft by screws. A stopper cap is provided between the end cap and the valve body. Both the stopper cap and the end cap are fitted onto the valve body. The stopper cap and the valve body are sealed by a sealing ring. The valve body and the mounting groove are also sealed by a sealing ring.

[0010] In a preferred embodiment of this utility model, a limiting block is provided between the handwheel and the end cover. The limiting block is sleeved on the valve body, and a limiting groove is provided on the outer edge of the limiting block, which cooperates with the limiting screw provided on the end cover to restrict the handwheel to rotate only 90 degrees in both directions. A safety screw is detachably provided between the handwheel and the end cover.

[0011] In a preferred embodiment of this utility model, anti-loosening screws are provided between the injection head and the upper bearing seat and the lower bearing seat respectively; a combined seal and a support ring are provided between the injection head and the outer wall of the multifunctional shaft.

[0012] In a preferred embodiment of the present invention, there are two injection channels, and each injection channel is provided with a union seal at the end away from the shaft channel. One of the injection channels is provided with a lifting lug and a wing nut at the end away from the shaft channel.

[0013] In a preferred embodiment of this utility model, a bearing cover is provided at the lower part of the upper and lower bearings on the outer wall of the multifunctional shaft.

[0014] The beneficial effects of this utility model are as follows: By connecting the multifunctional ball-and-plug rotary circulation device of this application between the top drive and the upper part of the drill string, the ball or plug can be inserted into the tubing simply by rotating the handwheel 90 degrees during ball insertion, eliminating the need to unload the top drive for ball or plug insertion. This achieves continuous operation and improves drilling efficiency and safety. It also overcomes the disadvantages of traditional ball-insertion methods, such as being time-consuming and labor-intensive, and the environmental pollution caused by mud ejection from the drill string during top drive unloading. The device is not only simple and reliable in structure and flexible in operation, but also greatly saves manpower and drilling time, while avoiding operational risks, wellhead risks, and stuck pipe risks. Furthermore, the upper and lower bearings allow the ball-and-plug rotary circulation device to function as both a ball-and-plug device and a rotating circulation head, improving its adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the valve channel and shaft channel of this utility model being disconnected;

[0016] Figure 2 yes Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of a single-hole stop valve.

[0018] Figure 4 This is a schematic diagram of the connection structure between the valve channel and the shaft channel of this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting block structure of this utility model;

[0020] In the diagram: 1. Multifunctional shaft; 101. Shaft channel; 2. Single-hole stop valve; 201. Valve body; 2011. Valve channel; 202. Handwheel; 3. Stop ring; 4. Upper bearing seat; 5. Upper bearing; 6. Lower bearing seat; 7. Lower bearing; 8. End cap; 801. Limit screw; 9. Stop cap; 10. Sealing ring; 11. Limit block; 12. Limit groove; 13. Safety screw; 14. Injection head; 1401. Injection channel; 15. Anti-loosening screw; 16. Combination seal; 17. Support ring; 18. Union seal; 19. Lifting lug; 20. Wing nut; 21. Bearing cover. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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. They 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 or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] like Figures 1 to 5 The multifunctional ball-throwing and plug-throwing rotary circulation device shown includes a multifunctional shaft 1, a single-hole plug valve 2, and a stop ring 3;

[0024] The inner wall of the multi-functional shaft 1 is provided with a shaft channel 101 extending from top to bottom. The multi-functional shaft 1 is provided with a mounting groove, and a single-hole stop valve 2 is provided in the mounting groove.

[0025] The single-hole stop valve 2 includes a valve body 201 and a handwheel 202. One end of the valve body 201 extends out of the multi-functional shaft 1, and the handwheel 202 is disposed on the end of the valve body 201 extending out of the multi-functional shaft 1. Specifically, the handwheel 202 is connected to the valve body 201 by screws. The valve body 201 is provided with a valve channel 2011. The valve body 201 rotates in the mounting groove under the drive of the handwheel 202 to realize the connection between the valve channel 2011 and the shaft channel 101 or the disconnection between the valve channel 2011 and the shaft channel 101. An end cap 8 is provided on the outside of the mounting groove and on the wall of the multi-functional shaft 1. The end cap 8 is connected to the multi-functional shaft 1 by screws. A stop cap 9 is provided between the end cap 8 and the valve body 201, and both the stop cap 9 and the end cap 8 are fitted on the valve body 201. The stop cap 9 and the valve body 201 are sealed by a sealing ring 10, and the valve body 201 and the mounting groove are also sealed by a sealing ring 10.

[0026] A limiting block 11 is provided between the handwheel 202 and the end cover 8. The limiting block 11 is sleeved on the valve body 201, and a limiting groove 12 is provided on the outer edge of the limiting block 11, which cooperates with the limiting screw 801 provided on the end cover 8 to restrict the handwheel 202 to rotate only 90 degrees in both directions. A safety screw 13 is detachably provided between the handwheel 202 and the end cover 8. By adjusting the safety screw 13, the rotation between the handwheel and the end cover is further restricted. Specifically, when the safety screw 13 is screwed outward, the front end of the safety screw 13 disengages from the inside of the end cover 8, and the handwheel 202 can rotate. Conversely, the handwheel 202 and the end cover 8 cannot rotate under the restriction of the safety screw 13.

[0027] A stop ring 3 is provided inside the shaft channel 101, and a stop ring 2 is located above the single-hole stop valve 2. The stop ring 2 is located above the ball or rubber stopper placed inside the shaft channel 101, and when the lower pressure is greater than the upper pressure, the stop ring 2 prevents the ball or rubber stopper from moving upward. An upper bearing 5 is provided on the outer ring of the multi-functional shaft 1, located below the single-hole stop valve 2, through an upper bearing seat 4, and a lower bearing 7 is provided through a lower bearing seat 6. Bearing covers 21 are provided on the outer wall of the multi-functional shaft 1 at the lower part of the upper and lower bearings 7. The arrangement of the upper bearing 5 and the lower bearing 7 enables the ball-throwing and stopper-throwing rotary circulation device to have both ball-throwing and stopper-throwing functions and a rotary circulation head function, thereby improving the adaptability of the ball-throwing and stopper-throwing rotary circulation device.

[0028] The multi-functional shaft 1 is equipped with an injection head 14, which is located between the upper bearing 5 and the lower bearing 7. Anti-loosening screws 15 are provided between the injection head 14 and the upper bearing seat 4 and the lower bearing seat 6 respectively, ensuring the stability of the injection head 14 installation. A combined seal 16 and a support ring 17 are provided between the injection head 14 and the outer wall of the multi-functional shaft 1, providing high sealing pressure and long service life. An injection channel 1401 is provided inside the injection head 14, which communicates with the shaft channel 101, facilitating connection to the manifold through the injection channel 1401. This allows mud or slurry to flow downwards from the manifold into the shaft channel 101 of the multi-functional shaft and into the drill string. In this application, the upper and lower bearings only bear the weight of the manifold, resulting in low stress on the upper and lower bearings and preventing jamming, thus ensuring the stability of the ball and plug rotary circulation device.

[0029] The injection channel 1401 of this application is two, and each injection channel 1401 is provided with a union seal ring 18 at the end away from the shaft channel 101. One of the injection channels 1401 is provided with a lifting lug 19 and a wing nut 20 at the end away from the shaft channel 101.

[0030] When the multifunctional ball-throwing and plug-throwing rotary circulation device of this application is used in specific ways:

[0031] 1) First, check whether the single-hole stop valve 2 is in the closed position, that is, ensure that the valve passage 2011 and the shaft passage 101 are disconnected. Otherwise, rotate the handwheel 202 to drive the valve body 201 to rotate, so that the valve passage 2011 and the shaft passage 101 are disconnected, so that the single-hole stop valve 2 rotates to the closed position. Then remove the stop ring 3, install the steel ball or rubber plug, and then install the stop ring 3. At this time, the ball or rubber plug cannot go down.

[0032] 2) Connect the top drive to the upper part of the multi-functional shaft 1 and the drill string to the lower part of the multi-functional shaft 1; connect the manifold to the injection channel 1401 without the lifting lug 18. When circulating mud or injecting mortar, the mud or mortar enters the shaft channel 101 of the multi-functional shaft from the manifold and flows downward into the drill string.

[0033] 3) During mud circulation, the single-hole stop valve 2 is in the closed position, and the mud or slurry flows downward from the manifold into the shaft channel 101 of the multi-functional shaft and into the drill string. When the lower pressure is greater than the upper pressure, the ball or rubber plug may move upward. In this case, it must not move upward under the action of the stop ring 3.

[0034] 4) When throwing the ball or the plug, loosen the safety screw 13, and then rotate the handwheel 10 clockwise by 90 degrees. At this time, the channel 2011 is connected to the shaft channel 101, and the ball or plug moves downward.

[0035] The multifunctional ball-and-plug rotary circulation device of this application is connected between the top drive and the upper part of the drill string. When throwing balls, simply rotating the handwheel 90 degrees allows the ball or plug to be inserted into the tubing, eliminating the need to unload the top drive. This achieves continuous operation and improves drilling efficiency and safety. It also overcomes the disadvantages of traditional ball-throwing methods, which are time-consuming and labor-intensive, as well as the environmental pollution caused by drilling mud ejection during top drive unloading. The device is not only simple and reliable in structure and flexible in operation, but also significantly saves manpower and drilling time, while avoiding operational risks, wellhead risks, and stuck pipe risks. Furthermore, the upper and lower bearings allow the ball-and-plug rotary circulation device to function as both a ball-and-plug device and a rotating circulation head, improving its adaptability.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A multi-functional pitching, throwing, and spinning cycle device, characterized by, It comprises a multifunctional shaft (1), a single-hole stop valve (2) and a stop ring (3). The inner wall of the multifunctional shaft (1) is provided with an axial channel (101) from top to bottom, and the multifunctional shaft (1) is provided with a mounting groove, and the single-hole stop valve (2) is arranged in the mounting groove. The single-hole stop valve (2) comprises a valve body (201) and a hand wheel (202), one end of the valve body (201) extends out of the multifunctional shaft (1), the hand wheel (202) is arranged on one end of the valve body (201) extending out of the multifunctional shaft (1), the valve body (201) is provided with a valve channel (2011), and the valve body (201) rotates in the mounting groove under the drive of the hand wheel (202) to realize the communication or disconnection between the valve channel (2011) and the axial channel (101). The axial channel (101) is provided with the stop ring (3), and the stop ring (2) is located at the upper part of the single-hole stop valve (2); the outer ring of the multifunctional shaft (1) is provided with the upper bearing (5) through the upper bearing seat (4) at the lower part of the single-hole stop valve (2), and the lower bearing (7) is arranged through the lower bearing seat (6). The multifunctional shaft (1) is provided with an injection head (14), and the injection head (14) is located between the upper bearing (5) and the lower bearing (7); the injection head (14) is provided with an injection channel (1401), and the injection channel (1401) is communicated with the axial channel (101).

2. The multi-functional pitching, throwing, and rotational cycling device of claim 1, wherein, The outer side of the mounting groove, located on the wall surface of the multifunctional shaft (1), is provided with an end cover (8), the end cover (8) is connected with the multifunctional shaft (1) through screws, a stopper pressing cap (9) is arranged between the end cover (8) and the valve body (201), the stopper pressing cap (9) and the end cover (8) are sleeved on the valve body (201), the stopper pressing cap (9) and the valve body (201) are sealed through a sealing ring (10), and the valve body (201) and the mounting groove are also sealed through a sealing ring (11).

3. The multi-functional pitching, throwing, and rotational cycling device of claim 2, wherein, A limiting block (11) is arranged between the hand wheel (202) and the end cover (8), the limiting block (11) is sleeved on the valve body (201), a limiting groove (12) is arranged on the outer edge of the limiting block (11), a limiting screw (801) is arranged on the end cover (8), the limiting screw (801) and the limiting groove (12) are matched with each other, the hand wheel (202) can only be rotated by 90 degrees in the positive and negative directions, and a safety screw (13) is detachably arranged between the hand wheel (202) and the end cover (8).

4. The multi-functional pitching, throwing, and rotational cycling device of claim 1, wherein, Anti-loosening screws (15) are arranged between the injection head (14) and the upper bearing seat (4) and the lower bearing seat (6); a combined seal (16) and a supporting ring (17) are arranged between the injection head (14) and the outer wall of the multifunctional shaft (1).

5. The multi-functional pitching, throwing, and rotational cycling device of claim 4, wherein, The injection channel (1401) is two, and a sealing ring (18) is arranged at the end of each injection channel (1401) away from the axial channel (101), one of the injection channels (1401) is provided with an ear (19) and a wing nut (20) at the end away from the axial channel (101).

6. The multi-functional pitching, throwing, and rotational cycling device of claim 1, wherein, A bearing cover (21) is arranged on the outer wall of the multifunctional shaft (1) at the lower part of the lower bearing (7).

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