CN105332667B - A kind of coiled tubing tractor - Google Patents
A kind of coiled tubing tractor Download PDFInfo
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- CN105332667B CN105332667B CN201510838327.0A CN201510838327A CN105332667B CN 105332667 B CN105332667 B CN 105332667B CN 201510838327 A CN201510838327 A CN 201510838327A CN 105332667 B CN105332667 B CN 105332667B
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- rotary sleeve
- rotary
- coiled tubing
- cam
- rotary shaft
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Abstract
The present invention relates to a kind of coiled tubing tractors, belong to oil gas field downhole tool technical field.The tractor includes rotary shaft, rotary sleeve A, rotary sleeve B, connected with outer casing, screw drive axis, motor connector and thrust bearing, rotary sleeve A is movably installed in rotary shaft, rotary sleeve B is equipped with by rotary sleeve on rotary sleeve A, it is respectively arranged with limit shoulder on rotary sleeve A and rotary sleeve B, connection is mutually clamped by limiting the cooperation of shoulder between rotary sleeve A and rotary sleeve B.It when the tractor works, is rotated by power drive screw drive axis of drilling mud, power facilitates acquisition.Reliability greatly improves.It efficiently solves larger in underground frictional resistance because of coiled tubing, tripping in and takes out difficult, bit pressure and the technical barriers such as be difficult to apply, so that coiled tubing is extended in underground longer.
Description
Technical field
The present invention relates to a kind of coiled tubing tractors, belong to oil gas field downhole tool technical field.
Background technology
Before the 1930s, just the concept to continuous well drilling pipe column and advantage have preliminary understanding to people.
During the Second World War, allied forces once used coiled tubing to convey the energy from seabed, to meet the needs of war.It is reported that 1962 plus profit
The oil companies Fu Niya and Bo Wen tools factories have developed first archetype " continuously managing light-duty reparing device for vehicle ", for removing seashore
Sand bridge in area's oil/gas well.1964, Roy H.Culla Research companies had developed a kind of well system, which makes
With a continuous, flexible well drilling pipe column（Outer diameter φ 66.68mm）Carry out circulating liquid, and drives underground electric using electric current
Dynamic motor, well drilling pipe column is put into or recycles using a hydraulic pressure injection head.The system is once in the Marble of Texas
The test well of a bite φ 120.65mm, well depth 304.8m, bit speed have been bored on stone factory's granitic formation near Falls
For 1.53~3.05m/h.
In more than 20 years thereafter, although coiled tubing technology achieves some progress, and in well workover and completion practice
Some applications are obtained, also carried out drilling well trial, but due to evaluation for coiled tubing reliability problem, fail to obtain big model in oil circle
The popularization and application enclosed.The middle and later periods eighties, crude oil price drop, forces domestic and international operation company and service company in world wide
Research and use can reduce the new method of drilling cost, add the raising of coiled tubing q＆r, and coiled tubing exists
Application in the operations such as well workover and completion sharply increases, and achieves apparent economic benefit and social benefit.Coiled tubing exists
It needs that downhole tractor, downhole tractor, that is, underground crawl device is used also to make underground climbing mechanism, underground dilatory when work
Machine, downhole tractor device people, downhole hydraulic pressurizer, downhole drill bit propeller etc., be it is a kind of can shaft bottom provide tractive force
Downhole tool.Downhole tractor can be divided into idler wheel creeping-type, crawler belt creeping-type by its motion principle（Track-mounted）It is stretched with arm rest is grabbed
Contracting slidingtype（Step-by-step movement）3 kinds, wherein wheeled occur earliest, telescopic to take second place, crawler type is the latest.It draws crawl device and presses its energy
Amount source can be divided into CT formulas, cable type and 3 kinds hybrid.For the country, foreign countries all take stringent technical know-how and arrange
It applies, causes the domestic research to downhole tractor also in the stage of ground zero.
Invention content
It is an object of the invention to：It is simple in structure to provide one kind, it is easy to use, using drilling mud as power, to realize
The coiled tubing tractor that coiled tubing is creeped forward automatically.
The technical scheme is that：
A kind of coiled tubing tractor, including rotary shaft, rotary sleeve A, rotary sleeve B, connected with outer casing, screw drive axis, horse
Up to connector and thrust bearing, it is characterised in that：It is movably installed with rotary sleeve A in rotary shaft, is set with by rotary shaft on rotary sleeve A
Have and be respectively arranged with limit shoulder on rotary sleeve B, rotary sleeve A and rotary sleeve B, passes through limiting stand between rotary sleeve A and rotary sleeve B
The cooperation of shoulder is mutually clamped connection；Multiple connecting rods are movably installed with by slip ring respectively on the circumference of rotary sleeve A and rotary sleeve B,
It is mutually flexibly connected by backup block between connecting rod；It is equipped with outside connection by thrust bearing in the rotary shaft of the sides rotary sleeve A
Shell, screw thread is equipped with motor connector in the rotary shaft in connected with outer casing, is filled by screw rod shell in the rotary shaft in motor connector
There is screw drive axis.
Resetting spring is symmetrically installed on the backup block, one end of resetting spring is connect with connecting rod respectively.
The motor connector is fixedly connected by fixing bolt with connected with outer casing.
Motor connector is connect with screw rod outer casing screw.
Cylindrical cam A is provided in the corresponding rotary shaft of the rotary sleeve A, on the corresponding rotary sleeve A inner walls of cylindrical cam A
It is provided in the corresponding rotary shaft of cam rail slot A, rotary sleeve B and is provided with cylindrical cam B, the corresponding rotary sleeves of cylindrical cam B
It is provided with cam rail slot B on B inner walls, passes through cylindrical cam A and cam between rotary sleeve A and rotary sleeve B and rotary shaft respectively
Track groove A and cylindrical cam B and the cooperation of cam rail slot B are slidably connected.
The cam rail slot A and cam rail slot are respectively annular groove.
It is in be oppositely arranged between the cam rail slot A and cam rail slot B.
The cylindrical cam A and cylindrical cam B is made of installation cylinder, rolling ring and gland respectively, installs cylinder
Top is movably installed with rolling ring by sliding slot, and head cover is equipped with by bolt on the installation cylinder above rolling ring, head cover with
Rolling ring is slidably connected.
The beneficial effects of the present invention are：
It when the coiled tubing tractor works, is rotated by power drive screw drive axis of drilling mud, power conveniently obtains
It takes.By cam rail slot and cylindrical cam combine in the way of realize underground automatic reverse, it is simple and reliable for structure, due to being pure
Mechanically, cable and control section have been subtracted so that easy break-down, reliability do not greatly improve tool.Efficiently solve because
Coiled tubing is larger in underground frictional resistance, tripping in and takes out difficult, bit pressure and the technical barriers such as is difficult to apply, and makes coiled tubing in underground
It can extend longer.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is enlarged structure schematic diagram at the D of Fig. 1；
Fig. 3 be Fig. 1 A-A to cam rail slot and cylindrical cam connection diagram；
Fig. 4 is the structural schematic diagram of the cylindrical cam of the present invention；
Fig. 5 is the expanded schematic diagram of the cam rail slot of the present invention；
Fig. 6 is the cam rail slot and cylindrical cam relative motion figure of the present invention.
In figure：1, rotary shaft, 2, rotary sleeve A, 3, rotary sleeve B, 4, connected with outer casing, 5, screw drive axis, 6, motor connector,
7, thrust bearing, 8, cylindrical cam A, 9, cam rail slot A, 10, cylindrical cam B, 11, cam rail slot B, 12, installation cylinder,
13, rolling ring, 14, gland, 15, slip ring, 16, connecting rod, 17, backup block, 18, resetting spring, 19, screw rod shell, 20, fixed spiral shell
Bolt, 21, discharge orifice, 22, stop shoulder.
Specific implementation mode
The coiled tubing tractor include rotary shaft 1, rotary sleeve A2, rotary sleeve B3, connected with outer casing 4, screw drive axis 5,
Motor connector 6 and thrust bearing 7.It is movably installed with rotary sleeve A2 in rotary shaft 1, is set with by rotary shaft 1 on rotary sleeve A2
It is respectively arranged with limit shoulder on rotary sleeve B3, rotary sleeve A2 and rotary sleeve B3, passes through limit between rotary sleeve A2 and rotary sleeve B3
The cooperation of position shoulder is mutually clamped connection.
It is provided with cylindrical cam A8, the corresponding rotary sleeve A2 inner walls of cylindrical cam A8 in the corresponding rotary shafts of rotary sleeve A2 1
On be provided with cam rail slot A9.
It is provided with cylindrical cam B10, the rotary sleeve B3 inner walls that cylindrical cam B10 is answered in the corresponding rotary shafts of rotary sleeve B3 1
On be provided with cam rail slot B11, between rotary sleeve A2 and rotary sleeve B3 and rotary shaft 1 respectively by cylindrical cam A8 with it is convex
Wheel track slot A9 and cylindrical cam B10 and the cooperation of cam rail slot B11 are slidably connected.Cam rail slot A9 and cam rail slot
B11 is respectively annular groove.
It is in be oppositely arranged between cam rail slot A9 and cam rail slot B11.
Cylindrical cam A8 and cylindrical cam B10 is made of installation cylinder 12, rolling ring 13 and gland 14 respectively, installs cylinder
12 top is movably installed with rolling ring 13 by sliding slot, and top is equipped with by bolt on the installation cylinder 12 of 13 top of rolling ring
Lid 14, head cover 14 are slidably connected with rolling ring 13.
Multiple connecting rods 16 are movably installed with by slip ring 15 respectively on the circumference of rotary sleeve A2 and rotary sleeve B3, connecting rod 16 it
Between pass through backup block 17 mutually be flexibly connected.Resetting spring 18, one end point of resetting spring 18 are symmetrically installed on backup block 17
It is not connect with connecting rod 16.
Connected with outer casing 4, the rotation of 7 inside of thrust bearing are equipped with by thrust bearing 7 in the rotary shaft 1 of the sides rotary sleeve A2
Stop shoulder 22 is set in shaft 1, and effect is that connected with outer casing 4 is driven to move ahead.Screw thread is pacified in rotary shaft 1 in connected with outer casing 4
Equipped with motor connector 6, screw drive axis 5 is equipped with by screw rod shell 19 in the rotary shaft 1 in motor connector 6.
The motor connector 6 of the coiled tubing tractor is fixedly connected by fixing bolt 20 with connected with outer casing 4.Motor connector
It is threadedly coupled between 6 and screw rod shell 19.
The coiled tubing tractor rotates by power drive screw drive axis 5 of drilling mud, then is with screw drive axis 5
Power drives rotary shaft 1 to rotate, and discharge orifice 21 is provided in rotary shaft 1 and is used as slurry outlet.To ensure that rotary shaft 1 does not pull screw rod
Transmission shaft 5, design motor connector 6 are connect with screw rod shell 19, pass through fixing bolt 20 between motor connector 6 and connected with outer casing 4
Connection compresses.Shoulder and installed thrust bearing 7 are set in rotary shaft 1 and bear axial force, makes axial force transmission to connected with outer casing 4,
To be transmitted to screw rod shell 19, screw drive axis 5 is made not received larger axial force.
When work, coiled tubing is connect with screw rod shell 19 first, due to connecing coiled tubing matter behind screw drive axis 5
Amount is big so that the cylindrical cam in rotary shaft 1 only drives rotary sleeve to rotate, and rotary sleeve A2 moves right the slip ring pushed thereon
15 right axial movements.Rotary sleeve B3 is moved to the left the 15 left axial movement of slip ring pushed thereon.On rotary sleeve A2 and rotary sleeve B3
Connecting rod 16 slip ring 15 in opposite directions axial movement drive under shrink, to make backup block 17 compress the borehole wall.
Rotary shaft 1 continues to rotate, and since backup block 17 compresses the borehole wall, rotary sleeve is immovable by active force, rotary shaft 1
With rotary sleeve formed relative motion, make rotary shaft 1 move forward, connected with outer casing 4 effect under drive subsequent coiled tubing to
It moves right, is achieved in coiled tubing distraction procedure to the right, after coiled tubing advance certain distance, cam rail slot and cylinder are convex
The relative motion of wheel is reversed, and rotary sleeve A2 is moved to the left, and rotary sleeve B3 moves right, and backup block 17 is detached from the borehole wall, returns initial
State.Repeatedly, until reaching the traction of coiled tubing maximum distance.
The coiled tubing tractor realizes the traction work of coiled tubing by the relative motion between rotary sleeve and rotary shaft 1
Make, when cylindrical cam is moved to close to the vertex position of cam rail slot, the connecting rod 16 on rotary sleeve A2 and rotary sleeve B3 is in
Distracted maximum rating, to make backup block 17 compress the borehole wall.At this point, cylindrical cam continues the vertex position to cam rail slot
Operation, during this, since connecting rod 16 is in distracted maximum rating, rotary sleeve is stuck, but cylindrical cam continues to keep
The trend of movement, rotary shaft 1 moves ahead relative to rotary sleeve at this time, to be driven outside screw rod by connected with outer casing 4, motor connector 5
Shell 19 moves ahead, and thus coiled tubing is driven to move ahead.
When cylindrical cam is moved downward from the vertex position of cam rail slot, 16 Stepwize Shrink of connecting rod, to make backup
Block 17 is detached from the borehole wall.Cable and control section have been subtracted compared to existing apparatus, its reliability is made to greatly improve.It efficiently solves
It because coiled tubing is larger in underground frictional resistance, tripping in and takes out difficult, bit pressure and the technical barriers such as is difficult to apply, make coiled tubing in well
Lower energy extends longer.
Claims (4)
1. a kind of coiled tubing tractor, including rotary shaft（1）, rotary sleeve A（2）, rotary sleeve B（3）, connected with outer casing（4）, screw rod
Transmission shaft（5）, motor connector（6）And thrust bearing（7）, it is characterised in that：Rotary shaft（1）On be movably installed with rotary sleeve A
（2）, rotary sleeve A（2）On pass through rotary shaft（1）It is set with rotary sleeve B（3）, rotary sleeve A（2）With rotary sleeve B（3）It is upper to set respectively
It is equipped with limit shoulder, rotary sleeve A（2）With rotary sleeve B（3）Between by limit shoulder cooperation be mutually clamped connection；Rotary sleeve A
（2）With rotary sleeve B（3）Circumference on pass through slip ring respectively（15）It is movably installed with multiple connecting rods（16）, connecting rod（16）Between lead to
Cross backup block（17）Mutually flexible connection；Rotary sleeve A（2）The rotary shaft of side（1）On pass through thrust bearing（7）Connection is installed
Shell（4）, connected with outer casing（4）Interior rotary shaft（1）Upper screw thread is equipped with motor connector（6）, motor connector（6）Pass through fixed spiral shell
Bolt（20）With connected with outer casing（4）It is fixedly connected；Motor connector（6）Interior rotary shaft（1）It is upper to pass through screw rod shell（19）Equipped with spiral shell
Bar transmission shaft（5）；Motor connector（6）With screw rod shell（19）It is threadedly coupled；The rotary sleeve A（2）Corresponding rotary shaft（1）On
It is provided with cylindrical cam A（8）, cylindrical cam A（8）Corresponding rotary sleeve A（2）Cam rail slot A is provided on inner wall（9）, rotation
Pivoted housing B（3）Corresponding rotary shaft（1）On be provided with cylindrical cam B（10）, cylindrical cam B（10）Corresponding rotary sleeve B（3）It is interior
Cam rail slot B is provided on wall（11）, rotary sleeve A（2）With rotary sleeve B（3）With rotary shaft（1）Between pass through cylinder respectively
Cam A（8）With cam rail slot A（9）With cylindrical cam B（10）With cam rail slot B（11）Cooperation be slidably connected；Described
Cylindrical cam A（8）With cylindrical cam B（10）By installation cylinder（12）, rolling ring（13）And gland（14）It constitutes, cylinder is installed
（12）Top rolling ring is movably installed with by sliding slot（13）, rolling ring（13）The installation cylinder of top（12）On pass through bolt
Head cover is installed（14）, head cover（14）With rolling ring（13）It is slidably connected.
2. a kind of coiled tubing tractor according to claim 1, it is characterised in that：The backup block（17）It is upper symmetrical
Resetting spring is installed（18）, resetting spring（18）One end be located at backup block（17）On, resetting spring（18）The other end with
Connecting rod（16）Connection.
3. a kind of coiled tubing tractor according to claim 1, it is characterised in that：The cam rail slot A（9）With
Cam rail slot B（11）It is annular groove.
4. a kind of coiled tubing tractor according to claim 1, it is characterised in that：The cam rail slot A（9）With
Cam rail slot B（11）Between in being oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510838327.0A CN105332667B (en) | 2015-11-26 | 2015-11-26 | A kind of coiled tubing tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510838327.0A CN105332667B (en) | 2015-11-26 | 2015-11-26 | A kind of coiled tubing tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105332667A CN105332667A (en) | 2016-02-17 |
| CN105332667B true CN105332667B (en) | 2018-07-24 |
Family
ID=55283400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510838327.0A Expired - Fee Related CN105332667B (en) | 2015-11-26 | 2015-11-26 | A kind of coiled tubing tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105332667B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649561B (en) * | 2016-03-10 | 2017-10-17 | 长江大学 | A kind of coiled tubing tractor |
| CN108086933B (en) * | 2016-11-21 | 2020-05-08 | 中国石油天然气股份有限公司 | Cable conveying device for horizontal well |
| 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 |
Citations (7)
| 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 |
| CN2806749Y (en) * | 2005-03-13 | 2006-08-16 | 高进伟 | Downhole wheel-type self-adapting pipe crawler for horizontal well |
| CN1823208A (en) * | 2003-07-16 | 2006-08-23 | 施蓝姆伯格技术公司 | Open hole tractor with tracks |
| CN201004288Y (en) * | 2006-09-29 | 2008-01-09 | 路宗新 | A cam structure teaching tool |
| CN202116692U (en) * | 2011-05-18 | 2012-01-18 | 上海普罗新能源有限公司 | Rotary lifting mechanism of composite cylindrical cam of thermal switch of polysilicon ingot furnace |
| CN204476253U (en) * | 2015-02-10 | 2015-07-15 | 山东科瑞国际油气工程有限公司 | A kind of down-hole screw motor transmission device |
| CN205172494U (en) * | 2015-11-26 | 2016-04-20 | 长江大学 | Coiled tubing tractor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7516782B2 (en) * | 2006-02-09 | 2009-04-14 | Schlumberger Technology Corporation | Self-anchoring device with force amplification |
-
2015
- 2015-11-26 CN CN201510838327.0A patent/CN105332667B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| CN1823208A (en) * | 2003-07-16 | 2006-08-23 | 施蓝姆伯格技术公司 | Open hole tractor with tracks |
| CN2806749Y (en) * | 2005-03-13 | 2006-08-16 | 高进伟 | Downhole wheel-type self-adapting pipe crawler for horizontal well |
| CN201004288Y (en) * | 2006-09-29 | 2008-01-09 | 路宗新 | A cam structure teaching tool |
| CN202116692U (en) * | 2011-05-18 | 2012-01-18 | 上海普罗新能源有限公司 | Rotary lifting mechanism of composite cylindrical cam of thermal switch of polysilicon ingot furnace |
| CN204476253U (en) * | 2015-02-10 | 2015-07-15 | 山东科瑞国际油气工程有限公司 | A kind of down-hole screw motor transmission device |
| CN205172494U (en) * | 2015-11-26 | 2016-04-20 | 长江大学 | Coiled tubing tractor |
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| Publication number | Publication date |
|---|---|
| CN105332667A (en) | 2016-02-17 |
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Granted publication date: 20180724 Termination date: 20201126 |