CN105649561B - A kind of coiled tubing tractor - Google Patents
A kind of coiled tubing tractor Download PDFInfo
- Publication number
- CN105649561B CN105649561B CN201610135288.2A CN201610135288A CN105649561B CN 105649561 B CN105649561 B CN 105649561B CN 201610135288 A CN201610135288 A CN 201610135288A CN 105649561 B CN105649561 B CN 105649561B
- Authority
- CN
- China
- Prior art keywords
- central siphon
- shell
- rotation central
- coiled tubing
- bullet
- 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.)
- Expired - Fee Related
Links
- 230000033001 locomotion Effects 0.000 abstract description 12
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of coiled tubing tractor, belong to oil gas field downhole tool technical field.The tractor includes rotation central siphon, shell, screw rod shell, screw drive axle, bullet and voussoir, it is characterised in that：The rotary shaft pipe end head thread being set with rotation central siphon in shell, shell is provided with screw drive axle；It is equipped with screw drive axle on screw rod shell, the rotation central siphon of screw rod shell side and motor joint is housed, connected with outer casing is housed on the rotation central siphon of motor joint side.The retractor structures are simple, novel in design, using drilling mud as power in the course of work, drive rotation central siphon to rotate by screw rod, then drive coiled tubing to creep forward by the relative motion between bullet and rotary shaft；So as to realize the traction work of coiled tubing, it is larger to solve existing tractor underground frictional resistance, tripping in and takes out the problem of difficult, the pressure of the drill is difficult to apply；Traction coiled tubing in the operations such as well workover and completion is particularly suitable for use in use.
Description
Technical field
The present invention relates to a kind of coiled tubing tractor, belong to oil gas field downhole tool technical field.
Background technology
Crude oil price drops in the middle and later periods eighties, world wide, forces domestic and international operation company and service company to be studied
The new method of drilling cost can be reduced with use, along with the raising of coiled tubing q＆r, coiled tubing is in well workover
Sharply increased with the application in the operation such as completion, and achieve obvious economic benefit and social benefit.
Downhole tractor is underground crawl device, is also underground climbing mechanism, underground tractor, downhole tractor device people, well
Lower hydraulic thruster, downhole drill bit propeller etc., be it is a kind of can shaft bottom provide tractive force downhole tool.Downhole tractor is pressed
Its motion principle can be divided into roller creeping-type, crawler belt creeping-type（Track-mounted）With grab arm rest telescopic slide formula（Step-by-step movement）3 kinds,
Wherein wheeled to occur earliest, telescopic to take second place, crawler type is the latest.Traction crawl device can be divided into CT formulas, cable by its energy source
Formula and hybrid 3 kinds.For the country, foreign countries all take strict technical know-how measure, cause the country to downhole tractor
Research also in ground zero stage.Current domestic existing tractor has poor structural reliability mostly due to design reasons,
Underground frictional resistance is larger, tripping in and takes out difficult, the pressure of the drill and the defect such as is difficult to apply, therefore, it is necessary to research and develop it is a kind of simple in construction, can
Effective solution underground frictional resistance is larger, tripping in and the tractor that taking-up is difficult, the pressure of the drill is difficult to the technical barriers such as application.
The content of the invention
It is an object of the invention to：There is provided a kind of simple in construction, it is larger effectively to solve underground frictional resistance, tripping in and take out tired
Difficult, the pressure of the drill is difficult to apply the coiled tubing tractor of problem.
The technical scheme is that：
A kind of coiled tubing tractor, including rotation central siphon, shell, screw rod shell, screw drive axle, bullet and wedge
Block, it is characterised in that：Shell is set with rotation central siphon, shell one end is provided with end cap, the rotation of end cap side by screw
Stop nut A is provided with central siphon,
Rotary shaft pipe end head thread in shell is provided with screw drive axle；Screw rod shell, spiral shell are housed on screw drive axle
It is equipped with motor joint, the rotation central siphon of motor joint side and is provided with by thrust bearing on the rotation central siphon of bar shell side
Connected with outer casing, fixation is bolted between connected with outer casing and motor joint；Stop nut B is provided with connected with outer casing, is limited
Position nut B contacts connection with shell；Bullet is movably installed with rotation central siphon on the inside of end cap, shell corresponding with bullet
It is evenly equipped with circumference in multiple fixing holes, fixing hole and voussoir is installed, voussoir is slidably connected with bullet.
Shape corresponding with rotary pin shaft on rotary pin shaft, bullet is installed on described rotation central siphon and is provided with cam rail
Groove, bullet is slidably connected by the cooperation of rotary pin shaft and cam rail groove with rotation central siphon.
Turning set is installed on described rotary pin shaft.
Wedge groove is axially evenly equipped with described bullet, voussoir is slidably connected by wedge groove with bullet.
Spacing shoulder is provided with the rotation central siphon of described thrust bearing side；The rotation central siphon of thrust bearing opposite side
On be provided with discharge orifice.
Described screw rod shell is connected with motor joint screw thread.
Described connected with outer casing is connected with shell key.
The beneficial effects of the present invention are：
The coiled tubing retractor structures are simple, novel in design, using drilling mud as power in the course of work, pass through screw rod
Rotation central siphon rotation is driven, then drives coiled tubing to creep forward by the relative motion between bullet and rotary shaft；So as to
The traction work of coiled tubing is realized, it is larger to efficiently solve existing tractor underground frictional resistance, tripping in and to take out difficult, the pressure of the drill difficult
The problem of applying；Traction coiled tubing in the operations such as well workover and completion is particularly suitable for use in use.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is mplifying structure schematic diagram at Fig. 1 A；
Fig. 3 is the expanded schematic diagram of the cam rail groove of the present invention；
Motion schematic diagrames of the Fig. 4 for rotary pin shaft of the invention in cam rail groove；
Fig. 5 is the rotary pin shaft of the present invention and the axial connection diagram of cam rail groove；
Fig. 6 is the structural representation of the bullet of the present invention；
Fig. 7 is the cross section structure schematic diagram of the bullet of the present invention.
In figure：1st, central siphon is rotated, 2, shell, 3, screw rod shell, 4, screw drive axle, 5, bullet, 6, voussoir, 7, end
Lid, 8, stop nut A, 9, motor joint, 10, thrust bearing, 11, connected with outer casing, 12, bolt, 14, spacing shoulder, 15, let out
Discharge orifice, 16, rotary pin shaft, 17, cam rail groove, 18, wedge groove, 19, turning set.
Embodiment
The coiled tubing tractor includes rotation central siphon 1, shell 2, screw rod shell 3, screw drive axle 4, bullet 5 and wedge
Block 6.Shell 2 is set with rotation central siphon 1, the one end of shell 2 is provided with end cap 7, the rotation central siphon 1 of the side of end cap 7 by screw
On be provided with stop nut A8.
The ends screw of rotation central siphon 1 in shell 2 is provided with screw drive axle 4；Screw rod shell is housed on screw drive axle 4
3, motor joint 9 is housed, screw rod shell 3 is threadedly coupled with motor joint 9 on the rotation central siphon 1 of the side of screw rod shell 3.
Connected with outer casing 11 is provided with by thrust bearing 10 on the rotation central siphon 1 of the side of motor joint 9, connected with outer casing 11 with
It is connected, is connected between connected with outer casing 11 and shell 2 for key by bolt 12 between motor joint 9；Set on connected with outer casing 11
Stop nut B is equipped with, stop nut B contacts connection with shell 2；Limited location is set on the rotation central siphon 1 of the side of thrust bearing 10
Shoulder 14；Discharge orifice 15 is provided with the rotation central siphon 1 of the opposite side of thrust bearing 10.
Rotary pin shaft 16 is installed on the rotation central siphon 1 of the inner side of end cap 3；Rotate on central siphon 1 by the activity of rotary pin shaft 16
It is provided with bullet 5, bullet 5 and the corresponding shape of rotary pin shaft 16 is provided with cam rail groove 17, bullet 5 passes through rotating dog
The cooperation of axle 16 and cam rail groove 17 is slidably connected with rotation central siphon 1.It is evenly equipped with the circumference of shell 2 corresponding with bullet 5
It is provided with multiple fixing holes, fixing hole on voussoir 6, bullet 5 and is axially evenly equipped with wedge groove 18, voussoir 6 passes through wedge groove 18
It is slidably connected with bullet 5.
Turning set 19 is installed on the coiled tubing tractor rotary pin shaft 16；To increase rotary pin shaft 16 and cam rail
Slide coefficient between groove 17.
Using drilling mud as power during coiled tubing tractor work, rotation central siphon 1 is driven to revolve by screw drive axle 4
Turn, by the coiled tubing quality connected behind screw rod shell 3 is big so that the only band of rotary pin shaft 16 on rotation central siphon 1
Mantle body 5 rotates, when bullet 5 is moved to the left on rotating shaft pipe 1, progressively promotes voussoir 6 to extend radially out by wedge groove 18,
So as to compress the borehole wall.Rotate central siphon 1 to continue to rotate, because voussoir 6 compresses the borehole wall, bullet 5 is immovable by active force, rotation
Rotating shaft pipe 1 and the formation relative motion of bullet 5, so that rotation central siphon 1 is moved forward, thus act on lower band in connected with outer casing 11
Dynamic coiled tubing moves right, and realizes coiled tubing distraction procedure to the right.After coiled tubing reaches traction maximum distance, cam
Reversely, bullet 5 moves right on rotating shaft pipe 1 for the relative motion of rail groove 17 and rotary pin shaft 16, voussoir 6 now with
The movement of bullet 5 progressively radially bounces back, and voussoir 6 departs from the borehole wall, returns original state.
The coiled tubing tractor is by voussoir 6, and continuous oil is realized in the relative motion between bullet 5 and rotation central siphon 1
The traction work of pipe, to ensure that rotation central siphon 1 does not pull screw drive axle 4 at work, using devising motor joint 9 and spiral shell
Bar shell 3 is threadedly coupled, and motor joint 9 is connected with connected with outer casing 11 by bolt 12, and shoulder 14 is set on rotation central siphon 1 and is pacified
Dress thrust bearing 10 bears the mode of axial force；So that axial force transmission is to connected with outer casing 11, then is delivered to screw rod shell, make
Screw drive axle 4 is not by excessive axial force.
The similar oval annular groove of cam rail groove 17 on the coiled tubing tractor bullet 5（Referring to Fig. 2）, it is in cone
Body 5 has certain angle of inclination, during work, and the leading portion of cam rail groove 17 can make bullet 5 relative on rotation central siphon 1
Move right, the second half section part of cam rail groove 17 can make bullet 5 relative to left movement on rotation central siphon 1.Bullet 5
The radial motion of voussoir 6 can be promoted in motion process.And connected between shell 2 and connected with outer casing 11 by spline, shell 2 can
It is axially moveable, but is limited by stop nut.
The coiled tubing retractor structures are simple and reliable, and it is larger to solve existing tractor underground frictional resistance, tripping in and taking-up
The problem of difficult, the pressure of the drill is difficult to apply；The coiled tubing tractor is due to for Purely mechanical, without cable and control unit
Point so that instrument not easy break-down, reliability is greatly improved, and coiled tubing can be enable to extend longer in underground.
Claims (7)
1. a kind of coiled tubing tractor, including rotation central siphon（1）, shell（2）, screw rod shell（3）, screw drive axle（4）, cone
Body（5）And voussoir（6）, it is characterised in that：Rotate central siphon（1）On be set with shell（2）, shell（2）Pacified by screw one end
Equipped with end cap（7）, end cap（7）The rotation central siphon of side（1）On be provided with stop nut A（8）, shell（2）Interior rotation central siphon
（1）Ends screw is provided with screw drive axle（4）；Screw drive axle（4）It is upper that screw rod shell is housed（3）, screw rod shell（3）Side
Rotation central siphon（1）It is upper that motor joint is housed（9）, motor joint（9）The rotation central siphon of side（1）It is upper to pass through thrust bearing（10）
Connected with outer casing is installed（11）, connected with outer casing（11）With motor joint（9）Between pass through bolt（12）It is connected；Connected with outer casing
（11）On be provided with stop nut B, stop nut B and shell（2）Contact connection；End cap（7）The rotation central siphon of inner side（1）Upper work
It is dynamic that bullet is installed（5）, with bullet（5）Corresponding shell（2）It is evenly equipped with multiple fixing holes, fixing hole and installs on circumference
There is voussoir（6）, voussoir（6）With bullet（5）It is slidably connected.
2. a kind of coiled tubing tractor according to claim 1, it is characterised in that：Described rotation central siphon（1）Upper peace
Equipped with rotary pin shaft（16）, bullet（5）Upper and rotary pin shaft（16）Correspondence shape is provided with cam rail groove（17）, bullet
（5）Pass through rotary pin shaft（16）With cam rail groove（17）Cooperation with rotation central siphon（1）It is slidably connected.
3. a kind of coiled tubing tractor according to claim 2, it is characterised in that：Described rotary pin shaft（16）Upper peace
Equipped with turning set（19）.
4. a kind of coiled tubing tractor according to claim 1, it is characterised in that：Described bullet（5）Upper axial direction
It is evenly equipped with wedge groove（18）, voussoir（6）Pass through wedge groove（18）With bullet（5）It is slidably connected.
5. a kind of coiled tubing tractor according to claim 1, it is characterised in that：Described thrust bearing（10）Side
Rotation central siphon（1）On be provided with spacing shoulder（14）；Thrust bearing（10）The rotation central siphon of opposite side（1）On be provided with aerial drainage
Hole（15）.
6. a kind of coiled tubing tractor according to claim 1, it is characterised in that：Described screw rod shell（3）With horse
Up to joint（9）Threaded connection.
7. a kind of coiled tubing tractor according to claim 1, it is characterised in that：Described connected with outer casing（11）With it is outer
Shell（2）Key is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135288.2A CN105649561B (en) | 2016-03-10 | 2016-03-10 | A kind of coiled tubing tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135288.2A CN105649561B (en) | 2016-03-10 | 2016-03-10 | A kind of coiled tubing tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105649561A CN105649561A (en) | 2016-06-08 |
| CN105649561B true CN105649561B (en) | 2017-10-17 |
Family
ID=56493366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610135288.2A Expired - Fee Related CN105649561B (en) | 2016-03-10 | 2016-03-10 | A kind of coiled tubing tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105649561B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703729A (en) * | 2016-12-30 | 2017-05-24 | 中国人民解放军国防科学技术大学 | Hydraulic control method and system of downhole tractor |
| CN106677732A (en) * | 2016-12-30 | 2017-05-17 | 中国人民解放军国防科学技术大学 | All-hydraulic petroleum downhole traction device |
| CN107605418B (en) * | 2017-10-27 | 2019-06-04 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing waterpower traction crawl device |
| CN107859495B (en) * | 2017-12-22 | 2023-06-30 | 长江大学 | Telescopic underground tractor |
| CN108931345B (en) * | 2018-09-10 | 2020-08-28 | 陈朝晖 | Suppress leak hunting device |
| CN111852358B (en) * | 2020-08-25 | 2024-03-19 | 重庆科技学院 | Multi-branch yield-increasing drilling Cheng Pahang tool |
| CN112855056B (en) * | 2021-01-07 | 2022-09-23 | 河南理工大学 | Automatic dismounting equipment and dismounting method for magnetic buckle type supporting sleeve of underground coiled tubing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5794703A (en) * | 1996-07-03 | 1998-08-18 | Ctes, L.C. | Wellbore tractor and method of moving an item through a wellbore |
| CN102777145A (en) * | 2012-08-16 | 2012-11-14 | 中国石油大学(北京) | Electric control fluid drive coiled tubing downhole retractor |
| CN103114839A (en) * | 2011-11-16 | 2013-05-22 | 长江大学 | One-way transmission type retractor used under horizontal well |
| CN204344030U (en) * | 2014-12-19 | 2015-05-20 | 中国石油大学(华东) | Legged continuous-tube drilling tractor |
| CN105332667A (en) * | 2015-11-26 | 2016-02-17 | 长江大学 | Coiled tubing tractor |
| CN205370484U (en) * | 2016-03-10 | 2016-07-06 | 长江大学 | Coiled tubing tractor |
-
2016
- 2016-03-10 CN CN201610135288.2A patent/CN105649561B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5794703A (en) * | 1996-07-03 | 1998-08-18 | Ctes, L.C. | Wellbore tractor and method of moving an item through a wellbore |
| CN103114839A (en) * | 2011-11-16 | 2013-05-22 | 长江大学 | One-way transmission type retractor used under horizontal well |
| CN102777145A (en) * | 2012-08-16 | 2012-11-14 | 中国石油大学(北京) | Electric control fluid drive coiled tubing downhole retractor |
| CN204344030U (en) * | 2014-12-19 | 2015-05-20 | 中国石油大学(华东) | Legged continuous-tube drilling tractor |
| CN105332667A (en) * | 2015-11-26 | 2016-02-17 | 长江大学 | Coiled tubing tractor |
| CN205370484U (en) * | 2016-03-10 | 2016-07-06 | 长江大学 | Coiled tubing tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105649561A (en) | 2016-06-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20180310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |