CN105649561A - Coiled tubing tractor - Google Patents
Coiled tubing tractor Download PDFInfo
- Publication number
- CN105649561A CN105649561A CN201610135288.2A CN201610135288A CN105649561A CN 105649561 A CN105649561 A CN 105649561A CN 201610135288 A CN201610135288 A CN 201610135288A CN 105649561 A CN105649561 A CN 105649561A
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- central siphon
- bullet
- screw rod
- shell
- 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.)
- Granted
Links
- 230000033001 locomotion Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 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 invention relates to a coiled tubing tractor and belongs to the technical field of downhole tools for oil and gas field. The tractor comprises a rotary shaft pipe, a housing, a screw rod housing, a screw rod transmission shaft, a cone-shaped body and a wedge block. The tractor is characterized in that the housing is mounted on the rotary shaft pipe in a sleeving manner; the screw rod transmission shaft is mounted at the end of the rotary shaft pipe in the housing by a screw thread; the screw rod housing is mounted on the screw rod transmission shaft; a motor connector is mounted on the rotary shaft pipe on one side of the screw rod housing; and a connecting housing is mounted on the rotary shaft pipe on one side of the motor connector. The tractor is simple in structure and novel in design; a drilling fluid is taken as power in a working process, the rotary shaft pipe is driven to rotate through the screw rod, and a coiled tubing is driven to crawl forwards through a relative movement between the cone-shaped body and a rotary shaft, so that the traction work of the coiled tubing is realized and the problems of relatively large downhole friction, difficulty in descending and ascending and difficulty in bit pressure application of an existing tractor are solved; and the coiled tubing tractor is especially suitable for coiled tubing traction in operations of well repair, well completion and the like.
Description
Technical field
The present invention relates to a kind of coiled tubing traction apparatus, belong to oil gas field downhole tool technical field.
Background technology
The eighties middle and late stage, crude oil price drop in world wide, force domestic and international operation company and service company's research and adopt the new method that can reduce drilling cost, add the raising of coiled tubing q&r, coiled tubing application in the operation such as well workover and completion sharply increases, and achieves obvious economic benefit and social benefit.
Downhole tractor and down-hole crawl device, be also down-hole climbing mechanism, underground tractor, downhole tractor device people, downhole hydraulic prelum, downhole drill bit propeller etc., be a kind of downhole tool that can provide pull strength in shaft bottom. Downhole tractor can be divided into roller creeping-type, crawler belt creeping-type (track-mounted) by its motion principle and grab arm rest telescopic slide formula (step-by-step movement) 3 kinds, and wherein wheeled appearance is the earliest, telescopic takes second place, and crawler type is the latest. Traction crawl device can be divided into CT formula, cable type and hybrid 3 kinds by its energy source. For domestic, abroad all take strict technical know-how measure, cause the domestic research to downhole tractor also in stage of ground zero. Current domestic existing traction apparatus is due to design reasons, mostly there is poor structural reliability, down-hole frictional resistance is bigger, under enter and take out difficulty, the pressure of the drill be difficult to the defects such as applying, therefore, be necessary to research and develop a kind of simple in construction, can effectively solve down-hole frictional resistance relatively big, under enter and take out traction apparatus difficult, that the pressure of the drill is difficult to the technical barriers such as applying.
Summary of the invention
It is an object of the invention to: a kind of simple in construction is provided, can effectively solve down-hole frictional resistance relatively big, under enter and take out coiled tubing traction apparatus difficult, that the pressure of the drill is difficult to apply problem.
The technical scheme is that
A kind of coiled tubing traction apparatus, including rotating central siphon, shell, screw rod shell, screw drive axle, bullet and voussoir, it is characterised in that: rotating and be set with shell on central siphon, shell one end is provided with end cap by screw, the rotation central siphon of end cap side is provided with stop nut A
Rotating shaft pipe end screw thread in shell is provided with screw drive axle;Equipped with screw rod shell on screw drive axle, equipped with motor joint on the rotation central siphon of screw rod shell side, the rotation central siphon of motor joint side is provided with connected with outer casing by thrust bearing, is bolted fixing between connected with outer casing and motor joint; Being provided with stop nut B on connected with outer casing, stop nut B is connected with housing contacts; Being movably installed with bullet on rotation central siphon inside end cap, the casing circumference corresponding with bullet is evenly equipped with multiple fixing hole, be provided with voussoir in fixing hole, voussoir and bullet are slidably connected.
Being provided with rotary pin shaft on described rotation central siphon, on bullet, shape corresponding to rotary pin shaft is provided with cam rail groove, and bullet is slidably connected with rotating central siphon by the cooperation of rotary pin shaft and cam rail groove.
Described rotary pin shaft is provided with turning set.
Axially being evenly equipped with wedge groove on described bullet, voussoir is slidably connected by wedge groove and bullet.
The rotation central siphon of described thrust bearing side is provided with spacing shoulder; The rotation central siphon of thrust bearing opposite side is 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 is:
This coiled tubing retractor structures is simple, novel in design, with drilling mud for power in work process, central siphon is rotated by screw rod and rotates, drives coiled tubing to creep forward again through the relative motion between bullet and rotating shaft; Thus realizing the traction work of coiled tubing, efficiently solve existing traction apparatus down-hole frictional resistance relatively big, under enter and takes out difficulty, problem that the pressure of the drill is difficult to applying; It is particularly well-suited in the operation such as well workover and completion and draws coiled tubing use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the A place structure for amplifying schematic diagram of Fig. 1;
Fig. 3 is the expansion schematic diagram of the cam rail groove of the present invention;
Fig. 4 is the rotary pin shaft of present invention motion schematic diagram in cam rail groove;
Fig. 5 is the rotary pin shaft axial connection diagram with cam rail groove of the present invention;
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: 1, rotate central siphon, 2, shell, 3, screw rod shell, 4, screw drive axle, 5, bullet, 6, voussoir, 7, end cap, 8, stop nut A, 9, motor joint, 10, thrust bearing, 11, connected with outer casing, 12, bolt, 13, stop nut B, 14, spacing shoulder, 15, discharge orifice, 16, rotary pin shaft, 17, cam rail groove, 18, wedge groove, 19, turning set.
Detailed description of the invention
This coiled tubing traction apparatus includes rotating central siphon 1, shell 2, screw rod shell 3, screw drive axle 4, bullet 5 and voussoir 6. Rotating and be set with shell 2 on central siphon 1, shell 2 one end is provided with end cap 7 by screw, and the rotation central siphon 1 of end cap 7 side is provided with stop nut A8.
Rotation central siphon 1 ends screw in shell 2 is provided with screw drive axle 4; Equipped with screw rod shell 3 on screw drive axle 4, equipped with motor joint 9 on the rotation central siphon 1 of screw rod shell 3 side, screw rod shell 3 is threadeded with motor joint 9.
The rotation central siphon 1 of motor joint 9 side is provided with connected with outer casing 11 by thrust bearing 10, is connected by bolt 12 fixing between connected with outer casing 11 with motor joint 9, is connected for key between connected with outer casing 11 with shell 2; Being provided with stop nut B13 on connected with outer casing 11, stop nut B13 contacts connection with shell 2;The rotation central siphon 1 of thrust bearing 10 side is provided with spacing shoulder 14; The rotation central siphon 1 of thrust bearing 10 opposite side is provided with discharge orifice 15.
Rotation central siphon 1 inside end cap 3 is provided with rotary pin shaft 16; Rotating and be movably installed with bullet 5 by rotary pin shaft 16 on central siphon 1, on bullet 5, shape corresponding to rotary pin shaft 16 is provided with cam rail groove 17, and bullet 5 is slidably connected with rotating central siphon 1 by the cooperation of rotary pin shaft 16 and cam rail groove 17. Being evenly equipped with multiple fixing hole on shell 2 circumference corresponding with bullet 5, be provided with voussoir 6 in fixing hole, bullet 5 is axially evenly equipped with wedge groove 18, voussoir 6 is slidably connected by wedge groove 18 and bullet 5.
This coiled tubing traction apparatus rotary pin shaft 16 is provided with turning set 19; To increase the slide coefficient between rotary pin shaft 16 and cam rail groove 17.
With drilling mud for power during the work of this coiled tubing traction apparatus, central siphon 1 is rotated by screw drive axle 4 to rotate, coiled tubing quality owing to connecting after screw rod shell 3 is big, the rotary pin shaft 16 rotated on central siphon 1 is made only to drive bullet 5 to rotate, when bullet 5 is moved to the left on rotating shaft pipe 1, voussoir 6 is progressively promoted to extend radially out by wedge groove 18, thus compressing the borehole wall. Rotate central siphon 1 to continue to rotate, owing to voussoir 6 compresses the borehole wall, it is immovable that bullet 5 is subject to active force, rotate central siphon 1 and form relative motion with bullet 5, move forward so that rotating central siphon 1, coiled tubing is thus driven to move right under connected with outer casing 11 acts on, it is achieved coiled tubing is distraction procedure to the right. After coiled tubing reaches traction maximum distance, cam rail groove 17 is reverse with the relative motion of rotary pin shaft 16, and bullet 5 moves right on rotating shaft pipe 1, and voussoir 6 now progressively radially bounces back along with the movement of bullet 5, voussoir 6 departs from the borehole wall, returns original state.
This coiled tubing traction apparatus passes through voussoir 6, bullet 5 and the relative motion rotated between central siphon 1 realize the traction work of coiled tubing, for ensureing that rotating central siphon 1 does not pull screw drive axle 4 at work, employing devises motor joint 9 and threadeds with screw rod shell 3, motor joint 9 and connected with outer casing 11 is connected by bolt 12, rotates and arranges shoulder 14 on central siphon 1 and installed thrust bearing 10 bears the mode of axial force; So that axial force transmission is to connected with outer casing 11, then it is delivered to screw rod shell, makes screw drive axle 4 not by excessive axial force.
The similar oval annular groove (referring to Fig. 2) of cam rail groove 17 on this coiled tubing traction apparatus bullet 5, it has certain angle of inclination at bullet 5, during work, the leading portion of cam rail groove 17 can make bullet 5 relatively move right on rotation central siphon 1, and the second half section part of cam rail groove 17 can make bullet 5 rotate on central siphon 1 relatively to left movement. Bullet 5 can promote voussoir 6 radial motion in motor process. And being connected by spline between shell 2 with connected with outer casing 11, shell 2 can axially move, but is affected by the restriction of stop nut.
This coiled tubing retractor structures is simple and reliable, solves existing traction apparatus down-hole frictional resistance relatively big, under enter and takes out difficulty, problem that the pressure of the drill is difficult to applying; This coiled tubing traction apparatus is due to for Purely mechanical, it does not have cable and control part so that instrument is easy break-down not, and reliability is greatly improved, and coiled tubing can be made to extend in down-hole longer.
Claims (7)
1. a coiled tubing traction apparatus, including rotating central siphon (1), shell (2), screw rod shell (3), screw drive axle (4), bullet (5) and voussoir (6), it is characterized in that: rotate and central siphon (1) is set with shell (2), shell (2) one end is provided with end cap (7) by screw, the rotation central siphon (1) of end cap (7) side is provided with stop nut A(8)
Rotation central siphon (1) ends screw in shell (2) is provided with screw drive axle (4);Equipped with screw rod shell (3) on screw drive axle (4), equipped with motor joint (9) on the rotation central siphon (1) of screw rod shell (3) side, the rotation central siphon (1) of motor joint (9) side is provided with connected with outer casing (11) by thrust bearing (10), is connected by bolt (12) fixing between connected with outer casing (11) with motor joint (9); Connected with outer casing is provided with stop nut B(13 on (11)), stop nut B(13) contact connection with shell (2); Being movably installed with bullet (5) on the rotation central siphon (1) of end cap (7) inner side, shell (2) circumference corresponding with bullet (5) is evenly equipped with multiple fixing hole, be provided with voussoir (6) in fixing hole, voussoir (6) and bullet (5) are slidably connected.
2. a kind of coiled tubing traction apparatus according to claim 1, it is characterized in that: described rotation central siphon (1) is provided with rotary pin shaft (16), the upper shape corresponding to rotary pin shaft (16) of bullet (5) is provided with cam rail groove (17), and bullet (5) is slidably connected with rotating central siphon (1) by the cooperation of rotary pin shaft (16) and cam rail groove (17).
3. a kind of coiled tubing traction apparatus according to claim 2, it is characterised in that: described rotary pin shaft (16) is provided with turning set (19).
4. a kind of coiled tubing traction apparatus according to claim 1, it is characterised in that: being axially evenly equipped with wedge groove (18) on described bullet (5), voussoir (6) is slidably connected by wedge groove (18) and bullet (5).
5. a kind of coiled tubing traction apparatus according to claim 1, it is characterised in that: the rotation central siphon (1) of described thrust bearing (10) side is provided with spacing shoulder (14); The rotation central siphon (1) of thrust bearing (10) opposite side is provided with discharge orifice (15).
6. a kind of coiled tubing traction apparatus according to claim 1, it is characterised in that: described screw rod shell (3) is threadeded with motor joint (9).
7. a kind of coiled tubing traction apparatus according to claim 1, it is characterised in that: described connected with outer casing (11) is connected with shell (2) key.
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 true CN105649561A (en) | 2016-06-08 |
| CN105649561B 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) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN107605418A (en) * | 2017-10-27 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing waterpower draws crawl device |
| CN107859495A (en) * | 2017-12-22 | 2018-03-30 | 长江大学 | A kind of telescopic downhole tractor |
| CN108931345A (en) * | 2018-09-10 | 2018-12-04 | 陈朝晖 | One kind suppressing leakage detection apparatus |
| CN111852358A (en) * | 2020-08-25 | 2020-10-30 | 重庆科技学院 | Multi-branch yield-increasing drilling stroke-increasing crawling tool |
| CN112855056A (en) * | 2021-01-07 | 2021-05-28 | 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 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN107605418A (en) * | 2017-10-27 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing waterpower draws crawl device |
| CN107859495A (en) * | 2017-12-22 | 2018-03-30 | 长江大学 | A kind of telescopic downhole tractor |
| CN107859495B (en) * | 2017-12-22 | 2023-06-30 | 长江大学 | Telescopic underground tractor |
| CN108931345A (en) * | 2018-09-10 | 2018-12-04 | 陈朝晖 | One kind suppressing leakage detection apparatus |
| CN108931345B (en) * | 2018-09-10 | 2020-08-28 | 陈朝晖 | Suppress leak hunting device |
| CN111852358A (en) * | 2020-08-25 | 2020-10-30 | 重庆科技学院 | Multi-branch yield-increasing drilling stroke-increasing crawling tool |
| CN111852358B (en) * | 2020-08-25 | 2024-03-19 | 重庆科技学院 | Multi-branch yield-increasing drilling Cheng Pahang tool |
| CN112855056A (en) * | 2021-01-07 | 2021-05-28 | 河南理工大学 | Automatic dismounting equipment and dismounting method for magnetic buckle type supporting sleeve of underground coiled tubing |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105649561B (en) | 2017-10-17 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20171017 Termination date: 20180310 |