CN104775780B - Flexible connection type downhole instrument tractor - Google Patents
Flexible connection type downhole instrument tractor Download PDFInfo
- Publication number
- CN104775780B CN104775780B CN201510115562.5A CN201510115562A CN104775780B CN 104775780 B CN104775780 B CN 104775780B CN 201510115562 A CN201510115562 A CN 201510115562A CN 104775780 B CN104775780 B CN 104775780B
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- Prior art keywords
- tractor
- housing
- downhole instrument
- support arm
- heart axle
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- 230000008878 coupling Effects 0.000 claims description 36
- 238000010168 coupling process Methods 0.000 claims description 36
- 238000005859 coupling reaction Methods 0.000 claims description 36
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009738 saturating Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
-
- 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
- E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a flexible connection type downhole instrument tractor which comprises an anchor assembly and a tractor assembly which are connected front and back, wherein flexible cables penetrate through the anchor assembly and the tractor assembly, and one ends of the flexible cables are electrically connected with a tractor control device; the anchor assembly comprises a first shell, an anchor slip and a driving wheel set are arranged on the first shell, a first through hole is formed in the rear end of the first shell, a fixed hole seat is formed in the rear end of the interior of the first shell, and the flexible cable penetrates through the first through hole and is fixedly connected to the fixed hole seat; the retractor assembly comprises a second shell, a second through hole is formed in the front end of the second shell, a cable arranging device is arranged at the front end inside the second shell, and the flexible cable penetrates through the second through hole and is wound on the cable arranging device. The flexible connection type underground instrument tractor has the characteristics of strong adaptability to the pipe diameter of a test well, high safety, accurate positioning, simple structure, low cost and convenience in maintenance.
Description
Technical field
It is the present invention relates to petroleum well logging technology field more particularly to a kind of suitable for tester conveying under Horizontal Well
The formula that is flexible coupling downhole instrument tractor.
Background technology
Current each elephant all takes much count of the exploitation of horizontal well, because horizontal well production is big, the typically 3-5 of straight well yield
Times, take effect quickly, but well logging after horizontal well drilling and the test problem after production are also increasingly highlighted.Because horizontal well is complete
Net horizontal section and Horizon after well are in parastate, and decentralization of the tester in oil well relies primarily on cable and self gravitation,
When reaching net horizontal section, how reliably and securely instrument cannot move on, it is necessary to get to precalculated position by external force,
Tester is transported to test purpose position so as to realize the full well section test of horizontal well, the key as restriction horizontal well development
Problem.
Country's horizontal well tester mode of movement can be divided into tubular column carrying conveying and crawl device conveying at present.In tubing string
In portable type mode of movement, realize for tester delivering to test purpose position using tubing string, this mode is to borehole wall ID
Adaptability is poor, and Oil/gas Well well is not regular enough in some well sections, thereby increases and it is possible to there is the well of different-diameter in same well
Section, leads to not for tester to deliver to test purpose position.
In crawl device mode of movement, it is known that propeller technology of creeping have《Oil instrument》In August, 2009 prints page 28
The SmarTract companies of introduction announce what is released in the tractor of production in 2000 and Schlumberger in June, 2003
MaxTRAC type intelligent water horizontal well tractors, above two traction propeller drives tractor to be conveyed using special motor,
Its complex structure, involve great expense.At present using the more wheeled crawl device that also has, wheeled crawl device can produce local damage to sleeve pipe
Wound, and leaping over obstacles ability, casing deformation, shake out or greasy dirt occur when cannot advance.
Thus, the present inventor relies on and is engaged in the experience of relevant industries and practice for many years, proposes that one kind is flexible coupling formula downhole instrument
Device tractor, to overcome the defect of prior art.
The content of the invention
It is flexible coupling formula downhole instrument tractor it is an object of the invention to provide one kind, to realize horizontal downhole tester
Device is accurately transported to net horizontal section target location, completes the purpose of the full well section test of horizontal well, and the formula downhole instrument that is flexible coupling leads
Lead device has to testing well caliber strong adaptability, safe, accurate positioning, simple structure, low cost, spy easy to maintenance
Point.
The object of the present invention is achieved like this, and one kind is flexible coupling formula downhole instrument tractor, including preceding latter linked anchor
Determine device assembly and traction device assembly, the anchor assembly and tractor component internal run through flexible cable, the flexible cable one
End is electrically connected to tractor control device；
The anchor assembly includes the first housing of closed at both ends, and energy radial expansion is provided with first housing
Grappling slips, first enclosure interior is provided with the slips control system being connected with the grappling slips, the slips control
Electrically connected between system and flexible cable；Be additionally provided with drive wheel group on first housing, the drive wheel group be located at first
First motor connection of enclosure interior, electrically connects between first motor and flexible cable；The first housing rearward end is provided with
First via, the first enclosure interior rear end is provided with fixed hole seat, and the flexible cable is through the first via and is fixedly connected on
On the fixed hole seat；Second housing of the traction device assembly including closed at both ends, the second housing leading section is provided with the
Two vias, the second enclosure interior front end is provided with cable-remover, and the flexible cable is through the second via and is wound in the row
On cable device, the cable-remover rear is connected with the second motor, is electrically connected between second motor and flexible cable.
In a better embodiment of the invention, the grappling slips includes fastener, fastener inner side connection
There is the First piston bar that the fastener can be driven to move radially, it is close that the First piston bar other end sealing is arranged in one first
In envelope cavity, the first annular seal space body is located at the first enclosure interior, is provided with first housing for the first piston
The first through groove that bar is passed through；The slips control system includes the first hydraulic pump, and first hydraulic pump passes through pipeline and first
Seal cavity is connected, and described first hydraulic pump one end is connected with the first control valve, electricity between the first control valve and flexible cable
Connection.
In a better embodiment of the invention, the drive wheel group includes circumferential symmetrically arranged multiple driving wheels,
Each driving wheel center is provided with the first heart axle, and first support arm and second support arm, described are connected with first heart axle
The second through groove that is radially unfolded for first support arm and second support arm or withdrawing, the lower end of the first support arm are provided with one housing
The first sliding block that can be axially moveable is articulated with, first slip front is connected with first support arm control system；Described second
The lower end of support arm and first motor connection.
In a better embodiment of the invention, first slip front is connected with can drive the first sliding block axially to move
Dynamic second piston bar, the other end sealing of the second piston bar is arranged in one second seal cavity, the first support arm
Control system includes the second hydraulic pump, and second hydraulic pump is connected by pipeline with the second seal cavity, second hydraulic pressure
Pump one end is connected with the second control valve, is electrically connected between the second control valve and flexible cable.
In a better embodiment of the invention, the second support arm includes the 3rd housing, the 3rd enclosure interior
Gear train is provided with, the gear train includes multiple pitch wheels, and the first gear positioned at gear train upper end is sheathed on
On first heart axle, the second heart axle is provided with positioned at the second gear center of gear train lower end, described second heart axle one end passes through
3rd housing, the 3rd gear is arranged with the second heart axle of the 3rd hull outside；First motor center
Third spindle is provided with, the first engaging piece is provided with the third spindle, first engaging piece and the engagement of the 3rd gear connect
Connect.
In a better embodiment of the invention, the second support arm can also be driving-chain or conveyer belt, described
The upper end of driving-chain or conveyer belt is sheathed on first heart axle, and the lower end of the driving-chain or conveyer belt is provided with the 4th
Heart axle, the 4th gear is arranged with the 4th heart axle；First motor center is provided with the 5th heart axle, the 5th heart axle
On be provided with the second engaging piece, second engaging piece and the engagement connection of the 4th gear.
In a better embodiment of the invention, second housing rear end is connected with rolling wheel centralizer.
In a better embodiment of the invention, first housing forward end is connected with guide head.
In a better embodiment of the invention, the guide head front end is provided with the first outer cone of diameter tapers forward
Face.
In a better embodiment of the invention, first housing rear end is provided with diameter backward outside tapered second
The conical surface；Second housing forward end is provided with the 3rd male cone (strobilus masculinus) of diameter tapers forward.
From the above mentioned, the formula downhole instrument tractor that is flexible coupling that the present invention is provided has the advantages that：
(1) to testing well caliber strong adaptability, safe, accurate positioning：The formula downhole instrument that is flexible coupling that the present invention is provided
Device tractor carries out firm positioning using anchor slips and horizontal well tube wall, and stretching out for grappling slips is determined according to actual caliber
Length, strong adaptability；Reduce the abrasion of be flexible coupling formula downhole instrument tractor and tube wall using rolling wheel centralizer, it is safe；
Control device is connected with each structure, is controlled by ground control program, accurate positioning；
(2) simple structure, low cost is easy to maintenance：What the present invention was provided is flexible coupling formula downhole instrument tractor using row
Cable device realizes the folding and unfolding of flexible cable, and then completes the advance of the whole formula downhole instrument tractor that is flexible coupling；Motor need not be customized, into
This is relatively low；Each structure is connected by flexible cable, and simple structure is easy to maintenance.
Brief description of the drawings
The following drawings is only intended to, in schematic illustration and explanation is done to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：It is the structural representation of the formula downhole instrument tractor that is flexible coupling of the invention.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now control illustrates this hair
Bright specific embodiment.
As shown in figure 1, the formula downhole instrument tractor 100 that is flexible coupling that the present invention is provided, including preceding latter linked anchor
, through there is flexible cable 3, the one end of flexible cable 3 is electrically connected for component 1 and traction device assembly 2, anchor assembly 1 and the inside of traction device assembly 2
It is connected to tractor control device (prior art, figure not shown in)；Anchor assembly 1 includes the first housing 11 of closed at both ends,
The grappling slips 12 of energy radial expansion is provided with first housing 11, the first housing 11 is internally provided with and is connected with grappling slips 12
Slips control system 13, electrically connected between slips control system 13 and flexible cable 3, in the present embodiment, grappling slips 12
Including fastener 121, the inner side of fastener 121 is connected with the First piston bar 122 that the fastener can be driven to move radially, first
The sealing of the other end of piston rod 122 is arranged in first annular seal space body 123, and first annular seal space body 123 is located inside the first housing 11,
The first through groove 113 for the First piston bar 122 movement is provided with first housing 11, the quantity of grappling slips 12 is circumferential
Symmetrical multiple；Slips control system 13 includes the first hydraulic pump 131, and the first hydraulic pump 131 passes through pipeline and first annular seal space
Body 123 is connected, and the one end of the first hydraulic pump 131 is connected with the first control valve 132, is electrically connected between the first control valve 131 and flexible cable
Connect.
Drive wheel group 14, drive wheel group 14 and the first electricity being located inside the first housing 11 are additionally provided with first housing 11
Machine 15 is connected, and is electrically connected between the first motor 15 and flexible cable 3, and in the present embodiment, drive wheel group 14 includes circumferential symmetrical
Multiple driving wheels 141 of setting, the center of each driving wheel 141 is provided with the first heart axle 142, and first is connected with the first heart axle 142
Support arm 143 and second support arm 144, are provided with radially unfolded for first support arm 143 and second support arm 144 or receive on the first housing 11
The second through groove 114 returned, the lower end of first support arm 143 is articulated with the first sliding block 145 that can be axially moveable, the first sliding block 145
Front end is connected with first support arm control system 146；The lower end of second support arm 144 is connected with the first motor 15.
The rearward end of first housing 11 is provided with the first via 111, and the Internal back end of the first housing 11 is provided with fixed hole seat 112, soft
Cable 3 is through the first via 111 and is fixedly connected on the fixed hole seat 112；Traction device assembly 2 includes the of closed at both ends
Two housings 21, the leading section of the second housing 21 is provided with the second via 211, and the interior forward end of the second housing 21 is provided with cable-remover 22, soft
Cable 3 is through the second via 211 and is wound on cable-remover 22, in the present embodiment, is wound in the soft electricity on cable-remover 22
The freedom length of cable is 10 meters；The rear of cable-remover 22 is connected with the second motor 23, is electrically connected between the second motor 23 and flexible cable 3
Connect.The folding and unfolding of flexible cable is realized by cable-remover 22, and then completes the advance of the whole formula downhole instrument tractor 100 that is flexible coupling.
Further, the front end of the first sliding block 145 is connected with the second piston bar 147 that the first sliding block can be driven to move axially, the
The other end sealing of two piston rods 147 is arranged in the second seal cavity 148, and first support arm control system 146 includes the second liquid
Press pump 1461, the second hydraulic pump 1461 is connected by pipeline with the second seal cavity 148, and the one end of the second hydraulic pump 1461 is connected with
Second control valve 1462, electrically connects between the second control valve 1462 and flexible cable.
In one embodiment of this invention, second support arm 144 includes the 3rd housing 1441, and the inside of the 3rd housing 1441 is set
There is gear train 1442, gear train 1442 includes intermeshing multiple gears, positioned at the first gear set of the upper end of gear train 1442
On the first heart axle 142, the second heart axle 1443, the second heart axle are provided with positioned at the second gear center of the lower end of gear train 1442
1443 one end pass through the 3rd housing 1441, and the 3rd gear is arranged with second heart axle 1443 in the outside of the 3rd housing 1441
1444；First motor 15 is provided centrally with third spindle 151, and the first engaging piece 1511 is provided with third spindle 151, and first nibbles
Conjunction portion 1511 and the engagement connection of the 3rd gear 1444.
In another embodiment of the invention, second support arm 144 is driving-chain or conveyer belt, driving-chain or conveyer belt
Upper end be sheathed on the first heart axle 142, the lower end of driving-chain or conveyer belt is provided with the 4th heart axle, is arranged with the 4th heart axle
4th gear；First motor 15 is provided centrally with the 5th heart axle, is provided with the second engaging piece on the 5th heart axle, the second engaging piece and
The engagement connection of 4th gear.
In order to reduce the friction of be flexible coupling formula downhole instrument tractor 100 and horizontal well tube wall, robust motion is improved, the
The rear end of two housing 21 is connected with rolling wheel centralizer 24, and the rear end of rolling wheel centralizer 24 is connected with downhole instrument 4.
In order to reduce the resistance during the formula downhole instrument tractor 100 that is flexible coupling advances, the connection of the front end of the first housing 11
There is guide head 16, in the present embodiment, the front end of guide head 16 is provided with the first male cone (strobilus masculinus) of diameter tapers forward；Meanwhile, the
The rear end of one housing 11 is provided with the second tapered backward male cone (strobilus masculinus) of diameter, and the front end of the second housing 21 is provided with diameter tapers forward
3rd male cone (strobilus masculinus).
When the formula downhole instrument tractor 100 that is flexible coupling of present invention offer works, first by downhole instrument 4 and idler wheel centralizing
The rear end of device 24 is connected, and rolling wheel centralizer 24 is in open configuration, and flexible cable 3 is electrically connected with control device, and the free segment of flexible cable 3 is complete
Portion is wrapped on cable-remover 22, and cable-remover 22 is in lockup state, and the first housing 11 is abutted with the second housing 21, grappling card
Watts 12 and drive wheel group 14 be in retracted state.In instrument decentralization process, vertical well section is by the formula downhole instrument tractor that is flexible coupling
100 deadweight decentralizations, when the larger well section of gradient is transferred to, control cable-remover 22 to unlock, by first support arm by control device
Control system 146 struts first support arm 143, and after each driving wheel 141 is contacted with the borehole wall, first support arm control system 146 stops
Work, starts the first motor 15, drives each driving wheel 141 to be rotationally advancing, flexible cable 3 travel forward with anchor assembly 1 and
Elongation, when advancing close to maximum freedom length, the first motor 15 stops driving；Meanwhile, control device control slips control
System 13 so that the fastener 121 of grappling slips 12 extends radially out clamping to the borehole wall, now by first support arm control system
146 withdraw first support arm 143, and each driving wheel 141 is radially withdrawn；Afterwards, the second motor 23 is started, control cable-remover 22 reclaims soft
Cable 3, traction device assembly 2 and downhole instrument 4 advance with the recovery of flexible cable 3, until the free segment of flexible cable 3 all withdraws
It is wound on cable-remover 22, now, the fastener 121 of grappling slips 12 is withdrawn by controlling slips control system 13；Then, then
It is secondary that first support arm 143 is strutted by first support arm control system 146, into subsequent work circulation.So circulation is gone down, until will
Downhole instrument 4 is drawn to specified location, and then the formula downhole instrument tractor 100 that is flexible coupling is returned to the state of firm decentralization, on
Portable cable carries out the admission of log parameter, and well logging continues above to carry flexible cable 3 after finishing will be flexible coupling formula downhole instrument tractor 100
Take out ground.
From the above mentioned, the formula downhole instrument tractor that is flexible coupling that the present invention is provided has the advantages that：
(1) to testing well caliber strong adaptability, safe, accurate positioning：The formula downhole instrument that is flexible coupling that the present invention is provided
Device tractor carries out firm positioning using anchor slips and horizontal well tube wall, and stretching out for grappling slips is determined according to actual caliber
Length, strong adaptability；Reduce the abrasion of be flexible coupling formula downhole instrument tractor and tube wall using rolling wheel centralizer, it is safe；
Control device is connected with each structure, is controlled by ground control program, accurate positioning；
(2) simple structure, low cost is easy to maintenance：What the present invention was provided is flexible coupling formula downhole instrument tractor using row
Cable device realizes the folding and unfolding of flexible cable, and then completes the advance of the whole formula downhole instrument tractor that is flexible coupling；Motor need not be customized, into
This is relatively low；Each structure is connected by flexible cable, and simple structure is easy to maintenance.
Schematical specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, done equivalent variations and modification on the premise of design of the invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (10)
1. one kind is flexible coupling formula downhole instrument tractor, it is characterised in that：The formula downhole instrument tractor that is flexible coupling includes preceding
Latter linked anchor assembly and traction device assembly, the anchor assembly and tractor component internal run through flexible cable, institute
State flexible cable one end and be electrically connected to tractor control device；
The anchor assembly includes the first housing of closed at both ends, and the grappling of energy radial expansion is provided with first housing
Slips, first enclosure interior is provided with the slips control system being connected with the grappling slips, the slips control system
Electrically connected between flexible cable；Be additionally provided with drive wheel group on first housing, the drive wheel group be located at the first housing
The first internal motor connection, electrically connects between first motor and flexible cable；The first housing rearward end is provided with first
Via, the first enclosure interior rear end is provided with fixed hole seat, and the flexible cable is through the first via and is fixedly connected on described
On fixed hole seat；The traction device assembly includes the second housing of closed at both ends, and the second housing leading section is provided with the second mistake
Hole, the second enclosure interior front end is provided with cable-remover, and the flexible cable is through the second via and is wound in the cable-remover
On, the cable-remover rear is connected with the second motor, is electrically connected between second motor and flexible cable.
2. be flexible coupling formula downhole instrument tractor as claimed in claim 1, it is characterised in that：The grappling slips includes locking
Portion, the fastener inner side is connected with the First piston bar that the fastener can be driven to move radially, and the First piston bar is another
One end sealing is arranged in a first annular seal space body, and the first annular seal space body is located at the first enclosure interior, first housing
On be provided with the first through groove passed through for the First piston bar；The slips control system includes the first hydraulic pump, described the
One hydraulic pump is connected by pipeline with first annular seal space body, and described first hydraulic pump one end is connected with the first control valve, described
Electrically connected between one control valve and flexible cable.
3. be flexible coupling formula downhole instrument tractor as claimed in claim 1, it is characterised in that：The drive wheel group includes circumferential
Symmetrically arranged multiple driving wheels, each driving wheel center is provided with the first heart axle, and first is connected with first heart axle
Support arm and second support arm, be provided with first housing for first support arm and second support arm it is radially unfolded or withdraw it is second saturating
Groove, the lower end of the first support arm is articulated with the first sliding block that can be axially moveable, and first slip front is connected with first
Support arm control system；The lower end of the second support arm and first motor connection.
4. be flexible coupling formula downhole instrument tractor as claimed in claim 3, it is characterised in that：The first slip front connection
There is the second piston bar that the first sliding block can be driven to move axially, to be arranged in one second close for the other end sealing of the second piston bar
In envelope cavity, the first support arm control system includes the second hydraulic pump, and second hydraulic pump is by pipeline and the second sealing
Cavity is connected, and described second hydraulic pump one end is connected with the second control valve, is electrically connected between the second control valve and flexible cable.
5. be flexible coupling formula downhole instrument tractor as claimed in claim 4, it is characterised in that：The second support arm includes the 3rd
Housing, the 3rd enclosure interior is provided with gear train, and the gear train includes multiple pitch wheels, positioned at gear train
The first gear of upper end is sheathed on first heart axle, and the second heart axle is provided with positioned at the second gear center of gear train lower end,
Described second heart axle one end passes through the 3rd housing, and the 3rd tooth is arranged with the second heart axle of the 3rd hull outside
Wheel；First motor center is provided with third spindle, and the first engaging piece, first engagement are provided with the third spindle
Portion and the engagement connection of the 3rd gear.
6. be flexible coupling formula downhole instrument tractor as claimed in claim 4, it is characterised in that：The second support arm can also be
The upper end of driving-chain or conveyer belt, the driving-chain or conveyer belt is sheathed on first heart axle, the driving-chain or
The lower end of person's conveyer belt is provided with the 4th heart axle, and the 4th gear is arranged with the 4th heart axle；First motor center is set
There is the 5th heart axle, the second engaging piece, second engaging piece and the engagement connection of the 4th gear are provided with the 5th heart axle.
7. be flexible coupling formula downhole instrument tractor as claimed in claim 1, it is characterised in that：The second housing rear end connection
There is rolling wheel centralizer.
8. be flexible coupling formula downhole instrument tractor as claimed in claim 1, it is characterised in that：The first housing forward end connection
There is guide head.
9. be flexible coupling formula downhole instrument tractor as claimed in claim 8, it is characterised in that：The guide head front end is provided with
First male cone (strobilus masculinus) of diameter tapers forward.
10. be flexible coupling formula downhole instrument tractor as claimed in claim 1, it is characterised in that：First housing rear end sets
It is equipped with the second tapered backward male cone (strobilus masculinus) of diameter；Second housing forward end is provided with the 3rd male cone (strobilus masculinus) of diameter tapers forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115562.5A CN104775780B (en) | 2015-03-17 | 2015-03-17 | Flexible connection type downhole instrument tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115562.5A CN104775780B (en) | 2015-03-17 | 2015-03-17 | Flexible connection type downhole instrument tractor |
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| Publication Number | Publication Date |
|---|---|
| CN104775780A CN104775780A (en) | 2015-07-15 |
| CN104775780B true CN104775780B (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510115562.5A Active CN104775780B (en) | 2015-03-17 | 2015-03-17 | Flexible connection type downhole instrument tractor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952404A (en) * | 2016-06-22 | 2016-09-21 | 西安石油大学 | Hydraulically driven alternative telescopic coiled tubing traction apparatus |
| NO344461B1 (en) * | 2017-07-06 | 2019-12-23 | Well Conveyor As | Pulling tool used in a borehole and / or pipeline and a drive module for a pulling tool |
| CN108915666A (en) * | 2018-06-01 | 2018-11-30 | 中国北方车辆研究所 | A kind of oilfield horizontal well mixed traction device |
| CN110894902B (en) * | 2019-12-31 | 2021-10-22 | 中国人民解放军92578部队 | A telescopic crawling robot in a pneumatic tube |
| CN111980612A (en) * | 2020-09-02 | 2020-11-24 | 西安石油大学 | Slip mechanism for downhole choke |
| CN113483673B (en) * | 2021-07-12 | 2024-01-26 | 中国石油化工股份有限公司 | Automatic oil pipe detection diameter device |
| CN114046395B (en) * | 2021-11-19 | 2023-04-28 | 北京环鼎科技有限责任公司 | Modularized crawler |
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| CN201106445Y (en) * | 2007-11-20 | 2008-08-27 | 中国石油天然气集团公司 | Reducing tow device for casing horizontal well logging dragging device |
| CN102518407A (en) * | 2012-01-05 | 2012-06-27 | 西南石油大学 | Cable type underground axial force generating device |
| CN104373069A (en) * | 2014-11-04 | 2015-02-25 | 中国石油天然气股份有限公司 | Propeller type downhole instrument propeller |
| CN204627481U (en) * | 2015-03-17 | 2015-09-09 | 中国石油天然气股份有限公司 | Flexible connection type downhole instrument tractor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080066963A1 (en) * | 2006-09-15 | 2008-03-20 | Todor Sheiretov | Hydraulically driven tractor |
| US7516782B2 (en) * | 2006-02-09 | 2009-04-14 | Schlumberger Technology Corporation | Self-anchoring device with force amplification |
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| CN201106445Y (en) * | 2007-11-20 | 2008-08-27 | 中国石油天然气集团公司 | Reducing tow device for casing horizontal well logging dragging device |
| CN102518407A (en) * | 2012-01-05 | 2012-06-27 | 西南石油大学 | Cable type underground axial force generating device |
| CN104373069A (en) * | 2014-11-04 | 2015-02-25 | 中国石油天然气股份有限公司 | Propeller type downhole instrument propeller |
| CN204627481U (en) * | 2015-03-17 | 2015-09-09 | 中国石油天然气股份有限公司 | Flexible connection type downhole instrument tractor |
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| CN104775780A (en) | 2015-07-15 |
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