Damping and speed-increasing device for petroleum drilling

Abstract

The invention relates to the field of drilling equipment, in particular to a damping and speed-increasing device for petroleum drilling, which comprises a lower joint, a middle joint, an upper joint, a turbine rotor, an outer magnet group, an inner magnet group and a rotary stabilizer, the middle joint is connected with the lower joint and positioned at the top of the lower joint, the upper joint is provided with a plurality of overflowing holes, and the turbine rotor is connected with the upper joint. The upper connector is fixed to the top of the middle connector, the turbine rotor is arranged below the overflowing hole in a rotating mode, the outer magnet set is fixed to the turbine rotor, the inner magnet set is arranged in the outer magnet set in a rotating mode, and the rotating stabilizer is fixed to the inner magnet set. The turbine rotor rotates along with flowing of fluid to drive the outer magnet to rotate, the outer magnet drives the inner magnet to rotate through magnetic coupling, and the inner magnet drives the rotating stabilizer to rotate to generate huge inertia to keep high stability, so that vibration generated during impact is reduced conveniently, and the drill bit works more stably.

Description

Technical Field

[0001] The invention relates to the field of drilling equipment, in particular to a damping and shock absorbing speed-increasing device for oil drilling. Background Art

[0002] During the drilling process, the drill rod will vibrate due to contact with the rock layer. These vibrations will not only affect the working efficiency of the drill bit, but may also cause equipment damage or failure. Therefore, it is very necessary to use an effective shock absorbing device.

[0003] Common shock absorbers include spring shock absorbers, hydraulic shock absorbers, and pneumatic shock absorbers. Spring shock absorbers use springs to absorb vibration energy. This type of shock absorber is suitable for moderate vibration. Hydraulic shock absorbers absorb impact energy through the flow of liquid under different pressures. They are suitable for high impact situations. Pneumatic shock absorbers use compressed gas as a buffer medium. This type of shock absorber can provide stable damping effect within a large working range.

[0004] The prior art provides an active shock absorber for oilfield drilling, which includes a power source, a magnetic coupling mechanism and a shock absorbing joint, wherein the upper end of the magnetic coupling mechanism is connected to the power source, and the lower end is connected to the shock absorbing joint; the shock absorbing joint includes a shock absorbing shaft, and an even number of semi-annular metal pendulum weights hinged on the shock absorbing shaft and spaced in the axial direction of the shock absorbing shaft; the magnetic coupling mechanism transmits the rotational motion of the power source to the shock absorbing shaft, thereby driving the pendulum weight to rotate; the pendulum weight generates an acceleration opposite to the vibration direction under the action of its own inertia and centripetal force, thereby performing shock absorption.

[0005] However, the above structure requires the addition of an additional power source, which increases the complexity of the overall structure and reduces the reliability of operation. Summary of the invention

[0006] The purpose of the present invention is to provide a damping and shock absorbing speed-increasing device for oil drilling, which is intended to drive the stabilizer to rotate through mud flow to reduce working vibration and improve the reliability of operation.

[0007] To achieve the above-mentioned purpose, the present invention provides a damping, shock absorbing and speed-up device for oil drilling, comprising a lower joint and a middle joint, wherein the middle joint is connected to the lower joint and is located at the top of the lower joint, and also comprises an upper joint, a turbine rotor, an outer magnet group, an inner magnet group and a rotation stabilizer, wherein the upper joint has a plurality of flow holes, the upper joint is fixed to the top of the middle joint, the turbine rotor is rotatably arranged below the flow holes, the outer magnet group is fixed to the turbine rotor, the inner magnet group is rotatably arranged in the outer magnet group, and the rotation stabilizer is fixed to the inner magnet group.

[0008] Wherein, the rotation stabilizer comprises an elastic coupling and a stabilizing gyroscope, the elastic coupling is connected to the inner magnet group, and the stabilizing gyroscope is connected to the elastic coupling.

[0009] Wherein, the rotation stabilizer further comprises a gyro outer cylinder, the gyro outer cylinder is arranged inside the lower joint, and the stabilizing gyro is rotatably arranged inside the gyro outer cylinder via a first bearing.

[0010] Wherein, the rotation stabilizer further comprises a rubber buffer layer, and the rubber buffer layer is arranged between the lower joint and the gyro outer cylinder.

[0011] Wherein, the rotation stabilizer further includes a damping liquid layer, and the damping liquid layer is arranged between the rubber buffer layer and the lower joint.

[0012] Wherein, the external magnet group includes an external magnet body, an external coupling cylinder, a second bearing and a support sleeve;

[0013] The outer coupling cylinder is clamped to the lower side of the turbine rotor, the outer magnet body is fixed to the outer side of the outer coupling cylinder, and the support sleeve is fixed to the inner side of the outer coupling cylinder through a second bearing.

[0014] Wherein, the outer magnet group further includes an outer protective tube, and the outer protective tube is arranged outside the outer magnet body.

[0015] Wherein, the inner magnet group includes an inner shaft, an inner magnet body, and a third bearing. The inner shaft is rotatably arranged in the support sleeve through the third bearing, and the inner magnet body is fixed on the outer side of the inner shaft close to the outer magnet body.

[0016] Wherein, the inner magnet group further includes an isolation sleeve, which is fixed on the supporting sleeve and is used to seal the space where the inner magnet body is located.

[0017] The present invention provides a damping and shock absorbing speed-up device for oil drilling, wherein the middle joint is connected to the lower joint to form a stable basic structure; the upper joint is fixedly mounted on the top of the middle joint and is equipped with a plurality of flow holes, the purpose of which is to guide the mud through the stator and impact the turbine rotor. The turbine rotor can rotate with the flow of the fluid, thereby generating kinetic energy. On the outside, a group of external magnets are fixed to the turbine rotor, so that the external magnets drive the internal magnets to rotate through magnetic coupling, and the internal magnets can drive the rotation stabilizer to rotate to generate a huge inertia to maintain high stability, reduce the impact caused by changes in external conditions, and at the same time accelerate the drilling process and improve work efficiency. This structure not only helps to reduce drilling costs, but also helps to protect drilling equipment from damage and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The present invention is a structural diagram of a damping, shock absorbing and speed-increasing device for oil drilling.

[0020] Figure 2 yes Figure 1 A partial enlargement of detail A.

[0021] Figure 3 yes Figure 1 A partial enlargement of detail B.

[0022] Lower joint 101, middle joint 102, upper joint 103, turbine rotor 104, outer magnet group 105, inner magnet group 106, rotation stabilizer 107, flow hole 108, elastic coupling 109, stabilizing gyroscope 110, gyroscope outer cylinder 111, rubber buffer layer 112, first bearing 113, damping liquid layer 114, outer magnet body 115, outer coupling cylinder 116, second bearing 117, support sleeve 118, outer casing 119, inner shaft 120, inner magnet body 121, third bearing 122, isolation sleeve 123. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1 to Figure 3The present invention provides a damping, shock absorbing and speed-increasing device for oil drilling, comprising a lower joint 101 and a middle joint 102, wherein the middle joint 102 is connected to the lower joint 101 and is located at the top of the lower joint 101, and further comprising an upper joint 103, a turbine rotor 104, an outer magnet group 105, an inner magnet group 106 and a rotation stabilizer 107, wherein the upper joint 103 has a plurality of flow holes 108, the upper joint 103 is fixed to the top of the middle joint 102, the turbine rotor 104 is rotatably arranged below the flow holes 108, the outer magnet group 105 is fixed to the turbine rotor 104, the inner magnet group 106 is rotatably arranged in the outer magnet group 105, and the rotation stabilizer 107 is fixed to the inner magnet group 106.

[0026] In this embodiment, the present invention is used to improve drilling efficiency and reduce vibration and wear during drilling. The middle joint 102 is connected to the lower joint 101 to form a stable basic structure; the upper joint 103 is fixedly mounted on the top of the middle joint 102 and is equipped with a plurality of flow holes 108. The purpose of designing these holes is to guide the mud through the stator and impact the turbine rotor 104. The turbine rotor 104 can rotate with the flow of the fluid, thereby generating kinetic energy. On the outside, a group of external magnets are fixed to the turbine rotor 104, so that the external magnets drive the internal magnets to rotate through magnetic coupling. The internal magnets can drive the rotation stabilizer 107 to rotate to generate huge inertia to maintain high stability, reduce the impact caused by changes in external conditions, and accelerate the drilling process and improve work efficiency. This structure not only helps to reduce drilling costs, but also helps to protect drilling equipment from damage and extend its service life.

[0027] The rotation stabilizer 107 includes an elastic coupling 109 and a stabilizing gyroscope 110 . The elastic coupling 109 is connected to the inner magnet group 106 , and the stabilizing gyroscope 110 is connected to the elastic coupling 109 .

[0028] The elastic coupling 109 is used to absorb vibration and impact. It is connected to the inner magnet group 106, and the stabilizing gyroscope 110 is linked with the inner magnet group 106 through the elastic coupling 109, providing a stable rotation axis through the characteristics of the gyroscope.

[0029] The rotation stabilizer 107 further includes a gyro outer cylinder 111 , which is disposed inside the lower joint 101 . The stabilizing gyro 110 is rotatably disposed inside the gyro outer cylinder 111 via a first bearing 113 .

[0030] In order to better place the stabilizing gyro 110, the rotation stabilizer 107 further includes a gyro outer cylinder 111, which is disposed in the inner space of the lower joint 101. The stabilizing gyro 110 can rotate freely in the gyro outer cylinder 111 through the first bearing 113. Such a design enables the stabilizing gyro 110 to maintain its rotation stability under various working conditions.

[0031] The rotation stabilizer 107 further includes a rubber buffer layer 112 , and the rubber buffer layer 112 is disposed between the lower joint 101 and the gyro outer cylinder 111 .

[0032] A rubber buffer layer 112 is provided between the lower joint 101 and the gyro outer cylinder 111. This layer of material can effectively absorb external shocks and vibrations and provide additional protection for internal components. The gyro, the high-density outer cylinder, and the buffer rubber layer form a damping structure to jointly reduce the vibration generated by the drill bit during operation.

[0033] The rotation stabilizer 107 further includes a damping liquid layer 114 , which is disposed between the rubber buffer layer 112 and the lower joint 101 .

[0034] A damping liquid layer 114 is provided between the rubber buffer layer 112 and the lower joint 101 . The existence of the damping liquid layer 114 can further improve the damping effect of the system and help the system to run more smoothly.

[0035] The external magnet group 105 includes an external magnet body 115, an external coupling tube 116, a second bearing 117 and a support sleeve 118; the external coupling tube 116 is snapped into place under the turbine rotor 104, the external magnet body 115 is fixed to the outside of the external coupling tube 116, and the support sleeve 118 is fixed to the inside of the external coupling tube 116 through the second bearing 117.

[0036] The outer coupling cylinder 116 is installed under the turbine rotor 104 by snap-fitting, so that it can rotate together with the turbine rotor 104, so that the outer magnet body 115 installed on the outer coupling cylinder 116 can be driven to rotate along with it. The support sleeve 118 is supported by the second bearing 117 to provide installation space for the inner magnet, making the whole device easier to assemble.

[0037] The outer magnet assembly 105 further includes an outer sheath 119 , and the outer sheath 119 is disposed outside the outer magnet body 115 .

[0038] In order to protect the outer magnet body 115 from damage, the outer magnet assembly 105 further includes an outer sleeve 119 disposed outside the outer magnet body 115 .

[0039] The inner magnet group 106 includes an inner shaft 120 , an inner magnet body 121 , and a third bearing 122 . The inner shaft 120 is rotatably disposed in the support sleeve 118 via the third bearing 122 . The inner magnet body 121 is fixed on the outer side of the inner shaft 120 close to the outer magnet body 115 .

[0040] The inner shaft 120 can form a rotating structure through the support of the third bearing 122, so that it can be connected to the coupling to drive the gyroscope to rotate. The inner magnet body 121 is driven to rotate with the outer magnet body 115 through magnetic coupling, making it more convenient to use.

[0041] The inner magnet group 106 further includes an isolation sleeve 123 , which is fixed on the support sleeve 118 and is used to seal the space where the inner magnet body 121 is located.

[0042] The isolation sleeve 123 can be used to isolate the space where the inner magnet body 121 is located from the external space, thereby preventing impurities from entering and damaging the magnet, thereby increasing the life of the device.

[0043] During operation, the lower joint 101 is rigidly connected to the drill bit (drill collar). When the drill bit vibrates to the left, the lower joint 101 is driven to vibrate to the left. The damping structure composed of the gyroscope, high-density outer cylinder, and buffer rubber layer is collided to the left by the lower joint 101 to absorb the vibration force, and moves slowly to the left, so that the vibration of the drill bit to the left is weakened. The drill bit moves back to the right due to elasticity and hits the slow left damping mechanism. This vibration is absorbed and offset. The radial vibration of the drill bit is weakened, and the cutting is smooth. The drill bit cuts smoothly, and no energy is accumulated in the axial direction, thereby reducing axial vibration.

[0044] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A damping and shock absorbing speed-up device for oil drilling, comprising a lower joint and a middle joint, wherein the middle joint is connected to the lower joint and is located on the top of the lower joint, characterized in that: It also includes an upper joint, a turbine rotor, an outer magnet group, an inner magnet group and a rotation stabilizer, wherein the upper joint has a plurality of flow holes, the upper joint is fixed to the top of the middle joint, the turbine rotor is rotatably arranged below the flow holes, the outer magnet group is fixed to the turbine rotor, the inner magnet group is rotatably arranged in the outer magnet group, and the rotation stabilizer is fixed to the inner magnet group.

2. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 1, characterized in that: The rotation stabilizer comprises an elastic coupling and a stabilizing gyroscope, wherein the elastic coupling is connected to the inner magnet group, and the stabilizing gyroscope is connected to the elastic coupling.

3. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 2, characterized in that: The rotation stabilizer further comprises a gyro outer cylinder, the gyro outer cylinder is arranged inside the lower joint, and the stabilizing gyro is rotatably arranged inside the gyro outer cylinder via a first bearing.

4. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 3, characterized in that: The rotation stabilizer further includes a rubber buffer layer, which is arranged between the lower joint and the gyro outer cylinder.

5. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 4, characterized in that: The rotation stabilizer further includes a damping liquid layer disposed between the rubber buffer layer and the lower joint.

6. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 5, characterized in that: The external magnet group includes an external magnet body, an external coupling cylinder, a second bearing and a support sleeve; The outer coupling cylinder is clamped to the lower side of the turbine rotor, the outer magnet body is fixed to the outer side of the outer coupling cylinder, and the support sleeve is fixed to the inner side of the outer coupling cylinder through a second bearing.

7. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 6, characterized in that: The outer magnet group further includes an outer sheath, which is arranged outside the outer magnet body.

8. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 7, characterized in that: The inner magnet group includes an inner shaft, an inner magnet body, and a third bearing. The inner shaft is rotatably arranged in the support sleeve through the third bearing, and the inner magnet body is fixed on the outer side of the inner shaft close to the outer magnet body.

9. A damping and shock absorbing speed-increasing device for oil drilling as claimed in claim 8, characterized in that: The inner magnet group further includes an isolation sleeve, which is fixed on the support sleeve and is used to close the space where the inner magnet body is located.

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