Vibration resistance reduction device

Abstract

The utility model provides a vibration resistance reducing device which comprises an upper connector, an outer cylinder and a lower connector which are communicated in sequence, and is used for jointly limiting a channel for fluid movement. Wherein a driving mechanism, a liquid inlet mechanism communicated with the channel and a vibration mechanism which are connected in sequence are arranged in the channel, the driving mechanism is configured to allow the driving mechanism to rotate when being in contact with fluid, and the liquid inlet mechanism is mutually communicated with the vibration mechanism and configured to enable the liquid inlet mechanism to rotate when the fluid passes through and rotates. And radial and axial acting forces are periodically generated. In this way, the device can periodically vibrate in the radial direction and the axial direction. Therefore, the technical problems that in the prior art, an oscillator is high in energy consumption and single in oscillating force direction can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling tools, and particularly relates to a vibration drag reduction device. Background Art

[0002] With the continuous improvement of drilling technology, there are more and more extended reach wells and horizontal wells with long horizontal sections, and their wellbore trajectories are becoming increasingly complex, and the friction resistance is getting larger and larger. During the drilling process, problems such as sticking to the bottom and difficulty in changing the tool face often occur. Especially during sliding drilling, it is impossible to apply a real and effective drilling pressure to the drill bit, resulting in low drilling efficiency.

[0003] In the prior art, a hydraulic oscillator is often used to solve the above problems. Its basic principle is to generate axial or radial vibration along the drill string through hydraulic action, and use the vibration to convert static friction into dynamic friction, reduce the friction resistance during drilling, improve the drilling pressure transmission effect, and thus increase the mechanical drilling rate. Currently, the two types of hydraulic oscillators that are more commonly used are the screw-driven disk valve type and the turbine-driven disk valve type respectively.

[0004] Both of these tools adopt the structure of a moving disk valve and a static disk valve to change the flow area of the internal fluid, thereby generating periodic pressure pulses and then generating axial vibration. Although this method can reduce the friction resistance during drilling, the oscillating force generated by these two tools is proportional to the pressure loss of the tool itself, that is, the greater the pressure loss, the greater the oscillating force, and the smaller the pressure loss, the smaller the oscillating force. However, the greater the pressure loss, the higher the requirements for drilling equipment, and the energy consumption will also increase. In addition, the direction of the oscillating force generated by these two tools is single, almost only in the axial direction. Summary of the Utility Model

[0005] To overcome at least one or more of the above-mentioned defects in the prior art, the utility model provides a vibration drag reduction device, which includes an upper sub, an outer barrel and a lower sub connected in sequence to jointly define a channel for fluid movement.

[0006] Wherein, a driving mechanism, a liquid inlet mechanism connected to the channel and a vibration mechanism are sequentially arranged in the channel. The driving mechanism is configured to allow rotation when it comes into contact with the fluid. The liquid inlet mechanism is in communication with the vibration mechanism and is configured to periodically generate radial and axial acting forces during the passage and rotation of the fluid.

[0007] In one embodiment, the vibration mechanism includes a connecting rod for communicating with the liquid inlet mechanism. The connecting rod and the lower sub are configured to jointly define a passage for the fluid to move radially outward, and an opening component for periodically opening the passage is further arranged on the connecting rod.

[0008] In one embodiment, the opening component includes a plugging portion sleeved on the connecting rod. The plugging portion is configured to be capable of reciprocating axially along the path formed by the connecting rod, and during the axial reciprocating movement, periodically open the passageway.

[0009] In one embodiment, the opening component further includes an actuating portion relatively fixed on the connecting rod. The actuating portion is configured to periodically drive the plugging portion to reciprocate axially along the path formed by the connecting rod during the rotation of the connecting rod.

[0010] In one embodiment, the plugging portion includes a sleeve sleeved on the connecting rod and a force-receiving portion provided at the end of the sleeve. The free end of the actuating portion is eccentrically formed along the axis to form an eccentric portion. The eccentric portion is arranged to cooperate with the force-receiving portion, and during the rotation of the eccentric portion, periodically drive the plugging portion to reciprocate axially along the path formed by the connecting rod.

[0011] In one embodiment, a limiting groove is further provided on the plugging portion along the axis of the plugging portion, and a limiting portion is further provided on the lower joint. The limiting portion extends into the limiting groove for limiting the axial movement space of the plugging portion.

[0012] In one embodiment, a receiving portion extending radially inward is further provided on the inner wall of the lower joint. The receiving portion is configured to periodically form a path for the axial movement of the fluid between the receiving portion and the connecting rod during the rotation of the connecting rod.

[0013] In one embodiment, a second through hole is provided on the connecting rod. The receiving portion includes a sealing member connected together for sealing the second through hole and a channel member for forming a path for the axial movement of the fluid with the second through hole.

[0014] In one embodiment, between the second through hole and the channel member, when the passageway for the fluid to move radially outward is opened by the plugging portion, the second through hole and the channel member correspond to each other and form a path for the axial movement of the fluid.

[0015] In one embodiment, a throttle nozzle is further provided at the free end of the connecting rod. The throttle nozzle is configured to be capable of slowing down the outflow speed of the fluid in the connecting rod.

[0016] Generally speaking, compared with the prior art, the above technical solutions conceived by the utility model can at least achieve the following beneficial effects:

[0017] In the present utility model, an upper joint, an outer cylinder, and a lower joint are provided and connected in sequence, and the upper joint, the outer cylinder, and the lower joint jointly define a channel for fluid movement. At the same time, a driving mechanism, a liquid inlet mechanism connected to the channel, and a vibration mechanism are sequentially arranged in the channel, and the driving mechanism is configured to allow rotation when in contact with the fluid. In addition, the liquid inlet mechanism and the vibration mechanism are interconnected and configured to periodically generate radial and axial forces during the passage and rotation of the fluid. In this way, the device can vibrate periodically along the radial and axial directions. Thereby, the technical problems of high energy consumption and single oscillation force direction in the prior art can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The embodiments of the present utility model will be described in detail below with reference to the drawings. In the figures:

[0019] Figure 1 Schematically shows the overall structure of the vibration drag reduction device according to the present utility model;

[0020] Figure 2 Schematically shows the overall structure of the cooperation between the liquid inlet mechanism and the vibration mechanism of the vibration drag reduction device according to the present utility model;

[0021] Figure 3 Schematically shows the overall structure of the plugging part of the vibration drag reduction device according to the present utility model;

[0022] Figure 4 Schematically shows the overall structure of the actuating part of the vibration drag reduction device according to the present utility model;

[0023] Figure 5 Schematically shows the overall structure of the connecting rod of the vibration drag reduction device according to the present utility model rotating clockwise by 45°;

[0024] Figure 6 Schematically shows the overall structure of the connecting rod of the vibration drag reduction device according to the present utility model rotating clockwise by 90°;

[0025] Figure 7 Schematically shows the overall structure of the connecting rod of the vibration drag reduction device according to the present utility model rotating clockwise by 135°;

[0026] Figure 8 Schematically shows the overall structure of the connecting rod of the vibration drag reduction device according to the present utility model rotating clockwise by 180°.

[0027] It should be noted that the drawings are not necessarily drawn to actual scale.

[0028] In all the drawings, the same reference numerals denote the same technical features, specifically: 100 - vibration drag reduction device; 1 - upper joint; 2 - outer cylinder; 3 - lower joint; 31 - liquid outlet hole; 32 - limiting part; 33 - receiving part; 331 - seal; 332 - channel member; 4 - channel; 5 - drive mechanism; 6 - liquid inlet mechanism; 61 - liquid inlet hole; 7 - vibration mechanism; 71 - connecting rod; 711 - first through hole; 712 - boss; 713 - second through hole; 72 - opening assembly; 721 - plugging part; 7211 - sleeve; 7212 - stress part; 7213 - limiting groove; 722 - actuating part; 7221 - eccentric part; 7222 - pin hole; 7223 - pin; 8 - throttle nozzle; 9 - bearing. Detailed implementation mode

[0029] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a vibration drag reduction device of the present invention with reference to the drawings.

[0030] For convenience, the direction along the extension of the upper joint is referred to as "axial direction", "longitudinal direction", "vertical direction" or similar terms, and the direction perpendicular to the "axial direction" is referred to as "radial direction", "transverse direction", "horizontal direction" or similar terms.

[0031] As Figure 1 shown, an embodiment of the present invention provides a vibration drag reduction device 100, including an upper joint 1, an outer cylinder 2 and a lower joint 3 that are connected in sequence. In this way, the upper joint 1, the outer cylinder 2 and the lower joint 3 jointly define a channel 4 for the fluid to move, and the fluid can move along the channel 4.

[0032] Among them, the upper joint 1 is configured to be connected to a drill string or coiled tubing (not shown in the figure), so that the fluid located in the drill string or coiled tubing can enter the channel 4 along the upper joint 1. At the same time, the lower joint 4 is configured to be connected to a drill pipe or heavy drill pipe (not shown in the figure), so that the fluid moving along the channel 4 can move onto the drill pipe or heavy drill pipe. In this way, the fluid can enter the channel 4 from the coiled tubing and move along the path constructed by the channel 4 until it contacts the drill pipe or heavy drill pipe, thereby applying a force to the drill pipe or heavy drill pipe.

[0033] In one embodiment, as Figure 1As shown in the figure, a driving mechanism 5, a liquid inlet mechanism 6, and a vibration mechanism 7 that are connected in sequence are further provided in the channel 4. Among them, the liquid inlet mechanism 6 and the vibration mechanism 7 are arranged to be in communication with each other, and a liquid inlet hole 61 for communicating with the channel 4 is provided on the liquid inlet mechanism 6. In this way, the fluid located in the channel 4 can enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move along the liquid inlet mechanism 6 and the vibration mechanism 7.

[0034] At the same time, the driving mechanism 5 is configured to be able to contact the fluid in the channel 4 and generate rotation during the process of contacting the fluid. In this way, the fluid located in the channel 4 can drive the driving mechanism 5 to rotate, and during the process of driving the driving mechanism 4 to rotate, it can also enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move to the vibration mechanism 7. The vibration mechanism 7 is configured to periodically generate axial and radial acting forces when receiving the fluid from the liquid inlet mechanism 6 during the rotation process, so that the device 100 vibrates axially and radially. Thus, the technical problems of high energy consumption and single direction of the oscillation force in the prior art can be solved.

[0035] In this setting mode, when it is necessary to make the device 100 generate axial and radial vibrations, fluid is input into the channel 4. At this time, the fluid will drive the driving mechanism 5 to rotate, and the driving mechanism 5 will drive the liquid inlet mechanism 6 and the vibration mechanism 7 to rotate together. At the same time, the fluid will also enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move along the liquid inlet mechanism 6 to the vibration mechanism 7. In this way, the vibration mechanism 7 can periodically generate axial and radial acting forces, so that the device 100 vibrates axially and radially periodically.

[0036] In one embodiment, as Figure 2 shown, the vibration mechanism 7 includes a connecting rod 71 for communicating with the liquid inlet mechanism 6, and a plurality of first through holes 711 are provided on the connecting rod 71. The first through holes 711 are configured to communicate with the inside of the connecting rod 71. In this way, the fluid from the liquid inlet mechanism 6 can move along the connecting rod 71 and the first through holes 711 that communicate with the connecting rod 71.

[0037] At the same time, as Figure 1 shown, at least one liquid outlet hole 31 that penetrates the wall surface of the lower joint 3 and is used to communicate with the first through holes 711 is provided on the lower joint 3. In this way, the connecting rod 71, the first through holes 711, and the liquid outlet hole 31 can jointly form a path for the fluid to move radially outward, so that the fluid from the liquid inlet mechanism 6 can move radially to the outside along the connecting rod 71, the first through holes 711, and the liquid outlet hole 31.

[0038] In one embodiment, as Figure 2 shown, the vibration mechanism 7 further includes an opening component 72, and the opening component 72 is configured to periodically open a passage for the fluid to move radially outwardly jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31 during the rotation of the connecting rod 71.

[0039] In this embodiment, as Figure 2 shown, the opening component 72 includes a blocking portion 721 sleeved on the connecting rod 71, and the blocking portion 721 is configured to be able to reciprocate axially along the connecting rod 71 and periodically open the first through hole 711 during the reciprocating motion. In this way, the passage for the fluid to move radially outwardly jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31 can be periodically opened, so that the fluid can periodically move radially outwardly.

[0040] In addition, as Figure 2 shown, the opening component 72 further includes an actuating portion 722, and the actuating portion 722 is sleeved on the connecting rod 71 and is relatively fixed to the connecting rod 71. In this way, the actuating portion 722 can rotate synchronously with the connecting rod 71 when the connecting rod 71 rotates, and periodically drives the blocking portion 721 to move axially along the connecting rod 71 during this process, so as to periodically open the passage for the fluid to move radially outwardly jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31.

[0041] In this setting mode, during use, fluid is input into the channel 4. At this time, the fluid will drive the driving mechanism 5 to rotate, and the driving mechanism 5 will drive the liquid inlet mechanism 6 and the connecting rod 71 to rotate together. At the same time, the fluid will also enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move along the liquid inlet mechanism 6 into the connecting rod 71.

[0042] During this process, as Figures 5 to 8 shown, the connecting rod 71 will drive the actuating portion 722 to move synchronously, and the actuating portion 722 will continuously apply a force to the blocking portion 721, so as to drive the blocking portion 721 to continuously reciprocate axially along the connecting rod 71.

[0043] At this time, the blocking portion 721 can periodically open the passage for the fluid to move radially outwardly jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31, so that the fluid located in the connecting rod 71 can periodically move radially outwardly from the passage. In this way, the fluid is discharged to the outside periodically in the radial direction, so that the motion state of the fluid has a sudden change. Thus, the connecting rod 71 can generate vibration in the radial direction.

[0044] In one embodiment, as Figure 3 shown, the plugging portion 721 includes a sleeve 7211 sleeved on the connecting rod 71, and a force-receiving portion 7212 provided at the end of the sleeve 7211 for abutting against the actuating portion 722 together. Among them, as Figure 4 shown, the actuating portion 722 is provided as a cylindrical structure sleeved on the connecting rod 71, and an eccentric portion 7221 eccentric along the axis is formed at the free end of the actuating portion 722. The force-receiving portion 7212 is arranged to cooperate with the eccentric portion 7221, and when the eccentric portion 7221 rotates, it can actuate the force-receiving portion 7212 to drive the sleeve 7211 to reciprocate axially along the path constructed by the connecting rod 71.

[0045] Meanwhile, as Figure 3 shown, a limiting groove 7213 is further provided on the plugging portion 721. And, as Figure 1 shown, a limiting portion 32 is further provided on the lower joint 3. The limiting portion 32 extends into the limiting groove 7213 and is used to selectively abut against the two ends of the limiting groove 7213. In this way, the plugging portion 721 can only reciprocate axially along the connecting rod 7, and the axially moving space of the plugging portion 721 is jointly defined by the mutually cooperating limiting groove 7213 and the limiting portion 32.

[0046] In addition, as Figure 4 shown, pin holes 7222 are respectively provided on the actuating portion 722 and the connecting rod 71. The pin holes 7222 are configured to accommodate a pin 7223 and cooperate with the pin 7223 together. In this way, the actuating portion 722 can be relatively fixed to the connecting rod 71 by the pin 7223.

[0047] In this setting mode, when the connecting rod 71 rotates, it can drive the actuating portion 722 to rotate together. During this process, the eccentric portion 7221 actuates the plugging portion 721 to reciprocate axially on the connecting rod 71, thereby periodically opening the first through hole 711. In this way, the passage for the fluid to move radially outward jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31 is periodically opened.

[0048] Specifically, when the distal end of the eccentric portion 7221 abuts against the proximal end of the force-receiving portion 7212, the axial length jointly formed by the plugging portion 721 and the actuating portion 722 is the shortest, and the plugging portion 721 completely opens the first through hole 711.

[0049] When the distal end of the eccentric portion 7221 abuts against the distal end of the force-receiving portion 7212, the axial length formed by the blocking portion 721 and the actuating portion 722 together is the longest, and the blocking portion 721 completely closes the first through hole 711. However, as the actuating portion 722 continues to rotate, the distal end of the eccentric portion 7221 will periodically abut against the proximal end of the force-receiving portion 7212. Thereby, the passage for the fluid to move radially outward is periodically opened.

[0050] According to a preferred embodiment of the present invention, as Figure 3 shown, two force-receiving portions 7212 are provided and are symmetrically distributed at both ends of the sleeve 7211. At the same time, as Figure 2 shown, two actuating portions 722 are also provided and are respectively located on the upper and lower sides of the blocking portion 721, and the eccentric portions 7221 are arranged in a relative manner.

[0051] Specifically, when the distal end of the eccentric portion 7221 above the blocking portion 721 abuts against the distal end of the force-receiving portion 7212, the distal end of the eccentric portion 7221 below the blocking portion 721 abuts against the proximal end of the force-receiving portion 7212. In this way, both the eccentric portion 7221 above the blocking portion 721 and the eccentric portion 7221 below the blocking portion 721 can actuate the blocking portion 721 to move axially along the connecting rod 71. Thereby, the stability of the device 100 can be improved.

[0052] In one embodiment, as Figure 2 shown, a boss 712 extending radially outward along the connecting rod 71 is further provided on the connecting rod 71, and the boss 712 is configured to receive the actuating portion 722 below the blocking portion 721. At the same time, as Figure 1 shown, a receiving portion 33 extending radially inward along the inner wall of the lower joint 3 is further provided on the lower joint 3, and the receiving portion 33 is configured to selectively receive the boss 712. In this way, the vibration mechanism 7 is stably arranged in the channel 4.

[0053] At the same time, as Figure 2 shown, a second through hole 713 is further provided on the connecting rod 71, and the second through hole 713 is configured to cooperate with the receiving portion 33, and when the blocking portion 721 opens the first through hole 711, an axial passage for fluid movement is allowed to be formed between the second through hole 713 and the receiving portion 33.

[0054] In this embodiment, as Figure 1As shown, the receiving part 33 includes a seal 331 and a channel member 332 connected to the seal 331. The seal 331 and the channel member 332 are used to jointly form a space for accommodating the connecting rod 71.

[0055] Among them, as Figure 1 shown, the seal 331 is configured to be connected and abutted against the connecting rod 71 for sealing the second through hole 713. The channel member 331 is configured to have a radial thickness smaller than that of the seal 331. In this way, when the second through hole 713 corresponds to the seal 331, the second through hole 713 can be blocked by the seal 331. However, when the second through hole 713 corresponds to the channel member 332, a channel for the axial movement of the fluid can be jointly formed between the second through hole 713 and the channel member 332, so that the fluid can move out along the second through hole 713 and move axially along the channel.

[0056] According to a preferred embodiment of the present invention, the inner wall surface areas of the seal 331 and the channel member 332 are configured to be equal.

[0057] In this setting, as Figures 5 to 8 shown, when the connecting rod 71 rotates, it can drive the actuating part 722 to rotate together. During this process, the eccentric part 7221 reciprocates the actuating and blocking part 721 axially. In this way, the channel for the radial outward movement of the fluid jointly formed by the connecting rod 71, the first through hole 711, and the liquid outlet hole 31 is periodically opened.

[0058] At the same time, as the connecting rod 71 continues to rotate, the second through hole 713 on the connecting rod 71 will correspond to the channel member 332, and the space for the fluid movement jointly formed between the second through hole 713 and the channel member 332 will be periodically opened. At this time, the fluid in the connecting rod 71 will move along the radial channel jointly formed by the first through hole 711 and the liquid outlet hole 31, and the axial channel jointly formed between the second through hole 713 and the channel member 332.

[0059] According to a preferred embodiment of the present invention, as Figure 1 shown, a throttle nozzle 8 is further provided at the free end of the connecting rod 71. The throttle nozzle 8 is configured to slow down the outflow speed of the fluid in the connecting rod 71.

[0060] In this setting, during use, fluid is input into the channel 4. At this time, the fluid will drive the driving mechanism 5 to rotate, and the driving mechanism 5 will drive the liquid inlet mechanism 6 and the connecting rod 71 to rotate together. At the same time, the fluid will also enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move along the liquid inlet mechanism 6 into the connecting rod 71.

[0061] During this process, as Figures 5 to 8 shown, the connecting rod 71 will drive the actuating part 722 to move synchronously, and cause the actuating part 722 to continuously apply a force to the blocking part 721, so as to drive the blocking part 721 to continuously reciprocate axially along the connecting rod 71.

[0062] At this time, as Figure 8 shown, the blocking part 721 can periodically open the channel for the fluid to move radially outward, which is jointly formed by the connecting rod 71, the first through hole 711 and the liquid outlet hole 31, so that the fluid located in the connecting rod 71 can periodically move from the radial channel to the outside.

[0063] Moreover, as Figure 8 shown, as the connecting rod 71 continuously rotates, the second through hole 713 located on the connecting rod 71 will correspond to the channel member 332, and the fluid located in the connecting rod 71 will move to the outside along the channel formed jointly by the second through hole 713 and the channel member 332 for the fluid to move axially. Thus, the fluid moves smoothly to the outside both radially and axially. At this time, the vibration mechanism 7 does not generate a force both radially and axially.

[0064] However, as Figure 5 , 6 shown, when the actuating part 722 blocks the first through hole 711, making the flow area of the first through hole 711 the smallest, the second through hole 713 will correspond to the seal 331, and the seal 331 will block the second through hole 713, making the second through hole 713 in a closed state. At this time, as the connecting rod 71 continuously rotates, the fluid located in the connecting rod 71 will radially eject outward from the first through hole 711. Thus, the device 100 generates a force radially.

[0065] Moreover, as Figure 5 , 6 shown, the fluid located in the connecting rod 71 will also continuously move downward along the connecting rod 71 and be discharged from the throttle nozzle 8 provided at the free end of the connecting rod 71. At this time, the pressure at the inlet of the throttle nozzle 8 is greater than the pressure at its outlet. Thus, the device 100 generates a force axially. As the connecting rod 71 continuously rotates, the generation of the force will change periodically, so that the device 100 generates vibrations both axially and radially. In this way, the technical problems of high energy consumption of the oscillator and single direction of the oscillation force in the prior art can be solved.

[0066] According to a preferred embodiment of the present invention, as Figure 1Bearings 9 are respectively sleeved on the liquid inlet mechanism 6 and the connecting rod 71, and the bearings 9 are respectively abutted against the inner walls of the outer cylinder 2 and the lower joint 3. In this way, the bearings 9 can limit the liquid inlet mechanism 6 and the connecting rod 71, so that the liquid inlet mechanism 6 and the connecting rod 71 are stably arranged in the channel 4. At the same time, by arranging the bearings 9, the frictional force generated when the liquid inlet mechanism 6 and the connecting rod 71 rotate can also be reduced. In this embodiment, the bearing 9 arranged on the connecting rod 71 is located between the boss 712 and the receiving portion 33. In this way, the bearing 9 can be stably connected to the connecting rod 71.

[0067] According to a preferred embodiment of the present invention, as Figure 1 shown, the upper joint 1, the outer cylinder 2 and the lower joint 3 are sequentially connected together by threads. At the same time, the drive mechanism 5, the liquid inlet mechanism 6 and the connecting rod 71 are also connected to each other by threads.

[0068] The operation of the vibration damping device 100 according to the present invention is as follows.

[0069] First, the upper joint 1, the outer cylinder 2 and the lower joint 3 are connected to each other by threads, so that the upper joint 1, the outer cylinder 2 and the lower joint 3 jointly form a channel 4 for fluid movement. At the same time, the drive mechanism 5, the liquid inlet mechanism 6, the vibration mechanism 7 and the throttle nozzle 8 are sequentially connected together by threads, and bearings 9 are respectively arranged on the liquid inlet mechanism 6 and the vibration mechanism 7.

[0070] In addition, the drive mechanism 5, the liquid inlet mechanism 6, the vibration mechanism 7 and the throttle nozzle 8 connected together in sequence are arranged in the channel 4, and the bearing located on the vibration mechanism 7 is abutted against the receiving portion 33. Then, a coiled tubing or a drill pipe (not shown in the figure) for inputting fluid into the channel 4 is arranged on the upper joint 1, and a drill pipe or a heavy drill pipe (not shown in the figure) is arranged at the free end of the lower joint 3. Thus, the assembly of the device 100 is completed.

[0071] When it is necessary to make the device 100 generate axial and radial vibrations, fluid is input into the channel 4 through a coiled tubing or a drill pipe. At this time, the fluid will drive the drive mechanism 5 to rotate, and the drive mechanism 5 will drive the liquid inlet mechanism 6 and the connecting rod 71 to rotate together. At the same time, the fluid will also enter the liquid inlet mechanism 6 along the liquid inlet hole 61 and move along the liquid inlet mechanism 6 into the connecting rod 71.

[0072] During this process, the connecting rod 71 will drive the actuating portion 722 to move synchronously, and the actuating portion 722 will continuously apply a force to the blocking portion 721, so as to urge the blocking portion 721 to continuously reciprocate axially along the connecting rod 71.

[0073] At this time, the blocking part 721 can periodically open the radial channel jointly formed by the connecting rod 71, the first through hole 711 and the liquid outlet hole 31, so that the fluid located in the connecting rod 71 can periodically move from the radial channel to the outside.

[0074] Moreover, as the connecting rod 71 continuously rotates, the second through hole 713 located on the connecting rod 71 will correspond to the channel member 332, and the fluid located in the connecting rod 71 will move to the outside along the axial channel jointly formed between the second through hole 713 and the channel member 332. Thus, the fluid moves smoothly to the outside in the radial direction and the axial direction. At this time, the vibration mechanism 7 does not generate acting forces in the axial direction and the radial direction.

[0075] However, when the actuating part 722 blocks the first through hole 711 to minimize the flow area of the first through hole 711, the second through hole 713 will correspond to the seal 331, and the second through hole 713 will be blocked by the seal 331, so that the second through hole 713 is in a closed state. At this time, as the connecting rod 71 continuously rotates, the fluid located in the connecting rod 71 will radially eject outward from the first through hole 711. Thus, the device 100 generates an acting force in the radial direction.

[0076] Moreover, the fluid located in the connecting rod 71 will also continuously move downward along the connecting rod 71 and be discharged from the throttle nozzle 8 provided at the free end of the connecting rod 71. At this time, the pressure at the inlet of the throttle nozzle 8 is greater than the pressure at its outlet. Thus, the device 100 generates an acting force in the axial direction. As the connecting rod 71 continuously rotates, the generation of the acting force will change periodically, so that the device 100 generates vibrations in the axial direction and the radial direction. In this way, the technical problems of high energy consumption of the oscillator and single direction of the oscillating force in the prior art can be solved.

[0077] It can be understood that the present utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A vibration drag reduction device, characterized in that It includes an upper joint (1), an outer cylinder (2), and a lower joint (3) that are connected in sequence, and is used to jointly define a channel (4) for fluid movement. Among them, a driving mechanism (5), a liquid inlet mechanism (6) connected to the channel (4), and a vibration mechanism (7) are sequentially arranged in the channel (4). The driving mechanism (5) is configured to allow rotation when it comes into contact with the fluid. The liquid inlet mechanism (6) and the vibration mechanism (7) are interconnected and are configured to periodically generate radial and axial forces during the passage and rotation of the fluid.

2. The vibration drag reduction device according to claim 1, characterized in that, The vibration mechanism (7) includes a connecting rod (71) for communicating with the liquid inlet mechanism (6). The connecting rod (71) and the lower joint (3) are configured to jointly define a passage for the fluid to move radially outward. An opening component (72) for periodically opening the passage is also arranged on the connecting rod (71).

3. The vibration drag reduction device according to claim 2, wherein, The opening component (72) includes a blocking portion (721) sleeved on the connecting rod (71). The blocking portion (721) is configured to axially reciprocate along the path formed by the connecting rod (71) and periodically open the passage during the axial reciprocating movement.

4. The vibration drag reduction device according to claim 3, wherein The opening component (72) further includes an actuating portion (722) relatively fixed on the connecting rod (71). The actuating portion (722) is configured to periodically drive the blocking portion (721) to axially reciprocate along the path formed by the connecting rod (71) during the rotation of the connecting rod (71).

5. The vibration drag reduction device according to claim 4, characterized in that The blocking portion (721) includes a sleeve (7211) sleeved on the connecting rod (71) and a force-receiving portion (7212) arranged at the end of the sleeve (7211). The free end of the actuating portion (722) forms an eccentric portion (7221) along the axis eccentrically. The eccentric portion (7221) is arranged to cooperate with the force-receiving portion (7212) and periodically drive the blocking portion (721) to axially reciprocate along the path formed by the connecting rod (71) during the rotation of the eccentric portion (7221).

6. The vibration drag reduction device according to claim 5, characterized in that, A limiting groove (7213) is also arranged axially along the blocking portion (721), and a limiting portion (32) is also arranged on the lower joint (3). The limiting portion (32) extends into the limiting groove (7213) to define the space for the axial movement of the blocking portion (721).

7. The vibration drag reduction device according to claim 6, wherein A receiving portion (33) extending radially inward is also arranged on the inner wall of the lower joint (3). The receiving portion (33) is configured to periodically form a path for the axial movement of the fluid between the receiving portion (33) and the connecting rod (71) during the rotation of the connecting rod (71).

8. The vibration drag reduction device according to claim 7, characterized in that, A second through hole (713) is arranged on the connecting rod (71). The receiving portion (33) includes a sealing member (331) connected together for sealing the second through hole (713) and a channel member (332) for forming a path for the axial movement of the fluid with the second through hole (713).

9. The vibration drag reduction device according to claim 8, characterized in that, Between the second through hole (713) and the channel member (332), it is configured that when the fluid radially outward movement path is opened at the blocking portion (721), the second through hole (713) and the channel member (332) correspond to each other and form a path for the fluid to axially move.

10. The vibration drag reduction device according to claim 9, characterized in that, A throttle nozzle (8) is further provided at the free end of the connecting rod (71), and the throttle nozzle (8) is configured to be able to slow down the outflow speed of the fluid in the connecting rod (71).

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