CN116104438B - Downhole hydraulic clutch device - Google Patents
Downhole hydraulic clutch device Download PDFInfo
- Publication number
- CN116104438B CN116104438B CN202111327853.2A CN202111327853A CN116104438B CN 116104438 B CN116104438 B CN 116104438B CN 202111327853 A CN202111327853 A CN 202111327853A CN 116104438 B CN116104438 B CN 116104438B
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- transmission
- clutch
- shaft
- transmission shaft
- drill bit
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of tools for oil and gas drilling, in particular to an underground hydraulic clutch device which comprises a transmission shaft with an axial flow channel, a clutch assembly and an outer cylinder, wherein the clutch assembly is sleeved on the outer side of the lower part of the transmission shaft. The invention has reasonable and compact structure, convenient use, and can directly transfer the power output by the screw drilling tool to the drill bit through the transmission shaft during normal operation, so that the drill bit can perform normal rock breaking operation, when the drill bit is clamped, the hydraulic pressure of the inlet in the cavity at the upper side of the piston is increased, the clutch shaft is pushed by the piston to further compress the pressure spring, the transmission convex teeth at the lower end of the clutch shaft are inserted into the corresponding transmission grooves on the outer ring platform, finally, the outer cylinder drives the transmission shaft to rotate together through the clutch shaft, the clamping state of the drill bit is broken, after the drill bit is restored to normal operation again, the hydraulic pressure of the inlet in the cavity at the upper side of the piston is reduced, and the clutch shaft is pushed by the spring to move back to the balance position under the action of the spring restoring force, so that the invention has the characteristics of safety, labor saving, simplicity and high efficiency.
Description
Technical Field
The invention relates to the technical field of tools for oil and gas drilling, in particular to an underground hydraulic clutch device.
Background
In the processes of petroleum and natural gas drilling, geological exploration and mine drilling, the application of the wells with complex structures such as directional wells, horizontal wells, highly-inclined wells, large-displacement wells and the like is more and more extensive, and higher requirements are put forward on the drilling technology. In the pilot drilling process, a sliding drilling system powered by a mud motor is mainly adopted in China to implement drilling operation, at the moment, the screw drilling tool drives the drill bit to drill in a rotating mode, the drill string does not rotate, but the power drilling tool and the drill bit can lie down at the bottom of a well due to the dead weight of the drill bit, so that frictional resistance is large, and the drill bit is difficult to apply drilling pressure effectively.
Disclosure of Invention
The invention provides an underground hydraulic clutch device, which overcomes the defects of the prior art, and can effectively solve the problems that the friction resistance is large, the effective application of the drilling pressure is difficult, and the drill is blocked due to insufficient torque because of the dead weight of a power drilling tool and a drill bit which lie in the bottom of a well in the drilling process of the existing directional well, the horizontal well, the highly-inclined well and the large-displacement well.
The technical scheme is that the underground hydraulic clutch device comprises a transmission shaft with an axial flow channel, a clutch assembly and an outer cylinder, wherein the clutch assembly is sleeved outside the lower part of the transmission shaft, the outer cylinder with the upper end positioned below the transmission shaft is connected to the outside of the clutch assembly in a transmission manner, the clutch assembly can move up and down relative to the outer cylinder, at least one internally and externally through pressure relief hole is formed in the transmission shaft corresponding to the position above the clutch assembly along the circumference, an outer ring table is arranged outside the lower end of the transmission shaft corresponding to the position below the outer cylinder, the lower end of the clutch assembly can be in transmission connection with the upper side of the outer ring table, and a drill bit connecting groove is formed inside the lower end of the transmission shaft.
The following are further optimizations and/or improvements to the above-described inventive solution:
The clutch assembly comprises a spring, a spring plug and a clutch shaft with an axial channel, wherein the clutch shaft is sleeved on the outer side of the lower part of the transmission shaft, a transmission ring table is arranged at the upper end of the clutch shaft, the outer side of the transmission ring table is in transmission connection with the inner side of the lower part of the outer cylinder, the transmission ring table can move up and down relative to the outer cylinder, the spring plug sleeved on the outer side of the clutch shaft is fixedly arranged on the inner side of the lower end of the outer cylinder, the spring is sleeved on the transmission shaft corresponding to the position between the upper side of the spring plug and the lower side of the transmission ring table, at least two transmission convex teeth are uniformly distributed on the lower end of the clutch shaft along the circumference, and transmission grooves with shapes matched with the transmission convex teeth are formed on the upper side of the outer ring table corresponding to the positions of each transmission convex tooth.
The outer side of the transmission ring table can be provided with an external spline, the inner side of the lower part of the outer cylinder can be provided with an internal spline meshed with the external spline, and the lower end of the external spline is positioned below the upper end of the internal spline.
The clutch assembly can further comprise a piston, and the upper end of the clutch shaft is fixedly provided with the piston sleeved on the outer side of the transmission shaft.
The clutch assembly can further comprise a first sealing ring and a second sealing ring, at least one first sealing ring is arranged between the piston and the outer cylinder at an upper-lower interval, and at least one second sealing ring is arranged between the piston and the transmission shaft at an upper-lower interval.
The clutch assembly can further comprise a filter screen, at least one communication hole which is internally and externally communicated is circumferentially arranged on the outer cylinder corresponding to the lower part of the clutch assembly, and the filter screen is fixedly arranged on the inner side of the outer end of each communication hole.
The outer cylinder can also comprise a conversion joint with an axial channel, and the inner side of the upper end of the outer cylinder is fixedly provided with the conversion joint sleeved on the upper part of the transmission shaft.
The invention has reasonable and compact structure, convenient use, and can directly transfer the power output by the screw drilling tool to the drill bit through the transmission shaft during normal operation, so that the drill bit can perform normal rock breaking operation, when the drill bit is jammed, the hydraulic pressure in the upper cavity of the piston is increased, the clutch shaft is pushed by the piston to further compress the pressure spring, further the transmission convex teeth at the lower end of the clutch shaft are inserted into the corresponding transmission grooves on the outer ring platform, finally the outer cylinder drives the transmission shaft to rotate together through the clutch shaft, the jammed state of the drill bit is broken, after the drill bit is restored to normal operation again, the hydraulic pressure in the upper cavity of the piston is reduced, the spring pushes the clutch shaft to move back to the balance position under the action of the spring restoring force, and when the torque of the drill bit is insufficient in the well, the torque is transferred to the drill bit through the outer cylinder, so that the jammed state is relieved, and when the drill bit is in normal operation state, the drill bit is driven to rotate through the transmission shaft, so that the friction resistance is reduced, and the torque loss is reduced.
Drawings
Fig. 1 is a schematic view of a cross-sectional front view of a preferred embodiment of the present invention.
Fig. 2 is a schematic perspective view of the transmission shaft in fig. 1.
Fig. 3 is a schematic perspective view of the outer cylinder of fig. 1.
Fig. 4 is an enlarged perspective view of the clutch shaft of fig. 1.
The coding in the drawing is that 1 is a transmission shaft, 2 is an outer cylinder, 3 is a pressure relief hole, 4 is an outer ring table, 5 is a spring, 6 is a spring plug, 7 is a clutch shaft, 8 is an external spline, 9 is an internal spline, 10 is a transmission convex tooth, 11 is a transmission groove, 12 is a piston, 13 is a filter screen, 14 is a communication hole, 15 is a conversion joint, 16 is a first sealing ring, 17 is a second sealing ring, and 18 is a drill bit connecting groove.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout form of fig. 1 of the specification, for example, the positional relationship of front, rear, upper, lower, left, right, etc. is determined according to the layout direction of the drawing of the specification.
The invention is further described below with reference to examples and figures:
As shown in fig. 1,2, 3 and 4, the downhole hydraulic clutch device comprises a transmission shaft 1 with an axial flow channel, a clutch component and an outer cylinder 2, wherein the clutch component is sleeved outside the lower part of the transmission shaft 1, the outer cylinder 2 with the upper end positioned below the transmission shaft 1 is connected to the outside transmission of the clutch component, the clutch component can move up and down relative to the outer cylinder 2, at least one internally and externally through pressure relief hole 3 is circumferentially formed in the transmission shaft 1 corresponding to the position above the clutch component, an outer ring table 4 is arranged outside the lower end of the transmission shaft 1 corresponding to the position below the outer cylinder 2, the lower end of the clutch component can be in transmission connection with the upper side of the outer ring table 4, and a drill bit connecting groove 18 is formed inside the lower end of the transmission shaft 1.
According to the requirement, in order to facilitate the connection of the transmission shaft 1 and the power output end of the screw drilling tool, the outer side of the upper end of the transmission shaft 1 is provided with threads; the inner side of the drill bit connecting groove 18 can be provided with threads for convenient disassembly and replacement of a drill bit, the transmission connection between the outer cylinder 2 and the clutch assembly can be square shaft transmission, hexagonal shaft transmission, guide flat key or spline transmission in the prior art, the transmission connection between the lower end of the clutch assembly and the outer ring table 4 can be friction clutch transmission, tooth-embedded clutch transmission or gear clutch transmission in the prior art, the clutch state between the lower end of the clutch assembly and the outer ring table 4 can be realized by applying drilling fluid with different pressures on the upper side and the lower side of the clutch assembly, when high-pressure drilling fluid is applied on the upper side of the clutch assembly, the clutch assembly moves downwards and is in transmission connection with the outer ring table 4, further, the outer cylinder 2 can apply additional torque to the transmission shaft 1, so that the transmission shaft 1 rotates along with the outer cylinder 2, when high-pressure drilling fluid is applied on the lower part of the clutch assembly, the clutch assembly is separated from the outer ring table 4, the transmission shaft 1 can only receive the torque directly transmitted by a screw drilling tool, the separation state between the lower end of the clutch assembly and the outer ring table 4 can also be realized by arranging an elastic part on the clutch assembly, then the clutch assembly is separated from the outer ring table 4 by the elastic part through the restoring force of the elastic part, and the separation between the clutch assembly and the outer ring table 4 is not normally influenced by the separation valve in order to realize the separation of the control assembly and the hydraulic separation operation.
In the use process, the upper end of the transmission shaft 1 and the power output shaft of the screw drilling tool can be fixedly installed together, and then the lower end of the transmission shaft 1 is connected with the upper end of the drill bit, so that the power output by the screw drilling tool can be directly transmitted to the drill bit, the drill bit can perform normal rock breaking operation, and at the moment, drilling fluid (low-pressure drilling fluid) can flow to the drill bit through an axial flow channel of the transmission shaft 1; the outer cylinder 2 and the shell of the screw drilling tool are fixedly arranged together, so that the outer cylinder 2 can drive the clutch assembly to synchronously rotate, drilling fluid (low-pressure drilling fluid) can flow into the outer cylinder 2 from the screw drilling tool, but at the moment, drilling fluid pressure and the elastic force of an elastic part on the clutch assembly are balanced, the clutch assembly is in a separated state with an outer ring table 4 on a transmission shaft 1 and cannot rotate together with the transmission shaft 1 and move up and down relative to the transmission shaft 1, when a drill bit is blocked and lagged, the drilling fluid pressure is firstly lifted from a wellhead (the drilling fluid pump pumps high-pressure drilling fluid) so as to increase the fluid pressure in a cavity on the upper side of the clutch assembly, the high-pressure drilling fluid can push the clutch assembly to compress the elastic part, then the lower end of the clutch assembly is in transmission connection with the upper side of the outer ring table 4, finally, the outer cylinder 2 drives the transmission shaft 1 to rotate together through the clutch assembly so as to relieve the blocking state of the drill bit, when the drill bit can work normally again, the pressure on the upper side of the clutch assembly is slowly lowered by the elastic part (the drilling fluid pump is adjusted back to a normal working state), the pressure on the clutch assembly is slowly pushed back to the balanced position by the elastic part through the restoring force, the upper side of the clutch assembly can be fed into the axial pressure relief channel 3 of the drilling fluid in the transmission shaft 1 through the transmission shaft, avoid because of holding down the pressure and cause the unable separation and reunion subassembly of resetting. The invention has reasonable and compact structure and convenient use, transmits torque to the drill bit through the outer cylinder 2 when the torque of the drill bit in the pit is insufficient so as to release the clamping state of the drill bit, and drives the drill bit to rotationally drill through the transmission shaft 1 in the normal working state, thereby having positive effects of reducing friction resistance, reducing torque loss and avoiding the pressure holding of a screw drilling tool.
The underground hydraulic clutch device can be further optimized or/and improved according to actual needs:
As shown in figures 1,2, 3 and 4, the clutch assembly comprises a spring 5, a spring plug 6 and a clutch shaft 7 with an axial channel, the clutch shaft 7 is sleeved on the outer side of the lower part of the transmission shaft 1, a transmission ring table is arranged at the upper end of the clutch shaft 7, the outer side of the transmission ring table is in transmission connection with the inner side of the lower part of the outer cylinder 2 and can move up and down relative to the outer cylinder 2, the spring plug 6 sleeved on the outer side of the clutch shaft 7 is fixedly arranged on the inner side of the lower end of the outer cylinder 2, the spring 5 is sleeved on the transmission shaft 1 corresponding to the position between the upper side of the spring plug 6 and the lower side of the transmission ring table, at least two transmission convex teeth 10 are uniformly distributed on the lower end of the clutch shaft 7 along the circumference, and transmission grooves 11 with shapes matched with the transmission convex teeth 10 are formed on the upper side of the outer ring table 4 corresponding to the position of each transmission convex tooth 10. According to the requirements, the transmission connection between the outer cylinder 2 and the transmission ring table can be square shaft transmission, hexagonal shaft transmission, guide flat key or spline transmission in the prior art, the spring 5 can be a compression spring, a combined compression spring or a disc spring combination in the prior art, the compression spring is used in the embodiment, the spring plug 6 is convenient to disassemble and assemble, the spring plug 6 and the outer cylinder 2 can be connected through threads, and a hexagonal or square wrench table can be arranged outside the lower end of the spring plug 6.
During the use, when the low-pressure drilling fluid is introduced into the cavity at the upper side of the clutch shaft 7, the low-pressure drilling fluid can downwards push the clutch shaft 7 to compress the spring 5, but at the moment, the pressure applied by the drilling fluid downwards is equal to the restoring force of the spring 5, so that the clutch shaft 7 is in a balanced state, and the transmission convex teeth 10 at the lower end of the clutch shaft and the transmission groove 11 at the upper side of the outer ring table 4 are in a separated state, when the high-pressure drilling fluid is introduced into the cavity at the upper side of the clutch shaft 7, the high-pressure drilling fluid can further push the clutch shaft 7 to compress the spring 5, finally the transmission convex teeth 10 are inserted into the corresponding transmission groove 11, so that the torque on the outer cylinder 2 is transmitted to the transmission shaft 1 and the drill bit through the clutch shaft 7, and then the drill bit breaks the clamping state, when the drill bit restores to normal work, and when the drill bit restores work, the pressure in the cavity at the upper side of the clutch shaft 7 is restored to a normal working state (low-pressure state), at the moment, the spring 5 upwards pushes the clutch shaft 7 to be separated from the outer ring table 4 under the action of the spring restoring force, the clutch shaft 7 can be further pushed in the upward in the process of upwards, the low-pressure drilling fluid can be compressed by the low-pressure compression fluid in the axial direction through the compression hole 3, and the drill bit can be restored to the drill bit to the balance after the drill bit is restored to the drilling well, and the drill bit is restored to the normal state.
As shown in figures 1,3 and 4, the outer side of the transmission ring table is provided with an external spline 8, the inner side of the lower part of the outer cylinder 2 is provided with an internal spline 9 meshed with the external spline 8, and the lower end of the external spline 8 is positioned below the upper end of the internal spline 9.
In the use, through the setting of external spline 8 and internal spline 9, both can make clutch shaft 7 and urceolus 2 synchronous rotation (i.e. transmit the torque on the urceolus 2 to clutch shaft 7), still can make clutch shaft 7 reciprocate for urceolus 2, and spline transmission has that the transmission is steady, bearing capacity is high, and is well to the centering, characteristics that the guidance quality is good.
As shown in fig. 1, the clutch assembly further comprises a piston 12, and the upper end of the clutch shaft 7 is fixedly provided with the piston 12 sleeved on the outer side of the transmission shaft 1. In addition, the piston 12 and the clutch shaft 7 are separately processed, so that the processing difficulty can be reduced, the processing procedures can be reduced, and the processing cost can be saved.
As shown in fig. 1, the clutch assembly further comprises a first sealing ring 16 and a second sealing ring 17, at least one first sealing ring 16 is arranged between the piston 12 and the outer cylinder 2 at an up-down interval, and at least one second sealing ring 17 is arranged between the piston 12 and the transmission shaft 1 at an up-down interval. Through the arrangement, when high-pressure drilling fluid flows into the cavity on the upper side of the piston 12, leakage of the high-pressure drilling fluid from a gap between the piston 12 and the outer cylinder 2 and the transmission shaft 1 can be reduced, and the working efficiency of the clutch assembly is improved.
As shown in figure 1, the clutch assembly further comprises a filter screen 13, at least one communication hole 14 which is internally and externally communicated is circumferentially arranged on the outer cylinder 2 corresponding to the lower part of the clutch assembly, and the filter screen 13 is fixedly arranged on the inner side of the outer end of each communication hole 14. According to the requirement, the fixing mode of the filter screen 13 and the outer barrel 2 can be welding, threaded connection or fixing through hole snap springs, in this embodiment, the filter screen mounting groove and the snap spring groove are arranged on the inner side of the outer end of each communication hole 14, then the filter screen 13 is fixed in the filter screen mounting groove through the hole snap springs 19, so that the cost of the filter screen 13 adopting the steel wire mesh in the prior art is mainly considered to be lower, and the hole snap springs 19 are convenient to assemble and disassemble or the purchasing cost of standard parts is low. When the clutch shaft 7 is pushed by the piston 12 to downwards compress the spring 5 in the use process, liquid in the cavity of the spring 5 can quickly flow out through the communication hole 14, the resistance for pushing the clutch shaft 7 is reduced, and the filter screen 13 can prevent large-particle impurities in the well from entering the spring cavity and prevent the large-particle impurities from interfering the normal work of the spring 5.
As shown in fig. 1, the device also comprises a conversion joint 15 with an axial passage, and the inner side of the upper end of the outer cylinder 2 is fixedly provided with the conversion joint 15 sleeved on the upper part of the transmission shaft 1. According to the requirement, a square hexagonal wrench table can be arranged on the outer side of the middle part of the adapter 15, so that the screw drilling tool can be conveniently connected with the screw drilling tool through a wrench, and the inner diameter of an axial channel of the adapter 15 is larger than the outer diameter of the transmission shaft 1, so that drilling fluid can flow into the outer barrel 2 through an annulus between the adapter 15 and the transmission shaft 1. Through the arrangement, the outer barrel 2 is conveniently and directly connected with the shell of the screw drilling tool through the adapter 15, so that the modification of the shell of the screw drilling tool is avoided, and the cost of other parts is further saved.
The technical characteristics form the optimal embodiment of the invention, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327853.2A CN116104438B (en) | 2021-11-10 | 2021-11-10 | Downhole hydraulic clutch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327853.2A CN116104438B (en) | 2021-11-10 | 2021-11-10 | Downhole hydraulic clutch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116104438A CN116104438A (en) | 2023-05-12 |
| CN116104438B true CN116104438B (en) | 2025-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111327853.2A Active CN116104438B (en) | 2021-11-10 | 2021-11-10 | Downhole hydraulic clutch device |
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| Country | Link |
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| CN (1) | CN116104438B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118167203B (en) * | 2024-03-29 | 2024-10-18 | 成都希能能源科技有限公司 | Mechanical rotary steering drilling tool |
| CN120350887B (en) * | 2025-06-23 | 2025-08-29 | 四川职业技术学院 | PDC drill bit assembly with self-drilling function and anti-sticking drill mechanism |
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| CN202531016U (en) * | 2012-04-12 | 2012-11-14 | 德州联合石油机械有限公司 | Rotary impact screw drill |
| CN104884728A (en) * | 2012-12-29 | 2015-09-02 | 哈利伯顿能源服务公司 | Downhole drilling assembly with hydraulically actuated clutch and method of use |
| CN106014288A (en) * | 2016-07-25 | 2016-10-12 | 东营市创元石油机械制造有限公司 | Remote-control variable diameter stabilizer for petroleum drilling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203239230U (en) * | 2013-01-30 | 2013-10-16 | 中国石油天然气集团公司 | Downhole jet flow auxiliary drilling speed increasing device |
| CN204511305U (en) * | 2015-01-20 | 2015-07-29 | 蒋卫东 | A kind of hydrothermal solution auxiliary impact drilling bit |
| CN109854177B (en) * | 2019-01-17 | 2020-09-29 | 西南石油大学 | Mechanically regulated multifunctional PDC drill |
| CN110965940B (en) * | 2019-12-24 | 2021-01-26 | 四川宝石机械石油钻头有限责任公司 | Automatic vertical drilling device |
| CN111636815B (en) * | 2020-05-28 | 2022-04-01 | 中石化江钻石油机械有限公司 | Downhole power drilling tool with unfreezing device |
| CN213980619U (en) * | 2020-11-25 | 2021-08-17 | 中石化江钻石油机械有限公司 | Screw drilling tool with ratchet mechanism |
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2021
- 2021-11-10 CN CN202111327853.2A patent/CN116104438B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202531016U (en) * | 2012-04-12 | 2012-11-14 | 德州联合石油机械有限公司 | Rotary impact screw drill |
| CN104884728A (en) * | 2012-12-29 | 2015-09-02 | 哈利伯顿能源服务公司 | Downhole drilling assembly with hydraulically actuated clutch and method of use |
| CN106014288A (en) * | 2016-07-25 | 2016-10-12 | 东营市创元石油机械制造有限公司 | Remote-control variable diameter stabilizer for petroleum drilling |
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| CN116104438A (en) | 2023-05-12 |
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