CN106677732A - All-hydraulic petroleum downhole traction device - Google Patents
All-hydraulic petroleum downhole traction device Download PDFInfo
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- CN106677732A CN106677732A CN201611258671.3A CN201611258671A CN106677732A CN 106677732 A CN106677732 A CN 106677732A CN 201611258671 A CN201611258671 A CN 201611258671A CN 106677732 A CN106677732 A CN 106677732A
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Transplanting Machines (AREA)
Abstract
The invention discloses an all-hydraulic petroleum downhole traction device. The all-hydraulic petroleum downhole traction device comprises a hydraulic-control combination unit, a central pipe and two hydraulic-control support units which are coaxially arranged; the hydraulic-control combination unit is arranged between the two hydraulic-control support units and used for controlling the oil liquid flow direction in the hydraulic-control support units, and each hydraulic-control support unit comprises a support claw component, a support hydraulic cylinder, a walking hydraulic cylinder and a buffer hydraulic cylinder; the support claw components can be opened or contracted when support pistons of the support hydraulic cylinders move, the central pipe is sequentially arranged in the two hydraulic-control support units in a penetrating mode, walking pistons of the walking hydraulic cylinders are both fixedly connected with the central pipe, the buffer hydraulic cylinders are located at the ends, far away from the support hydraulic cylinders, of the walking hydraulic cylinders and communicate with the hydraulic-control combination unit through oil ways, and the hydraulic-control combination unit is arranged between the two hydraulic-control support units and used for controlling the oil liquid flow direction in the support hydraulic cylinders and the walking hydraulic cylinders of the hydraulic-control support units. The all-hydraulic petroleum downhole traction device has the advantages of being compact in structure, large in traction force, high in advancing speed, stable and reliable in working and the like.
Description
Technical field
The present invention relates to oil and gas development field, more particularly to a kind of all-hydraulic oil well lower traction equipment.
Background technology
In field of oil development, widely, coiled tubing underground work must draw coiled tubing purposes by down-hole
Device, downhole tractor be it is a kind of can shaft bottom provide pull strength downhole tool, under oil well be usually High Temperature High Pressure complexity
Environment, and narrow space, therefore, downhole tractor must adapt to the complex environment of High Temperature High Pressure, and small volume simultaneously has enough
Pull strength.
But generally exist in existing traction apparatuss technology following not enough：First, on the support structure, external wheeled traction apparatuss relative to into
It is ripe, but running on wheels is relied on, driving force is little, and inner-walls of duct greasy dirt easily skids when more, and does not advise when inner-walls of duct is run into
Severe situation then, traction apparatuss stability is very poor；2nd, in type of drive, relatively conventional at present is electric drive mode, is led to
Cross Motor drive feed screw nut or carry out gear drive, although so simplifying design, retractor structures become complicated, fortune
Scanning frequency degree is low, and mechanical efficiency declines；3rd, most hydraulic-driven traction apparatuss make hydraulic pressure by cable connection electric component motor
Cylinder and oil circuit control conversion work, such traction apparatuss must design the fluid pressure line of complexity, while all electrical equipments and liquid
Pressure element is difficult the long-time normal work in the environment of High Temperature High Pressure, significantly reduces persistency of the traction apparatuss in underground work
And reliability.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided a kind of compact conformation, pull strength be big,
Fast, the stable and reliable in work all-hydraulic oil well lower traction equipment of gait of march.
To solve above-mentioned technical problem, the present invention is employed the following technical solutions：
A kind of all-hydraulic oil well lower traction equipment, including hydraulic control assembled unit, central canal and two groups of hydraulic controls being coaxially disposed
Support unit, the hydraulic control assembled unit is arranged on described in two groups to be used to control the hydraulic control support unit between hydraulic control support unit
In fluid flow direction, the hydraulic control support unit includes supporting claw assembly, supporting cylinder, walking hydraulic cylinder and buffering hydraulic
Cylinder, the support claw assembly can open or shrink when the support piston of the supporting cylinder is moved, and the central canal is successively
In being arranged in hydraulic control support unit described in two groups, the walking piston of hydraulic cylinder of walking described in two groups is fixed with the central canal and connected
Connect, the buffering hydraulic cylinder is located at the walking hydraulic cylinder and combines single away from one end of the supporting cylinder and with the hydraulic control
By oil communication, the hydraulic control assembled unit is arranged on described in two groups to be used to control the hydraulic control between hydraulic control support unit for unit
Fluid flow direction in the supporting cylinder and walking hydraulic cylinder of support unit.
As the further improvement of above-mentioned technical proposal：
The supporting cylinder, walking hydraulic cylinder and buffering hydraulic cylinder are coaxially disposed, and the buffering hydraulic cylinder includes can be described
The thrust piston of the commutation valve events of the hydraulic control assembled unit is controlled under the promotion of walking piston.
The buffering hydraulic cylinder also includes compression spring and buffering end cap, and the buffering end cap is set on the central canal
And positioned at the walking hydraulic cylinder and the junction of buffering hydraulic cylinder, hydraulic oil opening, institute are offered on the buffering end cap
State thrust piston and be provided with push stopping part and one end through the hydraulic oil opening and can be with the walking for being moved to least significant end
Piston contact, another side pressure is located at the first end of the compression spring to control the logical of the hydraulic oil opening when mobile
Disconnected, the second end of the compression spring is fixedly installed.
It is described support claw assembly be arranged on the supporting cylinder away from it is described walking hydraulic cylinder one end and with described
Support piston connection.
The support claw assembly includes that retainer, mobile slide block and the circumference along the central canal more than two are uniformly arranged
Flexible support bar group, the retainer is installed on the casing wall of the supporting cylinder away from the one of the walking hydraulic cylinder
End, the mobile slide block is slidably set on the central canal, and the support bar group includes flexible support bar, fixed cunning
Block, scroll wheel, first support bar and second support bar, described flexible support bar one end is hinged and the other end with the mobile slide block
The one end of casing wall away from the walking hydraulic cylinder of the supporting cylinder is installed on, the fixed slide block is installed in described
On retainer, the first end of the first support bar is hinged with the fixed slide block, the first end of the second support bar and institute
The second end for stating support piston hinge, the first support bar and second support bar is hinged with the scroll wheel, the rolling
Wheel is installed in the groove on the inside of the flexible support bar.
The oil-feed of the supporting cylinder of hydraulic control support unit is in opposite direction described in two groups, hydraulic control support unit described in two groups
The oil-feed of walking hydraulic cylinder is in opposite direction.
Compared with prior art, it is an advantage of the current invention that：
The all-hydraulic oil well lower traction equipment of the present invention, in the course of the work, first, the support hydraulic pressure of front hydraulic control support unit
Cylinder action, supports piston movement, makes front support claw assembly open locking well inwall, and front walking hydraulic cylinder action, walking piston is moved
It is dynamic, promote central canal to move forward relative to well inwall, the supporting cylinder pressure release of rear hydraulic control support unit makes rear support pawl group
Part shrinks, hydraulic cylinder action of walking afterwards, walking piston movement, and hydraulic control support unit is moved forward relative to central canal after promotion,
When the walking piston of current walking hydraulic cylinder is moved to setting position, the buffering hydraulic cylinder action of front hydraulic control support unit is made, it is real
Now by the supporting cylinder in hydraulic control assembled unit two groups of hydraulic control support units of control, the oil-feed oil circuit of walking hydraulic cylinder and oil return
Oil circuit changes, and now, the supporting cylinder action of rear hydraulic control support unit supports piston movement, makes rear support claw assembly
Locking well inwall is opened, hydraulic cylinder action of walking afterwards, walking piston movement promotes central canal to move forward relative to well inwall,
Shrink front support claw assembly, the walking piston of front walking hydraulic cylinder promotes front hydraulic control support unit relative to central canal to reach
It is dynamic, when the walking piston of rear walking hydraulic cylinder is moved to setting position, the buffering hydraulic cylinder action of rear hydraulic control support unit is made,
Supporting cylinder, the oil-feed oil circuit of walking hydraulic cylinder and oil return circuit is set to change again, so circulation, two groups of hydraulic controls are supported
Units alternately advances, and realizes that all-hydraulic oil well lower traction equipment is integrally pushed ahead, and arranges buffering hydraulic cylinder, can not only be expert at
The walking piston for walking hydraulic cylinder realizes that hydraulic control assembled unit is made in supporting cylinder, walking hydraulic cylinder when being moved to setting position
Fluid commutates, moreover it is possible to reduces impact of the walking piston to hydraulic cylinder end of walking, makes the fortune of all-hydraulic oil well lower traction equipment
Row is more steady.The all-hydraulic oil well lower traction equipment of the present invention, using hydraulic-driven, compared to most existing Motor drive
Or the traction apparatuss of purely mechanic driving, this device pull strength is bigger, and gait of march is faster.On concrete structure, the oil of the present invention
Downhole tractor adopts all-hydraulic control, and control system is simple, oil circuit reliability, the High Temperature High Pressure being suitable under oil well
Complex environment, functional reliability is high.
Description of the drawings
Fig. 1 is the structural representation of all-hydraulic oil well lower traction equipment of the invention.
Fig. 2 is the schematic diagram under all-hydraulic oil well lower traction equipment progradation first state of the invention.
Fig. 3 is the schematic diagram under second state of all-hydraulic oil well lower traction equipment progradation of the invention.
Fig. 4 is the schematic diagram under the all-hydraulic oil well lower traction equipment progradation third state of the invention.
Fig. 5 is the schematic diagram of the hydraulic control support unit of the present invention.
Fig. 6 is the profile of the supporting cylinder, walking hydraulic cylinder and buffering hydraulic cylinder of the present invention.
Fig. 7 is enlarged drawing at A in Fig. 6.
Fig. 8 is the schematic diagram of the flexible support bar group of the present invention.
Each label is represented in figure：
1st, hydraulic control support unit；1a, front hydraulic control support unit；1b, rear hydraulic control support unit；11st, claw assembly is supported；111st, keep
Frame；112nd, mobile slide block；113rd, flexible support bar group；1131st, flexible support bar；1132nd, fixed slide block；1133rd, scroll wheel；
1134th, first support bar；1135th, second support bar；12nd, supporting cylinder；121st, piston is supported；13rd, walking hydraulic cylinder；131、
Walking piston；14th, buffering hydraulic cylinder；141st, thrust piston；142nd, compression spring；143rd, end cap is buffered；3rd, hydraulic control assembled unit；
31st, reversal valve；4th, central canal.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Fig. 1 to Fig. 8 shows a kind of embodiment of the all-hydraulic oil well lower traction equipment of the present invention, the all-hydraulic oil
Down-hole traction apparatuss include the hydraulic control support unit 1 that hydraulic control assembled unit 3, central canal 4 and two groups are coaxially disposed, and hydraulic control combination is single
Unit 3 is arranged between two groups of hydraulic control support units 1 the fluid flow direction for being used to control in hydraulic control support unit 1, hydraulic control support unit 1
Including claw assembly 11, supporting cylinder 12, walking hydraulic cylinder 13 and buffering hydraulic cylinder 14 is supported, claw assembly 11 is supported to support
The support piston 121 of hydraulic cylinder 12 opens or shrinks when moving, and central canal 4 is arranged in successively in two groups of hydraulic control support units 1, and two
The walking piston 131 of group walking hydraulic cylinder 13 is fixedly connected with central canal 4, and it is remote that buffering hydraulic cylinder 14 is located at walking hydraulic cylinder 13
From one end of supporting cylinder 12 and with hydraulic control assembled unit 3 by oil communication, hydraulic control assembled unit 3 is arranged on two groups of hydraulic controls
The fluid flow direction being used between support unit 1 in the supporting cylinder 12 and walking hydraulic cylinder 13 for controlling hydraulic control support unit 1, two
The hydraulic control support unit 1 that group is coaxially disposed is arranged in front and back in well inwall, is respectively designated as front hydraulic control support unit 1a and rear liquid
Control support unit 1b, in the course of the work, first, the action of supporting cylinder 12 of front hydraulic control support unit 1a supports piston 121
It is mobile, make front support claw assembly 11 open locking well inwall, front walking hydraulic cylinder 13 action, walking piston 131 is moved, in promotion
Heart pipe 4 is moved forward relative to well inwall, and the pressure release of supporting cylinder 12 of rear hydraulic control support unit 1b makes rear support claw assembly 11
Shrink, afterwards walk the action of hydraulic cylinder 13, walking piston 131 move, after promotion hydraulic control support unit 1b relative to central canal 4 forward
It is mobile, when the walking piston 131 of current walking hydraulic cylinder 13 is moved to setting position, make the buffer of front hydraulic control support unit 1a
The action of cylinder pressure 14, realization is controlled supporting cylinder 12, walking hydraulic pressure in two groups of hydraulic control support units 1 by hydraulic control assembled unit 3
Oil-feed oil circuit and the oil return circuit of cylinder 13 changes, and now, the action of supporting cylinder 12 of rear hydraulic control support unit 1b is supported
Piston 121 is moved, and makes rear support claw assembly 11 open locking well inwall, and the action of hydraulic cylinder 13 of walking afterwards, walking piston 131 is moved
It is dynamic, promote central canal 4 to move forward relative to well inwall, shrink front support claw assembly 11, the walking of front walking hydraulic cylinder 13
Piston 131 promotes front hydraulic control support unit 1a to move forward relative to central canal 4, when after walk hydraulic cylinder 13 walking piston
131 when being moved to setting position, makes the action of buffering hydraulic cylinder 14 of rear hydraulic control support unit 1b, makes supporting cylinder 12, walking
Oil-feed oil circuit and the oil return circuit of hydraulic cylinder 13 changes again, so circulation, and two groups of hydraulic control support units 1 leapfrog,
Realize that all-hydraulic oil well lower traction equipment is integrally pushed ahead, buffering hydraulic cylinder 14 is set, can not only be in walking hydraulic cylinder 13
Walking piston 131 realize that hydraulic control assembled unit 3 is made in supporting cylinder 12, walking hydraulic cylinder 13 when being moved to setting position
Fluid commutates, moreover it is possible to reduces the impact of 131 pairs of walking hydraulic cylinder 13 ends of walking piston, makes all-hydraulic oil well lower traction equipment
Operation it is more steady, the all-hydraulic oil well lower traction equipment of the present invention, using hydraulic-driven, compared to most existing motor
Driving or the traction apparatuss of purely mechanic driving, this device pull strength is bigger, and gait of march is faster, of the invention on concrete structure
Oil downhole tractor adopts all-hydraulic control, and control system is simple, oil circuit reliability, the high temperature being suitable under oil well
The complex environment of high pressure, the reliability of work is high.
In the present embodiment, supporting cylinder 12, walking hydraulic cylinder 13 and buffering hydraulic cylinder 14 are coaxially disposed, buffering hydraulic cylinder
The thrust piston 141 of 14 actions of reversal valve 31 for including that hydraulic control assembled unit 3 can be controlled under the promotion of walking piston 131, with
As a example by front hydraulic control support unit 1a, the walking piston 131 of the walking hydraulic cylinder 13 of current hydraulic control support unit 1a moves to buffering
In hydraulic cylinder 14 during buffer area, the action of thrust piston 141 is promoted, because buffering hydraulic cylinder 14 passes through with hydraulic control assembled unit 3
Oil communication, because the action of reversal valve 31 of hydraulic control assembled unit 3 can be made, supports front hydraulic control support unit 1a and rear hydraulic control
The supporting cylinder 12 of unit 1b and the oil-feed oil circuit and oil return circuit of walking hydraulic cylinder 13 change, so as to realize next step
Action.
In the present embodiment, buffering hydraulic cylinder 14 also includes compression spring 142 and buffering end cap 143, and buffering end cap 143 is arranged
Hydraulic oil is offered on central canal 4 and on walking hydraulic cylinder 13 and the junction of buffering hydraulic cylinder 14, buffering end cap 143
Opening, thrust piston 141 is provided with push stopping part and one end passes through hydraulic oil opening and can contact with walking piston 131, separately
One side pressure located at compression spring 142 break-make of the first end to control hydraulic oil opening when mobile, the of compression spring 142
Two ends are fixedly installed.When the walking piston 131 of the walking hydraulic cylinder 13 of current hydraulic control support unit 1a moves to buffer area, push away
Dynamic thrust piston 141 overcomes the thrust of compression spring 142 and moves, and makes hydraulic oil opening circulate, the pressure oil of buffer area
The action of reversal valve 31 is triggered into buffering hydraulic cylinder 14, remaining time, due to the effect of compression spring 142, thrust piston 141 is not
Action, closes hydraulic oil opening, and reversal valve 31 is failure to actuate.
Support claw assembly 11 be arranged on supporting cylinder 12 away from walking hydraulic cylinder 13 one end, and with support piston 121
Connection, supports claw assembly 11 to include what retainer 111, mobile slide block 112 and the circumference along central canal 4 more than two were uniformly arranged
Flexible support bar group 113, retainer 111 is installed on the one end of casing wall away from walking hydraulic cylinder 13 of supporting cylinder 12,
Mobile slide block 112 is slidably set on central canal 4, and support bar group 113 includes flexible support bar 1131, fixed slide block
1132nd, scroll wheel 1133, first support bar 1134 and second support bar 1135, the one end of flexible support bar 1131 and mobile slide block
112 are hinged and the other end is installed on the one end of the casing wall of supporting cylinder 12 away from walking hydraulic cylinder 13, fixed slide block
1132 are installed on retainer 111, and the first end of first support bar 1134 is hinged with fixed slide block 1132, second support bar 1135
First end be hinged with piston 121 is supported, the second end of the end of first support bar 1,134 second and second support bar 1135 with rolling
Driving wheel 1133 is hinged, and scroll wheel 1133 is installed in the groove of the inner side of flexible support bar 1131.In the past hydraulic control support unit 1a was
Example, supports piston 121 to be moved to the left in 12 oil-feed of supporting cylinder, promotes second support bar 1135 to be moved to the left, and drives rolling
Driving wheel 1133 is moved in the groove of the inner side of flexible support bar 1131, due to first end and the fixed slide block of first support bar 1134
1132 are hinged, therefore, scroll wheel 1133 makes the axial movement that flexible support bar 1131 drives mobile slide block 112 along central canal 4, i.e.,
Realize opening for flexible support bar 1131.Arranging flexible support bar group 113 can increase support unit and borehole wall contact area,
Stiction when traction apparatuss are walked is improved, so as to increase the load capacity of whole traction apparatuss.Meanwhile, scroll wheel 1133 is set
The support of flexible support bar 1131 and reliability and the motility of contractive action can be effectively improved.In the present embodiment, in
The flexible support bar group 113 that the circumference of heart pipe 4 is uniformly arranged is three groups, improves and supports stablizing for the locking well inwall of claw assembly 11
Property.
In the present embodiment, the oil-feed of the supporting cylinder 12 of two groups of hydraulic control support units 1 is in opposite direction, and two groups of hydraulic controls are supported
The oil-feed of the walking hydraulic cylinder 13 of unit 1 is in opposite direction, during two groups of hydraulic control support units 1 are controlled by hydraulic control assembled unit 3
The oil-feed of supporting cylinder 12 and walking hydraulic cylinder 13 and oil return direction.
In the present embodiment, hydraulic control assembled unit 3 adopts integrated valve block, reduces the body of all-hydraulic oil well lower traction equipment
Product, and increase the reliability of hydraulic system.
Although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, in the case of without departing from technical solution of the present invention scope, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible variations and modification, or the Equivalent embodiments for being revised as equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (6)
1. a kind of all-hydraulic oil well lower traction equipment, it is characterised in that：Including hydraulic control assembled unit（3）, central canal（4）With two
The hydraulic control support unit that group is coaxially disposed（1）, the hydraulic control assembled unit（3）It is arranged on hydraulic control support unit described in two groups（1）
Between for controlling the hydraulic control support unit（1）In fluid flow direction, the hydraulic control support unit（1）Including support claw assembly
（11）, supporting cylinder（12）, walking hydraulic cylinder（13）And buffering hydraulic cylinder（14）, the support claw assembly（11）Can be described
Supporting cylinder（12）Support piston（121）Open or shrink when mobile, the central canal（4）It is arranged in successively described in two groups
Hydraulic control support unit（1）In, hydraulic cylinder of walking described in two groups（13）Walking piston（131）With the central canal（4）It is fixed
Connection, the buffering hydraulic cylinder（14）Positioned at the walking hydraulic cylinder（13）Away from the supporting cylinder（12）One end and with
The hydraulic control assembled unit（3）By oil communication, the hydraulic control assembled unit（3）It is arranged on hydraulic control support unit described in two groups
（1）Between for controlling the hydraulic control support unit（1）Supporting cylinder（12）With walking hydraulic cylinder（13）In fluid stream
To.
2. all-hydraulic oil well lower traction equipment according to claim 1, it is characterised in that：The supporting cylinder
（12）, walking hydraulic cylinder（13）And buffering hydraulic cylinder（14）It is coaxially disposed, the buffering hydraulic cylinder（14）Including can be in the row
Walk piston（131）Promotion under control the hydraulic control assembled unit（3）Reversal valve（31）The thrust piston of action（141）.
3. all-hydraulic oil well lower traction equipment according to claim 2, it is characterised in that：The buffering hydraulic cylinder（14）
Also include compression spring（142）With buffering end cap（143）, the buffering end cap（143）It is set in the central canal（4）Upper and position
In the walking hydraulic cylinder（13）And buffering hydraulic cylinder（14）Junction, the buffering end cap（143）On offer hydraulic oil
Opening, the thrust piston（141）Push stopping part and one end are provided with through the hydraulic oil opening and can be moved to most
The walking piston of end（131）Contact, another side pressure is located at the compression spring（142）First end with mobile time control
Make the break-make of the hydraulic oil opening, the compression spring（142）The second end be fixedly installed.
4. all-hydraulic oil well lower traction equipment according to any one of claim 1 to 3, it is characterised in that：Described
Support claw component（11）It is arranged on the supporting cylinder（12）Away from the walking hydraulic cylinder（13）One end and with the support
Piston（121）Connection.
5. all-hydraulic oil well lower traction equipment according to claim 4, it is characterised in that：The support claw assembly（11）
Including retainer（111）, mobile slide block（112）With more than two along the central canal（4）The flexibility that is uniformly arranged of circumference
Strut group（113）, the retainer（111）It is installed on the supporting cylinder（12）Casing wall away from the walking hydraulic pressure
Cylinder（13）One end, the mobile slide block（112）Slidably it is set in the central canal（4）On, the flexible support bar group
（113）Including flexible support bar（1131）, fixed slide block（1132）, scroll wheel（1133）, first support bar（1134）With second
Support bar（1135）, the flexible support bar（1131）One end and the mobile slide block（112）It is hinged and the other end fixes installing
In the supporting cylinder（12）Casing wall away from the walking hydraulic cylinder（13）One end, the fixed slide block（1132）Installing
In the retainer（111）On, the first support bar（1134）First end and the fixed slide block（1132）It is hinged, it is described
Second support bar（1135）First end and the support piston（121）It is hinged, the first support bar（1134）With second
Strut（1135）The second end with the scroll wheel（1133）It is hinged, the scroll wheel（1133）It is installed in the flexible support
Bar（1131）In the groove of inner side.
6. all-hydraulic oil well lower traction equipment according to any one of claim 1 to 3, it is characterised in that：Two groups of institutes
State hydraulic control support unit（1）Supporting cylinder（12）Oil-feed it is in opposite direction, hydraulic control support unit described in two groups（1）Walking
Hydraulic cylinder（13）Oil-feed it is in opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258671.3A CN106677732A (en) | 2016-12-30 | 2016-12-30 | All-hydraulic petroleum downhole traction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258671.3A CN106677732A (en) | 2016-12-30 | 2016-12-30 | All-hydraulic petroleum downhole traction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106677732A true CN106677732A (en) | 2017-05-17 |
Family
ID=58873281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611258671.3A Pending CN106677732A (en) | 2016-12-30 | 2016-12-30 | All-hydraulic petroleum downhole traction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106677732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387058A (en) * | 2017-08-21 | 2017-11-24 | 西南石油大学 | A kind of control system and method based on Microdrilling horizontal well continuous tubing drill machine people |
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| WO1998001651A1 (en) * | 1996-07-03 | 1998-01-15 | Ctes, L.C. | Wellbore tractor |
| US20080066963A1 (en) * | 2006-09-15 | 2008-03-20 | Todor Sheiretov | Hydraulically driven tractor |
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| CN202325334U (en) * | 2011-04-01 | 2012-07-11 | 西南石油大学 | Continuous oil pipe crawler |
| CN102808589A (en) * | 2012-08-16 | 2012-12-05 | 中国石油大学(北京) | Motor-driven underground tractor for coiled tubing |
| CN103174391A (en) * | 2012-09-17 | 2013-06-26 | 重庆科技学院 | Control system of coiled tubing underground tractor driven by electronic control hydraulic pressure |
| CN105649561A (en) * | 2016-03-10 | 2016-06-08 | 长江大学 | Coiled tubing tractor |
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2016
- 2016-12-30 CN CN201611258671.3A patent/CN106677732A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998001651A1 (en) * | 1996-07-03 | 1998-01-15 | Ctes, L.C. | Wellbore tractor |
| US20080066963A1 (en) * | 2006-09-15 | 2008-03-20 | Todor Sheiretov | Hydraulically driven tractor |
| CN101979830A (en) * | 2009-05-01 | 2011-02-23 | 普拉德研究及开发股份有限公司 | Force monitoring tractor |
| CN202325334U (en) * | 2011-04-01 | 2012-07-11 | 西南石油大学 | Continuous oil pipe crawler |
| CN102808589A (en) * | 2012-08-16 | 2012-12-05 | 中国石油大学(北京) | Motor-driven underground tractor for coiled tubing |
| CN103174391A (en) * | 2012-09-17 | 2013-06-26 | 重庆科技学院 | Control system of coiled tubing underground tractor driven by electronic control hydraulic pressure |
| CN105649561A (en) * | 2016-03-10 | 2016-06-08 | 长江大学 | Coiled tubing tractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387058A (en) * | 2017-08-21 | 2017-11-24 | 西南石油大学 | A kind of control system and method based on Microdrilling horizontal well continuous tubing drill machine people |
| CN107387058B (en) * | 2017-08-21 | 2020-09-04 | 西南石油大学 | Control system and method based on micro-borehole horizontal well coiled tubing drilling robot |
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Application publication date: 20170517 |