阅读说明：本技术 一种电磁控制扭矩离合装置 (Electromagnetic control torque clutch device ) 是由 刘少胡 甘泉泉 付必伟 于 2019-10-25 设计创作，主要内容包括：本发明涉及一种电磁控制扭矩离合装置,属石油钻井工具技术领域。外壳内一端活动安装有上牙嵌凸缘,外壳内另一端通过限位套和止推轴承活动安装有下中心管,下中心管的一端延伸至外壳外端,外壳内的下中心管端口内螺纹安装有上中心管；上中心管的一端延伸至上牙嵌凸缘的中心孔内,外壳内的下中心管上通过复位弹簧安装有下牙嵌凸缘,下牙嵌凸缘与上牙嵌凸缘活动啮合连接；该装置结构紧凑、操作平稳,解决了现有滑动钻井技术实施时产生的系列问题,提高了在大斜度井、水平井及大位移井钻井时定向钻进的效率。(The invention relates to an electromagnetic control torque clutch device, belonging to the technical field of petroleum drilling tools. An upper jaw flange is movably mounted at one end in the shell, a lower central tube is movably mounted at the other end in the shell through a limiting sleeve and a thrust bearing, one end of the lower central tube extends to the outer end of the shell, and an upper central tube is mounted in an internal thread at the port of the lower central tube in the shell; one end of the upper central tube extends into a central hole of the upper jaw flange, a lower jaw flange is arranged on the lower central tube in the shell through a return spring, and the lower jaw flange is movably meshed and connected with the upper jaw flange; the device has compact structure and stable operation, solves the series problems generated when the prior sliding drilling technology is implemented, and improves the directional drilling efficiency when drilling in highly deviated wells, horizontal wells and extended reach wells.)

1. The utility model provides an electromagnetic control torque clutch, it comprises last center tube (7), lower center tube (8), last jaw flange (2), lower jaw flange (9), electromagnetism group (6), reset spring (10), top connection (1) and shell, its characterized in that: an upper jaw flange (2) is movably mounted at one end in the shell, a lower central tube (8) is movably mounted at the other end in the shell through a limiting sleeve (11) and a thrust bearing (12), one end of the lower central tube (8) extends to the outer end of the shell, and an upper central tube (7) is mounted in an internal thread at the port of the lower central tube (8) in the shell; one end of the upper central tube (7) extends into the central hole of the upper jaw flange (2), a lower jaw flange (9) is arranged on the lower central tube (8) in the shell through a return spring (10), and the lower jaw flange (9) is movably engaged and connected with the upper jaw flange (2); an electromagnetic group (6) and a controller (21) are arranged on the circumference of the upper jaw flange (2), and a permanent magnet (19) is fixedly arranged at the end of the occlusion tooth of the lower jaw flange (9).

2. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: the shell is formed by connecting an upper shell (5) and a lower shell (13) through threads.

3. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: the upper jaw flange (2) is a three-stage reducing tubular body, one end of the upper jaw flange (2) extends to the outer end of the upper shell (5), an upper joint (1) is installed at the end of the upper jaw flange (2) extending to the outer end of the upper shell (5) in a threaded mode, and upper meshing teeth (22) are evenly distributed on the end face of the other end of the upper jaw flange (2); the reducing part of the upper jaw flange (2) at one side of the upper jaw teeth (22) is provided with a wiring through hole (25).

4. The electromagnetically controlled torque clutch apparatus as claimed in claim 3, wherein: and a pressure sensor (20) is embedded on the side end face of the upper occlusion tooth (22), and the pressure sensor (20) is connected with a controller (21) through a wire by a wiring through hole (25).

5. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: the lower jaw flange (9) is a two-stage reducing tubular body, lower occlusion teeth (23) corresponding to the upper occlusion teeth (22) are uniformly distributed on the end face of one end of the lower jaw flange (9), and the upper jaw flange (2) is in meshed connection with the lower jaw flange (9) through the matching of the upper occlusion teeth (22) and the lower occlusion teeth (24).

6. The electromagnetically controlled torque clutch apparatus as claimed in claim 5, wherein: the end of the lower occlusion tooth (23) is fixedly provided with a permanent magnet (19).

7. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: spline grooves are uniformly distributed on the circumference of the inner wall of the lower jaw flange (9), sliding keys corresponding to the spline grooves are uniformly distributed on the circumference of the lower central tube (8) corresponding to the lower jaw flange (9), and the lower jaw flange (9) is connected with the lower central tube (8) through the matching keys of the spline grooves and the sliding keys; the lower jaw flange (9) can slide along the axial direction of the lower central tube (8).

8. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: the upper jaw flange (2) is connected with the upper central tube (7) in a sliding and sealing manner.

9. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: an upper snap spring (3) is arranged between the outer side of the upper shell (5) and the upper jaw flange (2); a lower snap spring (14) is arranged between the outer side of the lower shell (13) and the lower central tube (8).

10. The electromagnetically controlled torque clutch apparatus as claimed in claim 1, wherein: the electromagnetic group (6) consists of an annular battery (6-1), a magnetism increasing rod (6-2) and an electromagnetic coil (6-3); a plurality of magnetism increasing rods (6-2) are installed on the end face of one end of the annular battery (6-1), the electromagnetic coil (6-3) is wound on the magnetism increasing rods (6-2), two ends of the electromagnetic coil (6-3) are connected with the annular battery (6-1) to form a loop, and the annular battery (6-1) is connected with the pressure sensor (20) and the controller (21) respectively.

Technical Field

The invention relates to an electromagnetic control torque clutch device, belonging to the technical field of petroleum drilling tools.

Background

At present, in the exploration and development process of petroleum and natural gas resources, the drilling operation plays a very important role, and is an important means for verifying and exploring a petroleum-containing structure, acquiring geological data and exploiting oil and gas resources. The petroleum industry is a high-risk capital-intensive and technology-intensive industry, and the drilling cost accounts for 60% -80% of the whole petroleum exploration and development cost, so that a new drilling method and device have important influence on the whole drilling engineering and even the petroleum industry.

Along with the change of exploration and development to unconventional oil and gas resources and deep oil and gas resources, in order to improve the yield and the recovery ratio of a single well and improve the overall development benefit of an oil field, the large-inclination and horizontal well is popularized in the oil and gas field. In particular, the shale gas is developed almost completely by adopting a horizontal well drilling mode. At present, in the drilling process of a large-inclination horizontal well, particularly in the sliding drilling process by adopting a bent shell mud motor, the drill rod does not rotate, so that a series of problems of large torque and friction resistance of the drill rod, unclean well, pressure supporting and the like are caused.

The prior art in China downloads a control signal and applies clutch engagement control force by changing the hanging weight, and the method is not suitable for highly-deviated wells and horizontal wells because the friction action of a drill rod and a well wall makes the axial movement and the transmission of the axial force uncertain under the condition. Therefore, it is necessary to develop a new torque clutch device to solve the above problems.

Disclosure of Invention

The invention aims to provide an electromagnetic control torque clutch device which has a compact structure and is stable in operation, can realize two working conditions of stable torque transmission or torque separation of a drill rod in a drilling process, is favorable for reducing the friction resistance and the torque of the drill rod during sliding drilling, reducing or preventing drilling pressure supporting and improving the directional drilling efficiency during drilling of a highly deviated well, a horizontal well and a highly displaced well, and aims to overcome the defects of the prior art.

The invention realizes the purpose through the following technical scheme:

the utility model provides an electromagnetic control torque clutch, it comprises last center tube, lower center tube, last dog flange, lower dog flange, electromagnetism group, reset spring, top connection and shell, its characterized in that: an upper jaw flange is movably mounted at one end in the shell, a lower central tube is movably mounted at the other end in the shell through a limiting sleeve and a thrust bearing, one end of the lower central tube extends to the outer end of the shell, and an upper central tube is mounted in an internal thread at the port of the lower central tube in the shell; one end of the upper central tube extends into a central hole of the upper jaw flange, a lower jaw flange is arranged on the lower central tube in the shell through a return spring, and the lower jaw flange is movably meshed and connected with the upper jaw flange; the periphery of the upper jaw flange is provided with an electromagnetic group and a controller, and the end head of the occlusion tooth of the lower jaw flange is fixedly provided with a permanent magnet.

The shell is formed by connecting an upper shell and a lower shell through threads.

The upper jaw flange is a three-stage reducing tubular body, one end of the upper jaw flange extends to the outer end of the upper shell, an upper joint is arranged at the end head of the upper jaw flange extending to the outer end of the upper shell in a threaded manner, and upper meshing teeth are uniformly distributed on the end face of the other end of the upper jaw flange; the diameter-changing part of the upper jaw flange at one side of the upper occlusion tooth is provided with a wiring through hole.

And a pressure sensor is embedded on the side end face of the upper occlusion tooth and is connected with the controller through a wire by a wiring through hole.

The lower jaw flange is a two-stage reducing tubular body, lower occlusion teeth corresponding to the upper occlusion teeth are uniformly distributed on the end face of one end of the lower jaw flange, and the upper jaw flange and the lower jaw flange are connected through the matching engagement of the upper occlusion teeth and the lower occlusion teeth.

And the end of the lower occlusion tooth is fixedly provided with a permanent magnet.

Spline grooves are uniformly distributed on the circumference of the inner wall of the lower jaw flange, sliding keys corresponding to the spline grooves are uniformly distributed on the circumference of the lower central tube corresponding to the lower jaw flange, and the lower jaw flange is connected with the lower central tube through the matching keys of the spline grooves and the sliding keys; the lower jaw flange may slide axially along the lower central tube.

The upper jaw flange is connected with the upper central tube in a sliding and sealing mode.

An upper clamp spring is arranged between the outer side of the upper shell and the upper jaw flange; a lower clamp spring is arranged between the outer side of the lower shell and the lower central tube.

The electromagnetic group consists of an annular battery, a magnetism increasing rod and an electromagnetic coil; a plurality of magnetic increasing rods are installed on the end face of one end of the annular battery, the electromagnetic coil is wound on the magnetic increasing rods, the two ends of the electromagnetic coil are connected with the annular battery to form a loop, and the annular battery is connected with the pressure sensor and the controller respectively.

Compared with the prior art, the invention has the beneficial effects that:

the electromagnetic control torque clutch device can overcome the defects generated in the implementation of the prior sliding drilling technology, such as: because the drilling rod does not rotate, the drilling rod torque is caused, the friction resistance is large, the well is not clean, the pressure supporting and the like series problems, the structure that the upper jaw flange and the lower jaw flange are meshed and can be separated and reset is provided, the structure is compact, the operation is stable, two working conditions that the drilling rod can stably transmit the torque or separate the torque can be realized in the drilling process according to the requirements, the friction resistance and the torque of the drilling rod during the sliding drilling are favorably reduced, the drilling pressure supporting is reduced or prevented, and the directional drilling efficiency during the drilling of a highly deviated well, a horizontal well and a highly displaced well is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the upper and lower jaw flanges;

FIG. 4 is a schematic view of a cross-sectional configuration A-A illustrating the engagement of the upper and lower jaw flanges;

FIG. 5 is a schematic view of the cross-sectional configuration B-B of the mating lower center tube and lower jaw flange;

FIG. 6 is a schematic diagram of an electromagnetic assembly according to the present invention;

FIG. 7 is a schematic diagram of the working principle of the electromagnetic assembly, i.e., the pressure sensor;

fig. 8 is a schematic view of the working state of the present invention.

In the figure: 1. the device comprises an upper connector, 2, an upper jaw flange, 3, an upper clamp spring, 4, a sealing ring, 5, an upper shell, 6, an electromagnetic group, 6-1, an annular battery, 6-2, a magnetism increasing rod, 6-3, an electromagnetic coil, 7, an upper central tube, 8, a lower central tube, 9, a lower jaw flange, 10, a reset spring, 11, a limiting sleeve, 12, a thrust bearing, 13, a lower shell, 14, a lower clamp spring, 15, a wellhead device, 16, a drill rod, 17, an electromagnetic control torque clutch device, 18, a power drilling tool, 19, a permanent magnet, 20, a pressure sensor, 21, a controller, 22, upper jaw teeth, 23, lower jaw teeth, 24, a protective elastic sheet, 25 and a wiring through hole.

Detailed Description

The electromagnetic control torque clutch device is composed of an upper central tube 7, a lower central tube 8, an upper jaw flange 2, a lower jaw flange 9, an electromagnetic group 6, a return spring 10, an upper joint 1 and a shell, wherein the shell is formed by connecting an upper shell 5 and a lower shell 13 through threads. An upper jaw flange 2 is movably arranged at one end in the shell. The upper jaw flange 2 is a three-stage reducing tubular body, one end of the upper jaw flange 2 extends to the outer end of the upper shell 5, and an upper joint 1 is installed at the end head of the upper jaw flange extending to the outer end of the upper shell 5 in a threaded mode so as to be connected with a drill rod in work. The end surface of the other end of the upper jaw flange 2 is evenly provided with upper occlusion teeth 22; a pressure sensor 20 is embedded on the side end face of the tooth root of one of the upper occlusion teeth 22, a protective elastic sheet 24 is arranged on the end head of the pressure sensor 20, one end of the protective elastic sheet 24 is welded with the side end face of the upper occlusion tooth 22, and the other end of the protective elastic sheet 24 is in contact connection with the side end face of the upper occlusion tooth 22; to avoid damage to the pressure sensor 20 during the return engagement of the upper and lower jaw flanges 2, 9. The reducing part of the upper jaw flange 2 at one side of the upper occlusion tooth 22 is provided with a wiring through hole 25; the upper jaw flange 2 is circumferentially provided with an electromagnet assembly 6 and a controller 21. The electromagnetic group 6 consists of an annular battery 6-1, a magnetism increasing rod 6-2 and an electromagnetic coil 6-3; a plurality of magnetism increasing rods 6-2 are installed on the end face of one end of the annular battery 6-1, the electromagnetic coil 6-3 is wound on the magnetism increasing rods 6-2, and the two ends of the electromagnetic coil 6-3 are connected with the annular battery 6-1 to form a loop. The pressure sensor 20 is connected with the controller 21 through a wiring through hole 25 by a lead wire to upload a torque signal to the controller 21, and the ring battery 6-1 is connected with the pressure sensor 20 and the controller 21, respectively, to provide an operating power supply in operation. In operation, the pressure sensor, the electromagnetic set 6 and the controller 21 rotate with the upper jaw flange 2.

The pressure sensor 20 and the controller 21 of the electromagnetically controlled torque clutch device are commercially available, and the pressure sensor 20 can be available in a variety of models, including but not limited to, OMEGA brand PXM600MU-350 BARCV;

the controller 21 is a 51-chip microcomputer; the control unit 21 is mounted on the upper jaw flange 2 on the side of the magnet assembly 6 via an annular mounting base.

A lower central tube 8 is movably arranged at the other end in the shell through a limiting sleeve 11 and a thrust bearing 12, and a sealing ring 4 is arranged between the lower central tube 8 and the shell. One end of the lower central tube 8 extends to the outer end of the housing, and the lower central tube 8 extending to the outer end of the housing is used for installing a lower joint so as to install a drilling tool during operation. An upper central pipe 7 is arranged at the inner thread of the port of a lower central pipe 8 in the shell; one end of the upper central tube 7 extends into the central hole of the upper jaw flange 2, the upper jaw flange 2 is connected with the upper central tube 7 in a sliding and sealing mode, and the lower jaw flange 9 is installed on the lower central tube 8 in the shell through a return spring 10.

The lower jaw flange 9 is a two-stage reducing tubular body, lower occlusion teeth 23 corresponding to the upper occlusion teeth 22 are uniformly distributed on the end face of one end of the lower jaw flange 9, and permanent magnets 19 are fixedly arranged at the ends of the lower occlusion teeth 23. The upper jaw flange 2 is connected with the lower jaw flange 9 through the matching and meshing of the upper occlusion teeth 22 and the lower occlusion teeth 23. Spline grooves are uniformly distributed on the circumference of the inner wall of the lower jaw flange 9, splines corresponding to the spline grooves are uniformly distributed on the circumference of the lower central tube 8 corresponding to the lower jaw flange 9, and the lower jaw flange 9 is connected with the lower central tube 8 through the matching keys of the spline grooves and the sliding keys; when the water-cooled generator works, the lower jaw flange 9 can axially slide along the lower central tube 8 under the action of external force.

An upper clamp spring 3 is arranged between the outer side of an upper shell 5 of the electromagnetic control torque clutch device and an upper jaw flange 2; a lower clamp spring 14 is arranged between the lower shell 13 and the lower central tube 8 to limit the shell.

The electromagnetic control torque clutch device monitors the torque of the device in the running process at any time through the pressure sensor 20, when the torque exceeds a set value, the controller 21 starts the electromagnetic group 6 to work, so that the meshing state between the upper jaw flange 2 and the lower jaw flange 9 is released, and the electromagnetic control torque clutch device specifically comprises the following steps:

the drill rod drives the upper jaw flange 2 to rotate through the upper joint 1, the upper jaw flange 2 drives the lower central tube 8 to rotate through the lower jaw flange 9, and then the lower joint and the drilling tool are driven to rotate; torque transmission is realized; when the torque of the drilling tool is blocked exceeds a set value, the pressure sensor 20 uploads a collected torque signal to the controller 21, the controller 21 sends a signal for switching on a power supply to the electromagnetic coil 6-3 through a signal switch, and the electromagnetic coil 6-3 is switched on to generate a magnetic pole.

The permanent magnets 19 are magnetically aligned with the poles generated by the electromagnet assembly 6. The magnetic force generated by the electromagnetic group 6 penetrates through the upper jaw flange 2 and pushes the lower jaw flange 9 to axially slide through the principle of 'homopolar repulsion' between the magnetic force and the permanent magnet 19, so that the meshed state between the upper jaw flange 2 and the lower jaw flange 9 is released, and in the process, the lower jaw flange 9 simultaneously compresses the return spring 10 to store energy.

After the meshing state between the upper jaw flange 2 and the lower jaw flange 9 is released; the upper jaw flange 2 continues to rotate along with the upper joint 1, and the lower jaw flange 9 does not rotate any more; therefore, the problem of drill breaking caused by overlarge torsion is solved.

After the meshing state between the upper jaw flange 2 and the lower jaw flange 9 is released; the torque value detected by the pressure sensor 20 is 0, at the moment, the pressure sensor 19 transmits a signal to the controller 21, the controller 21 sends a signal for turning off the power supply to the electromagnetic coil 6-3 through a signal switch, the electromagnetic coil 6-3 is powered off, the electromagnetic group 6 stops working and does not generate magnetic force any more, the lower jaw flange 9 slides and resets towards the upper jaw flange 2 under the action of the reset spring 10 and is re-meshed with the upper jaw flange 2, and the lower jaw flange 9 rotates synchronously under the driving of the upper jaw flange 2 again, so that torque combination is realized. During the process of re-meshing the lower jaw flange 9 with the upper jaw flange 2, namely during the process of inserting the lower jaw teeth 23 of the lower jaw flange 9 into the upper jaw teeth 22, the lower jaw flange firstly contacts with the protective elastic sheet 24 and deforms the protective elastic sheet, the extrusion force generated during the insertion process of the lower jaw teeth 23 is transmitted to the pressure sensor 20 through the protective elastic sheet 24, and the protective elastic sheet 24 plays a role of guiding the lower jaw teeth 23 during the process, so that the pressure sensor 20 is prevented from being damaged during the insertion process of the lower jaw teeth 23.

This electromagnetic control torque clutch device compact structure, operate steadily, through last dog collar 2 and the meshing of lower dog collar 9 and the structure that can separate and reset again, realized that the drilling rod can steadily transmit two kinds of operating modes of moment of torsion or separation moment of torsion, solved the current slip drilling technique produce when implementing if: because the drill rod 16 does not rotate, the problems of large torque, friction resistance, pressure supporting and the like of the drill rod 16 are caused, the friction resistance and the torque of the drill rod 16 during sliding drilling are reduced, the drilling pressure supporting is reduced or prevented, and the directional drilling efficiency during drilling of a highly deviated well, a horizontal well and a large-displacement well is improved.