Coiled tubing drilling motor steering gear

Abstract

The present application relates to the field of drilling technology in oil and gas exploitation, and discloses a coiled tubing drilling motor steering device, which comprises a hollow central shaft and a driving assembly, a conversion assembly, a first clutch mechanism, a second clutch mechanism, a locking mechanism and a lower joint which are sequentially installed on the outside of the central shaft from top to bottom; the driving assembly can make the conversion assembly rotate on the outside of the central shaft after reciprocating up and down on the outside of the central shaft. The present application has a reasonable and compact structure, and can make the driving assembly reciprocate up and down on the outside of the central shaft after repeatedly pumping high-pressure and low-pressure mud into the driving assembly and the central shaft from the ground mud pump, finally make the lower joint rotate in the clockwise direction through the conversion assembly and the first clutch mechanism, so as to adjust the drilling trajectory, and lock the driving assembly through the locking mechanism, so that the driving assembly cannot reciprocate up and down, thereby stabilizing the angle of the tool string during the drilling process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling technology in oil and gas exploitation, and is a coiled tubing drilling motor diverter. BACKGROUND

[0002] At present, drilling and completion of horizontal wells is a method for greatly improving oil and gas production. Conventional horizontal well drilling is completed by using a drill pipe. The drill pipe has good rigidity, and when the motor and drill bit need to be oriented, the pipe string can be directly rotated. However, the coiled tubing is different. The coiled tubing is a flexible steel pipe without joint connection, and is a flexible pipe with a length of several hundred meters to about 7000 meters.

[0003] The coiled tubing can be sent into the well like the drill pipe, and can also be taken out of the well. In addition, the coiled tubing can be pumped into the well by the mud pump equipment on the ground to lubricate the drill bit and carry the rock cuttings. However, the coiled tubing cannot select the pipe string by itself to complete the orientation of the drill bit. Special tools are needed to complete the orientation action when drilling with the coiled tubing string. SUMMARY

[0004] The present application provides a coiled tubing drilling motor diverter, which overcomes the shortcomings of the prior art and effectively solves the problem of difficulty in completing the orientation of the drill bit in the existing coiled tubing.

[0005] The technical scheme of the present application is realized by the following measures: a coiled tubing drilling motor diverter, comprising a hollow center shaft and a driving assembly, a conversion assembly, a first clutch mechanism, a second clutch mechanism, a locking mechanism and a lower joint installed on the outside of the center shaft from top to bottom in sequence;

[0006] The driving assembly can make the conversion assembly rotate on the outside of the center shaft after reciprocating up and down on the outside of the center shaft;

[0007] The conversion assembly can make the lower joint rotate at a certain angle through the first clutch mechanism after rotating;

[0008] The second clutch mechanism plays a role of preventing the rotation of the outer gear cylinder of the conversion assembly;

[0009] The locking mechanism can make the driving assembly unable to reciprocate up and down after being actuated.

[0010] The following is a further optimization or / and improvement of the above-mentioned technical scheme of the application:

[0011] The driving assembly can include an upper joint, an upper mandrel, an upper piston cylinder, an upper piston rod, a lower piston cylinder, a lower piston rod, a first elastic return member and a second elastic return member, the upper joint is fixedly installed with the lower end inner side and the upper mandrel upper end outer side, the upper mandrel upper portion outer side is fixed with a first limiting ring table, the upper mandrel lower end is fixedly installed with the center shaft upper end, the upper piston cylinder is sleeved with the upper end below the upper joint, the upper piston cylinder lower end inner side is fixedly installed with the first connector upper end outer side which is sleeved with the upper mandrel outer side, the first connector lower end outer side is fixedly installed with the lower piston cylinder upper end inner side which is sleeved with the upper mandrel lower portion outer side, the first connector inner side and the upper mandrel outer side are sleeved with the upper piston rod which has the lower end below the first connector, the upper piston rod upper end is fixed with a second limiting ring table which is sleeved with the upper piston cylinder inner side and the upper mandrel outer side, the first elastic return member is arranged between the second limiting ring table upper end and the first limiting ring table lower end, the upper piston rod lower end outer side is fixedly installed with the lower piston rod upper end inner side, the lower piston rod lower end is installed with the conversion assembly upper portion, the lower piston rod upper end outer side is fixed with a third limiting ring table which is in sealing contact with the lower piston cylinder inner side, the second elastic return member is arranged between the third limiting ring table upper end and the first connector lower portion inner side, the upper piston cylinder upper portion outer side is circumferentially spaced with at least one first connecting hole which is in communication between the inner side and the outer side, the upper piston rod upper portion outer side is circumferentially spaced with at least one second connecting hole which is in communication between the inner side and the outer side, the lower piston cylinder upper portion outer side is circumferentially spaced with at least one third connecting hole which is in communication between the inner side and the outer side.

[0012] The conversion assembly can include a second connector, a spiral sleeve and a guide block, the lower piston cylinder lower end inner side is fixedly installed with the second connector upper end outer side which is coaxially sleeved with the lower piston rod outer side, the second connector lower end is installed with the first clutch mechanism outer portion upper end, the lower piston rod upper portion inner side is fixed with a fourth limiting ring table which corresponds to the lower piston rod lower end position, the center shaft upper end outer side and the upper mandrel lower end outer side are fixedly installed together which corresponds to the fourth limiting ring table lower end position, the center shaft upper portion outer side is circumferentially spaced with at least one spiral guide groove, the spiral sleeve is fixedly installed with the center shaft outer side, the spiral sleeve lower end is installed with the first clutch mechanism inner portion upper end, the guide block is fixed with the spiral sleeve lower end inner side which corresponds to each guide groove position, the guide block moves upward along the guide groove to drive the spiral sleeve to rotate in the clockwise direction.

[0013] The first clutch mechanism can include an outer gear cylinder, an upper flywheel shaft, an upper end cover, an upper rotating shaft, an upper pawl, and an upper torsional spring. The second connecting head lower outer side and the outer gear cylinder upper inner side are sealingly and fixedly installed together. The outer gear cylinder lower end is installed with the locking mechanism outer upper end. The outer gear cylinder inner side is circumferentially and uniformly distributed with a plurality of ratchet grooves. The screw sleeve lower end outer side and the coaxial sleeve installed between the center shaft outer side and the upper flywheel shaft upper end inner side are fixedly installed together. The upper flywheel shaft lower end is provided with the upper end cover sleeved on the center shaft outer side. The upper flywheel shaft lower end is circumferentially and uniformly distributed with a plurality of upper sliding grooves. Each upper sliding groove is provided with the upper rotating shaft rotatingly installed on the upper side of the upper end cover. The upper flywheel shaft outer side corresponding to the position of each upper sliding groove is provided with the upper swing groove communicated with the upper sliding groove. Each adjacent two upper sliding grooves are provided with the upper installation groove. Each upper installation groove is communicated with the corresponding upper swing groove. Each upper swing groove is installed with the upper pawl with the first end fixedly installed with the corresponding upper rotating shaft. Each upper installation groove is installed with the upper torsional spring, so that the second end of the upper pawl is meshed with the corresponding ratchet groove. In the clockwise direction, the second end of the upper pawl is located in front of the first end.

[0014] The second clutch mechanism can include a lower core shaft, a lower flywheel shaft, a lower end cover, a lower rotating shaft, a lower pawl, and a lower torsional spring. The center shaft outer side corresponding to the position below the upper end cover and the lower flywheel shaft upper inner side are sealingly and fixedly installed together. The lower flywheel shaft lower inner side corresponding to the position of the center shaft lower end is sealingly and fixedly installed with the lower core shaft. The fifth limiting ring table is fixedly installed on the lower core shaft upper outer side corresponding to the position below the lower flywheel shaft. The lower end cover is installed on the fifth limiting ring table upper end. The lower flywheel shaft lower end is circumferentially and uniformly distributed with a plurality of lower sliding grooves. Each lower sliding groove is provided with the lower rotating shaft rotatingly installed on the upper side of the lower end cover. The lower flywheel shaft outer side corresponding to the position of each lower sliding groove is provided with the lower swing groove communicated with the lower sliding groove. Each adjacent two lower sliding grooves are provided with the lower installation groove. Each lower installation groove is communicated with the corresponding lower swing groove. Each lower swing groove is installed with the lower pawl with the first end fixedly installed with the corresponding lower rotating shaft. Each lower installation groove is installed with the lower torsional spring, so that the second end of the lower pawl is meshed with the corresponding ratchet groove. In the clockwise direction, the second end of the lower pawl is located in front of the first end. The lower core shaft lower end is installed with the locking mechanism upper end.

[0015] The locking mechanism can include a third connector, a transposition ring and a transposition column, the outer gear cylinder lower end inner side is fixedly installed with the third connector upper end outer side, the third connector lower end and the lower connector upper end are fixedly installed together, the third connector middle part outer side is fixed with the sixth limiting ring table in sealing contact with the lower core shaft lower part outer side, the outer gear cylinder lower part inner side corresponding to the position below the ratchet tooth groove is provided with an installation ring groove, the transposition ring is installed in the installation ring groove and sleeved on the lower core shaft outer side, the lower core shaft outer side corresponding to the position between the fifth limiting ring table and the sixth limiting ring table is provided with a groove type rotation guide track, the transposition ring outer side is uniformly distributed with at least one inner-outer communication installation hole along the circumference, the transposition column is fixedly installed in the installation hole and located in the corresponding position of the groove type rotation guide track, when the transposition column moves in the groove type rotation guide track, the sixth limiting ring table can move up and down, and the lower core shaft lower end outer side corresponding to the position between the sixth limiting ring table and the transposition ring is uniformly distributed with at least one inner-outer communication fourth connecting hole along the circumference.

[0016] When the transposition column moves in the groove type rotation guide track, the angle of rotation of the transposition column is the same as the angle of rotation of the helical sleeve in the clockwise direction when the guide block moves upward along the guide groove, and both are between 10 and 60 degrees.

[0017] The first limiting ring table upper end can be provided with a guide sleeve fixedly installed with the upper piston cylinder inner side at the lower end outer side.

[0018] At least one buffer pad can be installed between the guide sleeve lower end and the first limiting ring table upper end.

[0019] The structure is reasonable and compact, high-pressure and low-pressure mud is repeatedly pumped into the driving assembly and the central shaft on the ground, so that the pressure difference is formed inside and outside the driving assembly, and the central shaft moves up and down on the outside, finally the lower connector rotates in the clockwise direction through the conversion assembly and the first clutch mechanism, the drilling trajectory can be adjusted, the driving assembly is locked by the locking mechanism, so that the driving assembly cannot move up and down, so that the tool string has the stability of the angle in the drilling process. BRIEF DESCRIPTION OF DRAWINGS

[0020] The upper part of the embodiment one is a schematic view of the main view structure. Figure 1

[0021] The middle part of the embodiment one is a schematic view of the main view structure. Figure 2

[0022] The lower part of the embodiment is a schematic view of the main view structure. Figure 3

[0023] The upper part of the embodiment one is a schematic view of the main view structure. Figure 4 The upper part of the embodiment one is a schematic view of the main view structure. Figure 3 ​​​A cross-sectional view of the structure at A-A is shown in the enlarged view.

[0024] The Figure 5 The Figure 3 A cross-sectional view of the structure at B-B is shown in the enlarged view.

[0025] The codes in the drawings are as follows: 1 is a central shaft, 2 is a lower joint, 3 is an upper joint, 4 is an upper mandrel, 5 is an upper piston cylinder, 6 is an upper piston rod, 7 is a lower piston cylinder, 8 is a lower piston rod, 9 is a first elastic reset member, 10 is a second elastic reset member, 11 is a first limiting ring table, 12 is a first connecting head, 13 is a second limiting ring table, 14 is a third limiting ring table, 15 is a first connecting hole, 16 is a second connecting hole, 17 is a third connecting hole, 18 is a second connecting head, 19 is a spiral sleeve, 20 is a guide block, 21 is a fourth limiting ring table, 22 is a guide groove, 23 is an outer gear cylinder, 24 is an upper flywheel shaft, 25 is an upper end cover, 26 is an upper rotating shaft, 27 is an upper pawl, 28 is an upper torsional spring, 29 is a ratchet groove, 30 is an upper swing groove, 31 is a lower mandrel, 32 is a lower flywheel shaft, 33 is a lower end cover, 34 is a lower rotating shaft, 35 is a lower pawl, 36 is a lower torsional spring, 37 is a fifth limiting ring table, 38 is a lower swing groove, 39 is a third connecting head, 40 is a transposition ring, 41 is a transposition column, 42 is a sixth limiting ring table, 43 is a recessed rotary guide rail, 44 is a fourth connecting hole, 45 is a guide sleeve, and 46 is a buffer pad. DETAILED DESCRIPTION

[0026] The present application is not limited by the following examples, and the specific implementation can be determined according to the technical solutions of the present application and the actual situation.

[0027] In the present application, the relative position relationship of each component is described according to the layout of the drawings in the specification, such as: front, back, up, down, left, right, etc. The position relationship is determined according to the layout direction of the drawings in the specification. Figure 1

[0028] The present application will be further described below in conjunction with examples and drawings:

[0029] Example 1: as shown in the drawings, the coiled tubing drilling motor steering gear comprises a hollow central shaft 1 and a driving assembly, a conversion assembly, a first clutch mechanism, a second clutch mechanism, a locking mechanism and a lower joint 2 installed on the outer side of the central shaft 1 from top to bottom. Figures 1 to 5 The driving assembly can make the conversion assembly rotate on the outer side of the central shaft 1 after reciprocating up and down on the outer side of the central shaft 1.

[0030] The conversion assembly can make the lower joint 2 rotate at a certain angle through the first clutch mechanism after rotating.

[0031] ​​

[0032] The second clutch mechanism plays a role of anti-rotation for the outer gear cylinder of the conversion assembly;

[0033] The locking mechanism can make the driving assembly unable to move up and down after the locking mechanism is actuated.

[0034] In use, the tool string is installed on the lower joint 2, such as a non-magnetic drill collar and its MDW instrument, a motor and its drill bit tool string, the upper end of the central shaft 1 is communicated with the outlet of the ground mud pump, and the high-pressure and low-pressure mud is repeatedly pumped into the driving assembly and the central shaft 1 through the ground mud pump, so that the pressure difference is formed inside and outside the driving assembly, and the driving assembly moves up and down outside the central shaft 1, and finally the lower joint 2 is rotated in the clockwise direction through the conversion assembly and the first clutch mechanism, so that the tool string installed on the lower joint 2 is rotated according to the set angle, the rotation angle of the tool string can be adjusted according to the oil reservoir trend, so as to adjust the drilling trajectory, and after the rotation angle of the tool string is adjusted, the driving assembly is locked through the locking mechanism, so that the driving assembly cannot move up and down, so that the stability of the angle of the tool string in the drilling process is ensured, the structure of the present application is reasonable and compact, the operation is simple, the use is flexible and convenient, and the adjustment efficiency of the existing drilling process can be improved.

[0035] The coiled tubing drilling motor steering device can be further optimized or / and improved according to actual needs:

[0036] Embodiment two: as an optimization of the above-mentioned embodiments, as shown in the attached Figure 1 , 2As shown, the drive assembly comprises an upper joint 3, an upper mandrel 4, an upper piston barrel 5, an upper piston rod 6, a lower piston barrel 7, a lower piston rod 8, a first elastic return member 9 and a second elastic return member 10, the lower end inner side of the upper joint 3 and the upper end outer side of the upper mandrel 4 are sealingly and fixedly installed together, the upper portion outer side of the upper mandrel 4 is fixed with a first limiting ring table 11, the lower end of the upper mandrel 4 is sealingly and fixedly installed with the upper end of the central shaft 1, the outer side of the first limiting ring table 11 is sleeved with the upper piston barrel 5 whose upper end is below the lower end of the upper joint 3, the lower end inner side of the upper piston barrel 5 and the outer side of the first connecting head 12 sleeved with the upper mandrel 4 are sealingly and fixedly installed together, the outer side of the lower end of the first connecting head 12 and the inner side of the upper end of the lower piston barrel 7 sleeved with the lower portion outer side of the upper mandrel 4 are fixedly installed together, the first connecting head 12 is sleeved with the upper piston rod 6 whose lower end is below the lower end of the first connecting head 12 between the inner side of the first connecting head 12 and the outer side of the upper mandrel 4, the upper end of the upper piston rod 6 is fixed with the second limiting ring table 13 sealingly sleeved with the inner side of the upper piston barrel 5 and the outer side of the upper mandrel 4, the first elastic return member 9 is arranged between the upper end of the second limiting ring table 13 and the lower end of the first limiting ring table 11, the outer side of the lower end of the upper piston rod 6 and the inner side of the upper end of the lower piston rod 8 are sealingly and fixedly installed together, the lower end of the lower piston rod 8 is installed with the upper portion of the conversion assembly, the outer side of the upper end of the lower piston rod 8 is fixed with the third limiting ring table 14 sealingly contacted with the inner side of the lower piston barrel 7, the second elastic return member 10 is arranged between the upper end of the third limiting ring table 14 and the inner side of the lower portion of the first connecting head 12, at least one first connecting hole 15 in communication between the inner side and the outer side is circumferentially and interval distributed on the upper portion outer side of the upper piston barrel 5 corresponding to the position between the first limiting ring table 11 and the second limiting ring table 13, at least one second connecting hole 16 in communication between the inner side and the outer side is circumferentially and interval distributed on the upper portion outer side of the upper piston rod 6 corresponding to the position below the second limiting ring table 13, at least one third connecting hole 17 in communication between the inner side and the outer side is circumferentially and interval distributed on the upper portion outer side of the lower piston barrel 7 corresponding to the position between the first connecting head 12 and the third limiting ring table 14.

[0037] According to the requirements, the first elastic return member 9 and the second elastic return member 10 are existing well-known technologies, such as compression springs, which are in sealing contact with the outer side of the upper piston rod 6 and the inner side of the first connector 12 at the position below the second connecting hole 16. During use, by setting the third connecting hole 17, after the drive assembly is lowered into the well, the fluid enters the upper joint 3 and flows into the center shaft 1 after passing through the upper core shaft 4. The fluid flows upward through the connection gap between the center shaft 1 and the locking mechanism and flows into the lower end of the third limit ring platform 14 facing the third limit ring platform 14, so that the upper end of the third limit ring platform 14 compresses the second elastic return member 10, and the lower piston rod 8 moves upward. At the same time, the fluid passes through the connection gap between the center shaft 1 and the locking mechanism and flows into the lower end of the second limit ring platform 12 through the second connecting hole 16 and acts on the second limit ring platform 13, so that the upper end of the second limit ring platform 13 compresses the first elastic return member 9, and the upper piston rod 6 moves upward. When the fluid pressure is reduced, the first elastic return member 9 and the second elastic return member 10 make the upper The piston rod 6 and the lower piston rod 8 move downward at the same time. After the upper piston rod 6 and the lower piston rod 8 move back and forth up and down on the outside of the upper core shaft 4, they can drive the conversion assembly to rotate on the outside of the central axis 1, thereby driving the motor installed on the lower joint 2 to rotate. In this way, the bending direction of the motor can be adjusted, and finally the drilling direction of the drill bit can be adjusted. By setting the first connecting hole 15 and the third connecting hole 17, the pressure in the mounting ring cavity of the first elastic return member 9 and the second elastic return member 10 can be avoided when the upper piston rod 6 and the lower piston rod 8 move upward. When the upper piston rod 6 and the lower piston rod 8 move upward, the fluid or gas at the upper end of the second limit ring platform 13 and the upper end of the third limit ring platform 14 can be quickly discharged to the outside of the piston cylinder, so that the upper piston rod 6 and the lower piston rod 8 can move up and down more smoothly.

[0038] Example 3: As an optimization of the above embodiment, as shown in the attached Figure 1 、 2 As shown in Figure 3, the conversion assembly includes a second connecting head 18, a spiral sleeve 19 and a guide block 20. The inner side of the lower end of the lower piston cylinder 7 is sealed and fixed with the outer side of the upper end of the second connecting head 18 coaxially sleeved on the outer side of the lower piston rod 8. The lower end of the second connecting head 18 is installed together with the outer upper end of the first clutch mechanism. A fourth limiting ring platform 21 is fixed to the inner side of the upper part of the lower piston rod 8 corresponding to the lower end position of the upper piston rod 6. The outer side of the upper end of the central shaft 1 and the outer side of the lower end of the upper core shaft 4 are sealed and fixed together corresponding to the lower end position of the fourth limiting ring platform 21. At least one spiral guide groove 22 is evenly distributed along the circumference of the upper outer side of the central shaft 1. The outer side of the lower end of the lower piston rod 8 is fixed with a spiral sleeve 19 sleeved on the outer side of the central shaft 1. The lower end of the spiral sleeve 19 is installed together with the inner upper end of the first clutch mechanism. A guide block 20 is fixed to the inner side of the lower end of the spiral sleeve 19 corresponding to each guide groove 22. When the guide block 20 moves upward along the guide groove 22, the spiral sleeve 19 is driven to rotate in a clockwise direction.

[0039] In use, through such a setting, after the driving assembly is lowered into the well, the fluid in the upper joint 3 flows into the central shaft 1 after passing through the upper mandrel 4, and the fluid flows upward through the connecting gap between the central shaft 1 and the locking mechanism to the lower end surface of the third limiting ring table 14 to act on the third limiting ring table 14, so that the upper end of the third limiting ring table 14 compresses the second elastic reset member 10, the lower piston rod 8 moves upward, and at the same time, the fluid flows through the connecting gap between the central shaft 1 and the locking mechanism and flows into the lower end surface of the second limiting ring table 13 through the second connecting hole 16 to act on the second limiting ring table 13, so that the upper end of the second limiting ring table 13 compresses the first elastic reset member 9, the upper piston rod 6 moves upward, and when the upper piston rod 6 and the lower piston rod 8 move upward at the same time, the helical sleeve 19 can be driven to move upward, and when the helical sleeve 19 moves upward, the guide block 20 moves along the guide groove 22, and when the guide block 20 moves from bottom to top in the helical guide groove 22, the helical sleeve 19 rotates in the clockwise direction, thereby driving the locking mechanism and the lower joint 2 to rotate in the clockwise direction, and thereby driving the motor installed on the lower joint 2 to rotate in the clockwise direction.

[0040] When the fluid pressure decreases, the first elastic reset member 9 and the second elastic reset member 10 make the upper piston rod 6 and the lower piston rod 8 move downward at the same time, and when the upper piston rod 6 and the lower piston rod 8 move downward at the same time, the helical sleeve 19 can be driven to move downward, and when the helical sleeve 19 moves downward, the guide block 20 moves along the guide groove 22, and the guide block 20 moves from top to bottom in the helical guide groove 22.

[0041] Example Four: As an optimization of the above-mentioned embodiments, as shown in the accompanying drawings Figure 1 、 2The first clutch mechanism includes an outer gear cylinder 23, an upper flywheel shaft 24, an upper end cover 25, an upper rotating shaft 26, an upper pawl 27, and an upper torsion spring 28. The lower outer side of the second connecting head 18 and the upper inner side of the outer gear cylinder 23 are sealingly and fixedly installed together. The lower end of the outer gear cylinder 23 is installed with the outer upper end of the locking mechanism. The inner side of the outer gear cylinder 23 is circumferentially and uniformly distributed with a plurality of ratchet grooves 29. The lower end of the spiral sleeve 19 is fixedly installed with the upper end of the upper flywheel shaft 24 between the outer side of the central shaft 1 and the inner side of the outer gear cylinder 23. The lower end of the upper flywheel shaft 24 is provided with the upper end cover 25 sleeved on the outer side of the central shaft 1. The lower end of the upper flywheel shaft 24 is circumferentially and uniformly distributed with a plurality of upper sliding grooves. Each upper sliding groove is provided with the upper rotating shaft 26 rotatably installed on the upper side of the upper end cover 25. The outer side of the upper flywheel shaft 24 corresponding to the position of each upper sliding groove is provided with the upper swing groove 30 communicated with the upper sliding groove. Each adjacent two upper sliding grooves are provided with an upper installation groove. Each upper installation groove is communicated with the corresponding upper swing groove 30. Each upper swing groove 30 is installed with the upper pawl 27 having the first end fixedly installed with the corresponding upper rotating shaft 26. Each upper installation groove is installed with the upper torsion spring 28, so that the second end of the upper pawl 27 is engaged with the corresponding ratchet groove 29. In the clockwise direction, the second end of the upper pawl 27 is located in front of the first end.

[0042] In use, through such a setting, when the upper piston rod 6 and the lower piston rod 8 move upward at the same time, the spiral sleeve 19 can be driven to move upward. When the spiral sleeve 19 moves upward, the guide block 20 is driven to move along the guide groove 22. When the guide block 20 moves from bottom to top in the spiral guide groove 22, the spiral sleeve 19 is driven to rotate in the clockwise direction while moving upward, thereby driving the upper flywheel shaft 24 to move upward while rotating in the clockwise direction. When the upper flywheel shaft 24 rotates in the clockwise direction, the upper rotating shaft 26 is driven to rotate in the clockwise direction. When the upper rotating shaft 26 rotates in the clockwise direction, the upper pawl 27 drives the outer gear cylinder 23 to rotate in the clockwise direction, thereby driving the locking mechanism and the lower connector 2 to rotate in the clockwise direction, so as to drive the motor installed on the lower connector 2 to rotate in the clockwise direction.

[0043] When the upper piston rod 6 and the lower piston rod 8 move downward at the same time, the helical sleeve 19 can be driven to move downward, and the helical sleeve 19 drives the guide block 20 to move along the guide groove 22 when the helical sleeve 19 moves downward, and the guide block 20 drives the helical sleeve 19 to rotate in the counterclockwise direction and move downward when the guide block 20 moves from top to bottom in the helical guide groove 22, so that the upper flywheel shaft 24 moves downward and rotates in the counterclockwise direction, and the second clutch mechanism can prevent the outer tooth cylinder 23 from rotating, so that the ratchet groove 29 of the outer tooth cylinder 23 presses the upper pawl 27, and the second end of the upper pawl 27 swings in the swing groove 30, and the second end of the upper pawl 27 swings into the next ratchet groove 29, and the upper torsional spring 28 drives the second end of the upper ratchet to engage with the corresponding ratchet groove 29.

[0044] In this way, the ground circulating pump reciprocates in the upper joint 3 to start the pump and pressurize and stop the pump and depressurize, so that the upper piston rod 6 and the lower piston rod 8 reciprocate up and down, and finally the motor installed on the lower joint 2 rotates in one direction.

[0045] Example five: as an optimization of the above-mentioned embodiments, as shown in the accompanying drawings Figures 1 to 5 The second clutch mechanism includes a lower mandrel 31, a lower flywheel shaft 32, a lower end cover 33, a lower rotating shaft 34, a lower pawl 35, and a lower torsional spring 36, which are fixed and installed together on the outside of the central shaft 1 below the position of the upper end cover 25 and the inside of the lower flywheel shaft 32 above the position. The lower flywheel shaft 32 is fixed and installed with the lower mandrel 31 on the inside of the lower flywheel shaft 32 below the position of the central shaft 1, and the fifth limiting ring table 37 is fixed on the upper outside of the lower mandrel 31 below the position of the lower flywheel shaft 32. The lower end cover 33 is installed on the upper end of the fifth limiting ring table 37, and the lower flywheel shaft 32 is provided with a plurality of lower sliding grooves at the lower end along the circumference, and each lower sliding groove is provided with a lower rotating shaft 34 rotatably installed on the upper side of the lower end cover 33. The lower flywheel shaft 32 is provided with a lower swing groove 38 communicated with the lower sliding groove at the position of each lower sliding groove, and a lower installation groove is provided between each adjacent two lower sliding grooves, and each lower installation groove is communicated with the corresponding lower swing groove 38. Each lower swing groove 38 is installed with a lower pawl 35 fixed with the corresponding lower rotating shaft 34 at the first end, and each lower installation groove is installed with a lower torsional spring 36 to engage the second end of the lower pawl 35 with the corresponding ratchet groove 29. The second end of the lower pawl 35 is located in front of the first end in the clockwise direction, and the lower end of the lower mandrel 31 is installed with the upper end of the locking mechanism.

[0046] In use, through such a setting, when the upper piston rod 6 and the lower piston rod 8 move upward at the same time, the helical sleeve 19 can be driven to move upward, the helical sleeve 19 drives the guide block 20 to move along the guide groove 22 when moving upward, the guide block 20 drives the helical sleeve 19 to rotate in the clockwise direction and move upward when moving from the lower part to the upper part in the helical guide groove 22, thereby driving the upper flywheel shaft 24 to move upward and rotate in the clockwise direction, the upper flywheel shaft 24 drives the upper rotating shaft 26 to rotate in the clockwise direction when rotating in the clockwise direction, the upper ratchet 27 drives the outer gear cylinder 23 to rotate in the clockwise direction when the upper rotating shaft 26 rotates in the clockwise direction, the outer gear cylinder 23 is pressed to make the second end of the lower ratchet 35 swing into the lower swing groove 38 when rotating in the clockwise direction because the lower flywheel shaft 32 is fixed through the central shaft 1, the upper mandrel 4 and the upper joint 3.

[0047] When the upper piston rod 6 and the lower piston rod 8 move downward at the same time, the helical sleeve 19 can be driven to move downward, the helical sleeve 19 drives the guide block 20 to move along the guide groove 22 when moving downward, the guide block 20 drives the helical sleeve 19 to rotate in the counterclockwise direction and move downward when moving from the upper part to the lower part in the helical guide groove 22, thereby driving the upper flywheel shaft 24 to move downward and rotate in the counterclockwise direction, the upper flywheel shaft 24 drives the lower ratchet 35 to mesh with the ratchet groove 29 under the action of the lower torsional spring 36 when rotating in the counterclockwise direction because the lower flywheel shaft 32 is fixed through the central shaft 1, the upper mandrel 4 and the upper joint 3, so that the lower ratchet 35 can avoid the outer gear cylinder 23 to rotate in the counterclockwise direction, at this time, the ratchet groove 29 of the outer gear cylinder 23 is pressed to make the second end of the upper ratchet 27 swing into the upward swing groove 30, and when the second end of the upper ratchet 27 swings into the next ratchet groove 29, the upper torsional spring 28 acts to make the second end of the upper ratchet and the corresponding ratchet groove 29 mesh with each other.

[0048] In this way, the ground circulating pump reciprocates in the upper joint 3 to realize the pump starting and pressure increasing and the pump stopping and pressure releasing, so that the upper piston rod 6 and the lower piston rod 8 move upward and downward, and finally the motor installed on the lower joint 2 rotates in one direction.

[0049] Example six: as an optimization of the above-mentioned examples, as shown in the attached Figure 3As shown, the locking mechanism includes a third connecting head 39, a transposition ring 40 and a transposition column 41, the lower end of the outer tooth barrel 23 is fixedly installed with the upper end of the third connecting head 39, the lower end of the third connecting head 39 is fixedly installed with the upper end of the lower connector, the outer side of the middle part of the third connecting head 39 is fixedly installed with the sixth limiting ring table 42 which is in sealing contact with the outer side of the lower part of the lower core shaft 31, the lower part of the outer tooth barrel 23 corresponding to the position below the ratchet groove 29 is provided with a mounting ring groove, the transposition ring 40 sleeved on the outer side of the lower core shaft 31 is mounted in the mounting ring groove, the outer side of the lower core shaft 31 corresponding to the position between the fifth limiting ring table 37 and the sixth limiting ring table 42 is provided with a groove type rotary guide rail 43, at least one mounting hole in communication between the inside and the outside is uniformly distributed on the outer side of the transposition ring 40 along the circumference, the transposition column 41 whose end part is located in the corresponding position of the groove type rotary guide rail 43 is fixedly installed in the mounting hole, the transposition column 41 can make the sixth limiting ring table 42 move up and down when moving in the groove type rotary guide rail 43, and at least one fourth connecting hole 44 in communication between the inside and the outside is uniformly distributed on the outer side of the lower end of the lower core shaft 31 along the circumference corresponding to the position between the sixth limiting ring table 42 and the transposition ring 40.

[0050] According to the needs, the rack groove is a known technology, such as the groove type rotary guide rail in the positive and negative circulation inner blowout prevention device with publication number CN211058759U. In the use process, through such a setting, when it is necessary to adjust the direction of the motor installed on the lower connector 2, the pressure of the fluid in the upper connector 3 is increased, the high-pressure fluid flows into the lower end of the third limiting ring table 14 through the fourth connecting hole 44 to act on the third limiting ring table 14, so that the upper end of the third limiting ring table 14 compresses the second elastic reset member 10, the lower piston rod 8 moves upward, at the same time, the fluid flows through the gap between the central shaft 1 and the outer tooth barrel 23 and flows into the lower end of the second limiting ring table 13 through the second connecting hole 16 to act on the second limiting ring table 13, so that the upper end of the second limiting ring table 13 compresses the first elastic reset member 9, the upper piston rod 6 moves upward, finally, the third connecting head 39 moves upward and rotates in the clockwise direction, when the third connecting head 39 moves upward, the transposition ring 40 is pushed to move upward, when the transposition ring 40 moves upward, the transposition column 41 is driven to move upward and rotate in the groove type rotary guide rail 43.

[0051] Example seven: as an optimization of the above-mentioned examples, as shown in the accompanying drawings Figures 1 to 5 As shown, the angle of rotation of the transposition column 41 when moving in the groove type rotary guide rail 43 and the angle of rotation of the screw sleeve 19 driven by the guide block 20 when moving upward along the guide groove 22 are the same, both of which are between 10 to 60 degrees.

[0052] As required, the angle of rotation of the transposition post 41 when moving within the grooved rotary guide track 43 is the same as the angle of clockwise rotation of the spiral sleeve 19 caused by the guide block 20 moving upward along the guide groove 22, both being 30 degrees. During use, this arrangement allows the rotation angle of the lower joint 2 to be controlled by the internal and external pressure differential, facilitating control of the rotation direction of the motor mounted on the lower joint 2.

[0053] Example 8: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, the upper end of the first limiting ring 11 is provided with a guide sleeve 45 whose lower end outer side is fixedly installed with the inner side of the upper piston cylinder 5, and the upper end outer side of the guide sleeve 45 is sleeved on the lower outer side of the upper joint 3.

[0054] During use, such a setting can prevent the upper piston cylinder 5 from colliding with the upper joint 3 when moving upward, and can also protect the first limiting ring 11, thereby reducing the maintenance cost of the upper core shaft 4 and the upper piston cylinder 5.

[0055] Example 9: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, at least one buffer pad 46 is installed between the lower end of the guide sleeve 45 and the upper end of the first limiting ring 11. If required, the buffer pad 46 is made of copper. During use, this arrangement can reduce wear between the guide sleeve 45 and the upper end of the first limiting ring 11, reducing maintenance costs.

[0056] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. A coiled tubing drilling motor swivel, characterized by: The hollow central shaft and the driving assembly, the conversion assembly, the first clutch mechanism, the second clutch mechanism, the locking mechanism and the lower joint are sequentially installed on the outside of the central shaft from top to bottom; The driving assembly can make the conversion assembly rotate on the outside of the central shaft after reciprocating up and down on the outside of the central shaft; The conversion assembly can make the lower joint rotate at a certain angle through the first clutch mechanism after rotating; The second clutch mechanism plays a role of preventing the outer gear cylinder of the conversion assembly from rotating back; The locking mechanism can make the driving assembly unable to reciprocate up and down after acting; The driving assembly includes an upper joint, an upper mandrel, an upper piston cylinder, an upper piston rod, a lower piston cylinder, a lower piston rod, a first elastic reset member and a second elastic reset member, the lower end of the upper joint and the upper end of the upper mandrel are sealingly and fixedly installed together, the upper end of the upper mandrel is fixedly provided with a first limiting ring table on the outside of the upper mandrel, the lower end of the upper mandrel is sealingly and fixedly installed with the upper end of the central shaft, the upper piston cylinder is sleeved on the outside of the upper mandrel with the upper end below the upper joint, the lower end of the upper piston cylinder is sealingly and fixedly installed with the upper end of the first connecting head which is sealingly sleeved on the outside of the upper mandrel, the lower end of the first connecting head is fixedly installed with the upper end of the lower piston cylinder which is sleeved on the outside of the lower part of the upper mandrel, the upper end of the first connecting head is fixedly provided with a second limiting ring table which is sealingly sleeved on the inside of the upper piston cylinder and the outside of the upper mandrel, the first elastic reset member is arranged between the upper end of the second limiting ring table and the lower end of the first limiting ring table, the lower end of the upper piston rod is sealingly and fixedly installed with the upper end of the lower piston rod, the lower end of the lower piston rod is installed with the upper part of the conversion assembly, the upper end of the lower piston rod is fixedly provided with a third limiting ring table which is sealingly contacted with the inside of the lower piston cylinder, the second elastic reset member is arranged between the upper end of the third limiting ring table and the inside of the lower part of the first connecting head, at least one first connecting hole which is in communication between the inside and the outside is distributed on the outside of the upper part of the upper piston cylinder at intervals along the circumference, corresponding to the position between the first limiting ring table and the second limiting ring table, at least one second connecting hole which is in communication between the inside and the outside is distributed on the outside of the upper part of the upper piston rod at intervals along the circumference, corresponding to the position below the second limiting ring table, and at least one third connecting hole which is in communication between the inside and the outside is distributed on the outside of the upper part of the lower piston cylinder at intervals along the circumference, corresponding to the position between the first connecting head and the third limiting ring table. The conversion assembly comprises a second connector, a spiral sleeve and a guide block, the lower piston cylinder lower end inner side is fixedly installed with the second connector upper end outer side which is coaxially sleeved on the lower piston rod outer side, the second connector lower end is installed with the first clutch mechanism outer part upper end, the lower piston rod upper part inner side corresponding to the upper piston rod lower end position is fixed with a fourth limiting ring table, the central shaft upper end outer side corresponding to the fourth limiting ring table lower end position and the upper mandrel lower end outer side are fixedly installed together, the central shaft upper part outer side is circumferentially spaced and uniformly distributed with at least one spiral guide groove, the lower piston rod lower end outer side is fixedly installed with the spiral sleeve sleeved on the central shaft outer side, the spiral sleeve lower end is installed with the first clutch mechanism inner part upper end, the spiral sleeve lower end inner side corresponding to the position of each guide groove is fixed with a guide block, and the guide block moves upward along the guide groove to drive the spiral sleeve to rotate in the clockwise direction; The first clutch mechanism comprises an outer gear cylinder, an upper flywheel shaft, an upper end cover, an upper rotating shaft, an upper pawl and an upper torsional spring, the second connector lower part outer side and the outer gear cylinder upper part inner side are fixedly installed together, the outer gear cylinder lower end is installed with the locking mechanism outer part upper end, the outer gear cylinder inner side is circumferentially distributed with a plurality of ratchet grooves, the spiral sleeve lower end outer side and the upper flywheel shaft upper end inner side which is coaxially sleeved on the central shaft outer side and the outer gear cylinder inner side are fixedly installed together, the upper flywheel shaft lower end is provided with the upper end cover sleeved on the central shaft outer side, the upper flywheel shaft lower end is circumferentially spaced and uniformly distributed with a plurality of upper sliding grooves, each upper sliding groove is provided with the upper rotating shaft which is rotatably installed on the upper side of the upper end cover, the upper flywheel shaft outer side corresponding to the position of each upper sliding groove is provided with the upper swing groove which is communicated with the upper sliding groove, each adjacent two upper sliding grooves are provided with the upper installation groove, each upper installation groove is communicated with the corresponding upper swing groove, each upper swing groove is installed with the upper pawl whose first end is fixed with the corresponding upper rotating shaft, each upper installation groove is installed with the upper torsional spring which enables the second end of the upper pawl to be engaged with the corresponding ratchet groove, and in the clockwise direction, the second end of the upper pawl is located in front of the first end. The second clutch mechanism comprises a lower mandrel, a lower flywheel shaft, a lower end cover, a lower rotating shaft, a lower pawl and a lower torsional spring. The outer side of the central shaft below the upper end cover and the inner side of the lower flywheel shaft above are fixedly installed together. The lower mandrel is fixedly installed on the inner side of the lower flywheel shaft below the lower end of the central shaft. The fifth limiting ring table is fixed on the upper outer side of the lower mandrel below the lower flywheel shaft. The lower end cover is installed on the upper end of the fifth limiting ring table. The lower flywheel shaft is evenly distributed with a plurality of lower sliding grooves along the circumference at the lower end. Each lower sliding groove is provided with a lower rotating shaft rotatably installed on the upper side of the lower end cover. The outer side of the lower flywheel shaft below each lower sliding groove is provided with a lower swing groove in communication with the lower sliding groove. Each adjacent two lower sliding grooves are provided with a lower installation groove. Each lower installation groove is in communication with the corresponding lower swing groove. Each lower swing groove is installed with a lower pawl with the first end fixed to the corresponding lower rotating shaft. Each lower installation groove is installed with a lower torsional spring so that the second end of the lower pawl is engaged with the corresponding pawl groove. In the clockwise direction, the second end of the lower pawl is in front of the first end. The lower end of the lower mandrel is installed with the upper end of the locking mechanism. The locking mechanism comprises a third connecting head, a transposition ring and a transposition column. The inner side of the lower end of the outer gear cylinder is fixedly installed with the outer side of the upper end of the third connecting head. The lower end of the third connecting head is fixedly installed with the upper end of the lower connector. The outer side of the middle of the third connecting head is fixed with the sixth limiting ring table in sealing contact with the outer side of the lower part of the lower mandrel. The lower part of the outer gear cylinder below the pawl groove is provided with an installation ring groove. The installation ring groove is installed with a transposition ring sleeved on the outer side of the lower mandrel. The outer side of the transposition ring is evenly distributed with at least one installation hole in communication with the inside and outside along the circumference. The installation hole is fixedly installed with a transposition column with the end located in the corresponding position of the recess type rotary guide rail. When the transposition column moves in the recess type rotary guide rail, the sixth limiting ring table can move up and down. The lower end of the lower mandrel between the sixth limiting ring table and the transposition ring is evenly distributed with at least one fourth connecting hole in communication with the inside and outside along the circumference.

2. The coiled tubing drilling motor diverter of claim 1, wherein: When the transposition column moves in the recess type rotary guide rail, the angle of rotation is the same as the angle of rotation of the screw sleeve in the clockwise direction driven by the guide block moving upward along the guide groove, which is between 10 to 60 degrees.

3. The coiled tubing drilling motor diverter of claims 1 or 2, wherein: The upper end of the first limiting ring table is provided with a guide sleeve fixedly installed with the inner side of the upper piston cylinder on the outer side of the lower end. The upper end of the guide sleeve is sleeved on the outer side of the lower part of the upper connector.

4. The coiled tubing drilling motor diverter of claim 3, wherein: At least one buffer pad is installed between the lower end of the guide sleeve and the upper end of the first limiting ring table.

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