CN112443272B - Underground drilling tool with self-locking and unlocking functions - Google Patents
Underground drilling tool with self-locking and unlocking functions Download PDFInfo
- Publication number
- CN112443272B CN112443272B CN202011402078.8A CN202011402078A CN112443272B CN 112443272 B CN112443272 B CN 112443272B CN 202011402078 A CN202011402078 A CN 202011402078A CN 112443272 B CN112443272 B CN 112443272B
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- shell
- clutch
- outer ring
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 238000009434 installation Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
Abstract
The application discloses a downhole drilling tool with a self-locking and unlocking function, and relates to the technical field of drilling, comprising a shell, a transmission shaft and a clutch, wherein the shell 1 and the clutch 3 are coaxially arranged, and the clutch is arranged between the shell and the transmission shaft; the clutch comprises an inner ring and an outer ring, wherein the outer ring is fixed with the shell through a positioning pin, the inner ring is fixedly connected with the transmission shaft through a key, the inner wall of the outer ring is provided with a mounting groove, and the depth of the mounting groove in the diameter direction is gradually increased along the rotation direction of the transmission shaft; the roller body is also arranged in the mounting groove, and a spring connected with the roller body is also arranged on the wall of the mounting groove. When the well bottom collapses and the drill bit is blocked, the application can rapidly unblock the drill bit, and can rapidly open the pump after unblocking the drill bit, resume normal drilling, and greatly improve the drilling efficiency.
Description
Technical Field
The application relates to the technical field of drilling, in particular to a downhole drilling tool with a self-locking and unlocking function.
Background
In the prior art, three underground power devices for petroleum drilling are respectively a screw drilling tool, a turbine drilling tool and an electric drilling tool; due to the improvement of the structure, the application of new materials and new technologies, the three underground drilling tools have respective advantages. The turbine drilling tool uses high-pressure drilling fluid as energy to drive a drill bit underground to complete drilling work; the screw drilling tool drives the rotor to rotate around the axis of the stator by enabling slurry pumped by the slurry pump to flow through the bypass valve to enter the motor, forming a certain pressure difference at the inlet and the outlet of the motor, and transmitting the rotating speed and the torque to the drill bit through the universal shaft and the transmission shaft, so that drilling operation is realized; the electric drilling tool drives the underground motor to provide drilling power for the drill bit through a cable, so that electric energy is directly converted into mechanical energy to drive the drill bit to rotate, and thus drilling work is completed.
However, the drill bit connected with the three drilling tools often has the condition that the drill bit is blocked due to the collapse or the falling of the block at the bottom of the well in the drilling process, and how to rapidly unblock the drill bit is the research direction of the current downhole tool; taking a screw drill as an example, the screw drill is usually used for transmitting rotary power by rotating the screw drill shell so as to unclamp a drill bit, but under the conventional condition, the motor consists of a rubber stator and a metal rotor, and the motor stator and the rotor can generate a slipping phenomenon by rotating the screw drill shell, so that not only is the rubber stator damaged, but also the rotary power can not be transmitted to the drill bit, the drill bit can not operate, and finally the drilling efficiency is influenced.
Disclosure of Invention
The application aims to provide a downhole drilling tool with a self-locking unlocking function, which can rapidly unlock a drill bit and rapidly pump after unlocking the drill bit, so that the drilling efficiency is greatly improved.
In order to achieve the aim of the application, the technical scheme adopted is as follows: the underground drilling tool with the self-locking and unlocking functions comprises a shell, a transmission shaft and a clutch, wherein the shell and the clutch are coaxially arranged, and the clutch is arranged between the shell and the transmission shaft; the clutch comprises an inner ring and an outer ring, the inner ring is fixed with the transmission shaft, the outer ring is fixed with the shell, the inner wall of the outer ring is provided with a mounting groove, and the depth of the mounting groove is gradually increased along the rotation direction of the transmission shaft; the roller body is also arranged in the mounting groove, and a spring connected with the roller body is also arranged on the wall of the mounting groove.
Furthermore, the spring is fixedly arranged on one side of the installation groove with the larger depth.
Further, the mounting grooves are multiple, the mounting grooves are uniformly distributed at intervals along the circumferential direction of the shell, and the roller bodies are arranged in the mounting grooves.
Further, the inner ring is connected with the transmission shaft through a key.
Further, a plurality of string bearings are further arranged between the shell and the transmission shaft, and the clutch is arranged between any two string bearings.
Further, the roller body is cylindrical, and the axial direction of the roller body is consistent with the axial direction of the transmission shaft.
Furthermore, the upper end of the transmission shaft is also provided with a universal shaft assembly and a motor assembly in sequence.
The beneficial effects of the application are as follows:
the inner wall of the outer ring is provided with a mounting groove, the depth of the mounting groove is set to be gradually increased along the clockwise direction, and a roller body is arranged in the mounting groove, so that the roller body is connected with the groove wall of the mounting groove through a spring, when a drill bit is blocked in the drilling process, a drill stem and a screw rod are driven through a turntable or a top drive to rotate positively, at the moment, the rotating speed of a transmission shaft is lower than that of an upper drilling tool, the outer ring is driven to rotate synchronously by a shell when the outer ring rotates, the roller body is driven to move towards the shallower end of the mounting groove under the action of spring thrust and friction force, the outer ring and the inner ring are relatively fixed, locking of the transmission shaft is realized, and the driving force of the upper drilling tool is transmitted to the drill bit, so that the drill bit is unblocked; after the unlocking, mud circulation can be reestablished, the pump can be quickly started, the rotation motion generated by the motor is transmitted to the transmission shaft, the rotation speed of the transmission shaft is higher than that of the upper drilling tool, and the roller body moves towards the deeper end of the mounting groove under the action of friction, so that the relative fixed relation between the inner ring and the outer ring is relieved, the drill bit is recovered to normally drill, and the drilling efficiency is greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.
FIG. 1 is a diagram of a downhole drilling tool with self-locking and unlocking functions;
FIG. 2 is a mounting block diagram of a clutch;
fig. 3 is a cross-sectional view of A-A in fig. 2.
The reference numerals and corresponding part names in the drawings:
1. the device comprises a shell, a transmission shaft, a clutch, a serial bearing, a universal shaft assembly, a motor assembly, a positioning pin, a spline and a positioning pin, wherein the shell, the transmission shaft, the clutch, the serial bearing, the universal shaft assembly, the motor assembly, the positioning pin and the spline are arranged in sequence, and the shell, the transmission shaft, the clutch, the serial bearing, the universal shaft assembly, the motor assembly, the positioning pin;
31. the inner ring, 32, the outer ring, 33, the mounting groove, 34, the roller body, 35 and the spring.
Detailed Description
The present application will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the application. It should be further noted that, for convenience of description, only the portions related to the present application are shown in the drawings.
In addition, the embodiments of the present application and the features of the embodiments may be combined with each other without collision. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, 2 and 3, the downhole drilling tool with the self-locking and unlocking functions provided by the application comprises a shell 1, a transmission shaft 2 and a clutch 3 which are coaxially arranged, wherein the clutch 3 is arranged between the inner wall of the shell 1 and the outer wall of the transmission shaft 2, and the shell 1 and the clutch 3 are coaxially arranged; the clutch 3 comprises an inner ring 31 and an outer ring 32, the inner ring 31 is fixedly connected with the transmission shaft 2 through splines, the number of the splines on the transmission shaft 2 is multiple, and the splines are uniformly distributed at intervals along the circumferential direction of the transmission shaft, so that the connection between the inner ring 31 and the transmission shaft 2 is more stable, the inner wall of the outer ring 32 is in clearance fit with the outer wall of the inner ring 31, and the inner ring 31 and the outer ring 32 can rotate relatively; the outer ring 32 is fixed with the outer shell 1, specifically, the outer ring 32 and the outer shell 1 can be fixed by interference fit or key connection or positioning pins, when the outer ring 32 and the outer shell 1 are fixed by key connection or positioning pins, the number of the positioning pins or the number of the positioning pins are multiple, and the positioning pins or the positioning pins are uniformly distributed at intervals along the circumferential direction of the outer ring 32, so that the outer ring 32 can synchronously rotate along with the outer shell 1 when the outer shell 1 rotates; the inner wall of the outer ring 32 is provided with a mounting groove 33, the depth of the mounting groove 33 is gradually increased along the rotation direction of the transmission shaft 2, namely, the groove bottom of the mounting groove 33 is an inclined plane, and the distance between the groove bottom of the mounting groove 33 and the outer wall of the inner ring 31 is gradually increased along with the transmission direction of the transmission shaft 2.
The roller body 34 is further installed in the installation groove 33, the diameter of the roller body 34 is larger than the minimum distance between the bottom of the installation groove 33 and the outer wall of the inner ring 31, the diameter of the roller body 34 is smaller than the maximum distance between the bottom of the installation groove 33 and the outer wall of the inner ring 31, when the roller body 34 enters into one end with smaller depth of the installation groove 33, the roller body 34 is clamped between the outer ring 32 and the inner ring 31, so that the outer ring 32 and the inner ring 31 can not rotate relatively, the transmission shaft 2 is driven by the shell 1 to rotate clockwise, torque of the transmission shaft 2 can be transmitted to a drill bit, braking stall is effectively prevented, unlocking of the drill bit is achieved, and therefore drilling efficiency can be rapidly increased.
The spring 35 connected with the roller body 34 is further installed on the wall of the installation groove 33, the spring 35 is fixedly installed on one side with larger depth of the installation groove 33, the spring 35 extends towards the rotating direction of the transmission shaft 2, one end of the spring 35 is fixed with the wall of the installation groove 33, the other end of the spring 35 is fixed with the roller body 34, the spring 35 can enable the roller body 34 to apply an acting force to pull the roller body 34 to move towards one end with larger depth of the installation groove 33 when the roller body 34 is clamped between the installation groove 33 and the inner ring 31, and when the shell 1 rotates under the condition that the inner ring 31 is clamped with the outer ring 32, the spring 35 also applies an acting force to pull the roller body 34 along with the rotation of the shell 1, so that the roller body 34 rapidly moves to one end with larger depth of the installation groove 33, and the unlocking between the shell 1 and the transmission shaft 2 is faster.
The number of the mounting grooves 33 is multiple, the plurality of the mounting grooves 33 are uniformly distributed at intervals along the circumferential direction of the shell 1, and the roller bodies 34 are arranged in the plurality of the mounting grooves 33, so that the central axis of the inner ring 31 is always consistent with the central axis of the outer ring 32 when the inner ring 31 rotates relative to the outer ring 32, the shaking of the transmission shaft 2 during rotation is reduced, and the drill bit is prevented from being injured during the drilling process; meanwhile, the plurality of roller bodies 34 are matched together, so that when the outer ring 32 and the inner ring 31 are clamped and locked, and the shell 1 is rotated, the force born by each roller body 34 is more uniform, and the inner ring 31 and the outer ring 32 are more rapid and convenient to unclamp.
The inner ring 31 is connected with the transmission shaft 2 through a key, namely, a spline is embedded on the transmission shaft 2, a key groove is formed in the inner wall of the inner ring 31, and the spline is clamped in the key groove, so that the transmission shaft 2 and the inner ring 31 are fixed; the spline embedded on the transmission shaft 2 can be a plurality of splines, and the plurality of splines are uniformly distributed at intervals along the circumferential direction of the transmission shaft 2, so that the inner ring 31 and the transmission shaft 2 are more firmly installed.
A plurality of serial bearings 4 are also arranged between the shell 1 and the transmission shaft 2, the serial bearings 4 are sleeved on the transmission shaft 2, and the serial bearings 4 are sequentially distributed along the axial direction of the transmission shaft 2; the clutch 3 is mounted between any two of the string bearings 4. The number of the clutches 3 in the present application may be plural, and when the number of the clutches 3 is plural, the plurality of clutches 3 may be arranged at intervals from the plurality of string bearings 4.
The roller body 34 is cylindrical, and the axial direction of the roller body 34 is consistent with the axial direction of the transmission shaft 2, so that the roller body 34 can conveniently roll in the mounting groove 33, when the inner ring 31 and the outer ring 32 are locked tightly, the roller body 34 is in line contact with the bottom of the mounting groove 33 and the outer wall of the inner ring 31, and the inner ring 31 and the outer ring 32 are more convenient when unlocked.
The upper end of the transmission shaft 2 is fixedly provided with a universal shaft assembly 5, the upper end of the universal shaft assembly 5 is connected with a motor assembly 6, and the drill bit is fixedly arranged at the lower end of the transmission shaft 2.
Under normal working conditions, the motor assembly 6 converts hydraulic energy of slurry into mechanical kinetic energy of rotation, the universal shaft assembly 5 transmits the rotational motion to the transmission shaft 2, the clutch 3 is in a separated state, the clutch 3 does not work, the inner ring 31 and the outer ring 32 generate relative rotational motion, the inner ring 31 and the transmission shaft 2 are relatively static, the transmission shaft 2 is in a normal working state, and the drill bit works normally.
When the bottom hole collapses or falls down, the drill bit can not rotate when meeting a clamp, the mud can not normally circulate, and the pump of the mud pump can not normally be started; through carousel or top drive forward drive drilling string and screw rod, transmission shaft 2 rotational speed is less than upper portion drilling tool this moment, and inner circle 31 is relative to outer lane 32 reverse motion, makes the roller body 34 enter into the less one end of mounting groove 33 degree of depth, makes clutch 3 automatic switch to the engagement state to drive transmission shaft 2 clockwise rotation, and transmission shaft 2 gives the drill bit with the moment of torsion, thereby realizes the unblock to the drill bit, can fast open the pump, makes drilling efficiency improve greatly.
The underground drilling tool with the self-locking unlocking function can be directly used in a screw drilling tool, a turbine drilling tool and an electric drilling tool, so that when a drill bit is jammed in the drilling process, the roller body 34 moves to one shallower end of the mounting groove 33, the outer ring 32 and the inner ring 31 are locked, the shell 1 drives the transmission shaft 2 to rotate clockwise, the unlocking of the drill bit is realized, the pump can be quickly started, and the drilling efficiency is greatly improved.
In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the application. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present application.
Claims (1)
1. A downhole drilling tool with a self-locking and unlocking function is characterized by comprising a shell (1), a transmission shaft (2) and a clutch (3), wherein the shell (1) and the clutch (3) are coaxially arranged, the clutch (3) is installed between the shell (1) and the transmission shaft (2), the clutch (3) comprises an inner ring (31) and an outer ring (32), the inner ring (31) is connected with the transmission shaft (2) through keys, the outer ring (32) is fixed with the shell (1), the inner wall of the outer ring (32) is provided with mounting grooves (33), the depth of the mounting grooves (33) is gradually increased along the rotation direction of the transmission shaft (2), the mounting grooves (33) are uniformly distributed at intervals along the circumferential direction of the shell (1), roller bodies (34) are installed in the plurality of the mounting grooves (33), the roller bodies (34) are cylindrical, the axial direction of the roller bodies (34) is consistent with the axial direction of the transmission shaft (2), the walls of the mounting grooves (33) are also provided with springs (35) connected with the roller bodies (34), the depth of the springs (35) is fixed between the mounting grooves (33) and one side of the shell (2), the clutch (3) is arranged between any two serial bearings (4); the upper end of the transmission shaft (2) is also provided with a universal shaft assembly (5) and a motor assembly (6) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011402078.8A CN112443272B (en) | 2020-12-04 | 2020-12-04 | Underground drilling tool with self-locking and unlocking functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011402078.8A CN112443272B (en) | 2020-12-04 | 2020-12-04 | Underground drilling tool with self-locking and unlocking functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112443272A CN112443272A (en) | 2021-03-05 |
| CN112443272B true CN112443272B (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011402078.8A Active CN112443272B (en) | 2020-12-04 | 2020-12-04 | Underground drilling tool with self-locking and unlocking functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112443272B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696227B (en) * | 2023-07-04 | 2024-01-05 | 德州联合石油科技股份有限公司 | Screw drill tool for releasing clamping |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2434605A (en) * | 2004-01-15 | 2007-08-01 | Pilot Drilling Control Ltd | Downhole freewheel |
| JP2008196633A (en) * | 2007-02-14 | 2008-08-28 | Ntn Corp | One-way clutch unit, and one-way clutch |
| CN101761318A (en) * | 2010-02-25 | 2010-06-30 | 中国石油化工股份有限公司 | Underground hydraulic pressure back-off device |
| CN201539519U (en) * | 2009-10-12 | 2010-08-04 | 王晓飞 | Split type cylindrical bearing clutch |
| CN104806657A (en) * | 2015-04-07 | 2015-07-29 | 武汉船用机械有限责任公司 | Overrun clutch and driving device |
| CN106555549A (en) * | 2015-09-30 | 2017-04-05 | 北京探矿工程研究所 | Friction ratchet wheel type anti-braking turbine drilling tool |
| CN111636815A (en) * | 2020-05-28 | 2020-09-08 | 中石化江钻石油机械有限公司 | Downhole power drilling tool with unfreezing device |
| CN213869695U (en) * | 2020-12-04 | 2021-08-03 | 四川深远石油钻井工具股份有限公司 | Downhole drilling tool with self-locking and unlocking functions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2410067B (en) * | 2004-01-15 | 2007-12-27 | Pilot Drilling Control Ltd | Freewheel |
-
2020
- 2020-12-04 CN CN202011402078.8A patent/CN112443272B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2434605A (en) * | 2004-01-15 | 2007-08-01 | Pilot Drilling Control Ltd | Downhole freewheel |
| JP2008196633A (en) * | 2007-02-14 | 2008-08-28 | Ntn Corp | One-way clutch unit, and one-way clutch |
| CN201539519U (en) * | 2009-10-12 | 2010-08-04 | 王晓飞 | Split type cylindrical bearing clutch |
| CN101761318A (en) * | 2010-02-25 | 2010-06-30 | 中国石油化工股份有限公司 | Underground hydraulic pressure back-off device |
| CN104806657A (en) * | 2015-04-07 | 2015-07-29 | 武汉船用机械有限责任公司 | Overrun clutch and driving device |
| CN106555549A (en) * | 2015-09-30 | 2017-04-05 | 北京探矿工程研究所 | Friction ratchet wheel type anti-braking turbine drilling tool |
| CN111636815A (en) * | 2020-05-28 | 2020-09-08 | 中石化江钻石油机械有限公司 | Downhole power drilling tool with unfreezing device |
| CN213869695U (en) * | 2020-12-04 | 2021-08-03 | 四川深远石油钻井工具股份有限公司 | Downhole drilling tool with self-locking and unlocking functions |
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| Publication number | Publication date |
|---|---|
| CN112443272A (en) | 2021-03-05 |
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