CN208743947U - A kind of docking of coiled tubing and detection Information Mobile Service vehicle - Google Patents
A kind of docking of coiled tubing and detection Information Mobile Service vehicle Download PDFInfo
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- CN208743947U CN208743947U CN201820768832.1U CN201820768832U CN208743947U CN 208743947 U CN208743947 U CN 208743947U CN 201820768832 U CN201820768832 U CN 201820768832U CN 208743947 U CN208743947 U CN 208743947U
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- coiled tubing
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Abstract
The utility model discloses a kind of docking of coiled tubing and detection Information Mobile Service vehicles, including car body (1), workbench (2) are equipped on the car body (1), it is successively arranged the first supporting and positioning device (a1), coalignment (7), welding pairing device (3), the second supporting and positioning device (a2), detection device (4), third supporting and positioning device (a3) on the workbench (2), is additionally provided with generating equipment (5) and hydraulic station (6) on the car body (1).
Description
Technical field
The utility model relates to a kind of coiled tubing the service of connection devices, especially a kind of coiled tubing docks detection service vehicle.
Background technique
Coiled tubing is often used in oil field open air, but in the limited length of coiled tubing, in actual use
It being frequently necessary to carry out to increase length is fetched, traditional docking transports welding machine to scene, then artificial field conduct welding, but
It is due to there is no a professional equipment, difficulty is larger when butt welding, and not only to increasing labour, but also efficiency is not also high, equipment fortune
It is defeated also highly inconvenient.
Utility model content
In order to solve deficiency in the prior art, a kind of dock for coiled tubing is provided and is detected, work efficiency is high, mobile
Property good coiled tubing dock servicer, the technical scheme adopted by the utility model is
A kind of docking of coiled tubing and detection Information Mobile Service vehicle, including car body, are equipped with workbench on the car body,
The first supporting and positioning device, coalignment, welding pairing device, the second support positioning are successively arranged on the workbench
Device, detection device, third supporting and positioning device, are additionally provided with generating equipment and hydraulic station on the car body.
First supporting and positioning device, the second supporting and positioning device are identical wrapped with third supporting and positioning device structure
Pedestal is included, horizontal clamping device and vertical clamping device are equipped on the pedestal, the horizontal clamping device includes one
To movable support, it is equipped with vertical rod on each movable support, is equipped with and can drive in each movable support bottom
The horizontal lead screw that movable support moves in the horizontal direction, the vertical clamping device includes mounting rack, in the mounting rack
Lower part is fixed with the first sleeping rod, is hinged with crossbeam on the mounting rack top, and being equipped on the crossbeam can be along crossbeam
The down-feed screw of lower movement is equipped in the down-feed screw end with the movable mounting rail of down-feed screw, described
Mounting rail is equipped with the second sleeping rod with the first sleeping rod cooperation, is equipped at the top of the mounting rack far from crossbeam hinged place one end
The snap close piece of fixed cross beam.
A pair of of slide guide column is equipped on the crossbeam, the mounting rail is slidably arranged on slide guide column.
The coalignment includes fixed frame, and sliding is equipped with runing rest, the rotation on the fixing frame
Bracket includes the carrier of two arc guide rail framves of a pair of of arc guide rail frame and connection, is equipped with driving rotation on the fixing frame
The hydraulic motor for turning holder pivots is fixed with alignment oil cylinder on the carrier, is equipped in described alignment oil cylinder one end
The alignment head for acting on coiled tubing is further fixed on a pair of of path transfer frame on the carrier, on each path transfer frame
Equipped with one group of symmetrically arranged adjustment hole, it is equipped between the path transfer frame and cooperates path transfer roller, the path transfer with alignment head
Roller is fixed on adjustment hole.
It is provided with bearing on the fixing frame, guide runner, the bearing are equipped on the arc guide rail frame
It is placed in guide runner, the gear of driving runing rest rotation is equipped in the hydraulic motor output end, ipsilateral with gear
Arc guide rail frame surface is equipped with the teeth face cooperated with gear.
Welding pairing device includes the identical clamping device of symmetrically arranged a pair of of structure, and the clamping device includes
Support underframe is equipped with X-axis on the support underframe and pushes hydraulic cylinder, and sliding is provided with energy edge on the support underframe
The mobile middle seat of horizontal direction, the middle seat bottom push hydraulic cylinder free end to connect, are arranged on the middle seat with X-axis
There is Z axis to push hydraulic cylinder, pushes hydraulic cylinder free end to be equipped with footstock in the Z axis, slide guide is equipped on the middle seat
Cylinder is equipped with the slide guide bar cooperated with slide guide cylinder on the footstock；It is equipped with Y-axis on the footstock and pushes hydraulic cylinder,
The Y-axis pushes hydraulic cylinder free end to be connected with top plate, and guide rail is equipped on the footstock, is equipped on the top plate
Rail is embraced along guide rail sliding, stationary fixture and fixed chuck are equipped on the top plate, the fixation chuck includes chuck
Bracket sets the activity there are four can move alone movable jaw in cross arrangement on the chuck bracket
Claw includes adjusting screw rod and the clip that adjusting screw rod end is arranged in, and each clip section is arc-shaped and can combine
At tubulose；The stationary fixture includes clamping fixture seat, and clamping plate is hinged on clamping fixture seat, equipped with strap on clamping fixture seat
Fastener is equipped with the holding tank of clamping pipeline between the clamping plate and clamping fixture seat.
The workbench includes fixed platform and rotatable platform, the rotatable platform hingedly on the stationary platform,
It is fixed with toothed disc in the rotatable platform bottom, the driving electricity of drive gear disk rotation is equipped in the fixed platform
Machine is equipped with lifting apparatus in the fixed platform bottom, and the lifting apparatus includes arm support, the arm support
It is respectively hinged on car body and fixed platform in ipsilateral one end, the arm support slides respectively relative to hinged one end
It is arranged on car body and fixed platform, driving arm support is equipped on the arm support along the movable liquid of cross-articulation point
Cylinder pressure.
The arm support is a pair of along fixed platform center symmetric setting.
The detection device is full tube body leakage magnetic detection device.
It is welded using coiled tubing recited above docking and detection service vehicle due to being provided with coalignment on the car body
Pairing device, positioning device and detection device are connect, can realize that pipeline is straightened on the servicer, positioning docking and inspection
It surveys, is able to achieve mechanized operation, and mobility is good, be adapted to various field works, reduce labor intensity and work effect
Rate is high.
Detailed description of the invention
Fig. 1 is the utility model servicer structural schematic diagram；
Fig. 2 is supporting and positioning device structural side view；
Fig. 3 is supporting and positioning device structural front view；
Fig. 4 is supporting and positioning device structure top view；
Fig. 5 is coalignment side view；
Fig. 6 is coalignment main view；
Fig. 7 is clamping device main view；
Fig. 8 is clamping device side view；
Fig. 9 is fixed chuck structure schematic diagram；
Figure 10 is workbench use state diagram；
Figure 11 is workbench original state schematic diagram；
Specific embodiment
The coiled tubing servicer as shown in Figure 1 includes car body 1, and car body 1 is traditional truck, is equipped on car body 1
Workbench 2 is successively arranged the first supporting and positioning device a1, coalignment 7, welding pairing device 3, the on workbench 2
Two supporting and positioning device a2, detection device 4, third supporting and positioning device a3 are additionally provided with generating equipment 5 and hydraulic on car body 1
Stand 6.Wherein workbench 2 can go up and down and rotate, and implement the change adapted to, energy according to the position of place demand and coiled tubing
Enough ensure going on smoothly for work on the spot for different places, the first supporting and positioning device a1, the second supporting and positioning device a2 with
And third supporting and positioning device a3 is swung for restriction conduit, is transmitted pipeline on servicer according to certain scope of activities and is implemented
Docking has deformation to be needed before docking through coalignment 7 to continuous oil when unloading from retractable volume due to continuous conduit
Pipe is straightened, and the coiled tubing after alignment is more easily aligned welding, the company that two can be needed to dock by welding pairing device 3
Continuous oil pipe clamps and carries out position adjusting so that two oil pipe docking location alignments, also set up 4 energy of detection device on the car body
Detection directly enough is carried out to the position after coiled tubing welding and judges whether welding is qualified, so after docking detection vehicle
Coiled tubing can direct plunge into use substantially, pile line operation saves labour and improves production efficiency.
It is as shown in Figures 2 to 4 the first supporting and positioning device a1, the second supporting and positioning device a2 and third support positioning
Device a3 structural schematic diagram, these three support device structures are all the same, including pedestal 1-1, are equipped on pedestal 1-1: limitation connects
The horizontal clamping device 1-2 of continuous oil pipe horizontal anomalous movement, limits the movable vertical clamping device 1-3 of coiled tubing vertical direction.Water
Flat clamping device 1-2 includes a pair of of movable support 1-21, and vertical rod 1-22 is equipped on each movable support 1-21, in each activity branch
The bottom frame 1-21 is equipped with the horizontal lead screw 1-23 that movable support 1-21 can be driven to move in the horizontal direction, passes through horizontal lead screw 1-
23 adjustings can adjust the position of the scope of activities of coiled tubing and coiled tubing in the horizontal direction in horizontal direction, vertically
Clamping device 1-3 includes mounting rack 1-31, the first sleeping rod 1-32 is fixed in the lower part mounting rack 1-31, on the top mounting rack 1-31
It is hinged with crossbeam 1-33, being equipped on crossbeam 1-33 can be along the down-feed screw 1-34 that crossbeam 1-33 is moved up and down, in down-feed screw
The end 1-34 is equipped with the movable mounting rail 1-35 of down-feed screw 1-34, is equipped with and the first sleeping rod 1- on mounting rail 1-35
Second sleeping rod 1-36 of 32 cooperations, the first sleeping sleeping rod 1-36 of rod 1-32 and second can limit coiled tubing in vertical direction
Scope of activities, is equipped with a pair of of slide guide column 1-38 on crossbeam 1-33, and mounting rail 1-35 is slidably arranged on slide guide column 1-38, passes through
It adjusts down-feed screw 1-34 and controls the distance of the first sleeping sleeping rod 1-36 of rod 1-32 and second to control coiled tubing in vertical direction
On scope of activities, at the top of mounting rack 1-31 far from the hinged place crossbeam 1-33 one end be equipped with fixed cross beam 1-33 snap close piece 1-
37, open snap close piece 1-37 can turning beam 1-33, due to being opened at the top of the vertical rod 1-22 of two on horizontal clamping device 1-2
It puts, opening-wide state will be also at the top of clamping device 1-3 vertical after crossbeam 1-33 overturning, coiled tubing is put into clamping dress in this way
It is more convenient when setting, only need to fix crossbeam 1-33 with snap close piece 1-37 adjusting horizontal lead screw 1-23 and vertical after being put into
Screw rod 1-34 can realize the limitation to oil pipe and the adjustment of position.
Coalignment 7 as shown in Figure 5 and Figure 6 includes fixed frame 7-1, and sliding is equipped with runing rest 7- on fixed frame 7-1
2, runing rest 7-2 include the carrier 7-22 of two arc guide rail frame 7-21 of a pair of of arc guide rail frame 7-21 and connection, are being schemed
In embodiment fixed frame 7-1 on setting bearing 7-11 support arc guide rail frame 7-21 and realize the rotation of arc guide rail frame 7-21
Turn, guide runner 7-23 is specifically equipped on arc guide rail frame 7-21, the bearing 7-11 being fixed on fixed frame 7-1, which is placed in, to be led
In sliding slot 7-23, it is equipped with hydraulic motor 7-3 on fixed frame 7-1, is equipped with driving runing rest in hydraulic motor 7-3 output end
The gear 7-31 of 7-2 rotation, the tooth cooperated with gear 7-31 is equipped on the arc guide rail surface frame 7-21 ipsilateral with gear 7-31
Facing 7-24, can also be used sprocket wheel chain structure realize runing rest 7-2 rotation, do not limit with a kind of mode of the present embodiment,
It is fixed with alignment oil cylinder 7-4 on carrier 7-22, the alignment head 7- for acting on coiled tubing is equipped in alignment one end oil cylinder 7-4
5, it is further fixed on a pair of of path transfer frame 7-6 on carrier 7-22, one group of symmetrically arranged adjusting is equipped on each path transfer frame 7-6
Hole 7-7 is equipped between path transfer frame 7-6 and cooperates path transfer roller 7-8, path transfer roller 7-8 to be fixed on adjustment hole 7-7 with alignment head 7-5
On, due to by change path transfer roller 7-8 be mounted on different adjustment hole 7-7 can change path transfer roller 7-8 and alignment head 7-5 it
Between distance, so according to the coiled tubing of different size can by path transfer roller 7-8 realize adjust to meet oil pipe specification, by
In oil pipe curve direction difference, so by driving runing rest 7-2 rotation can at any time have more oil pipe curve direction come
The direction of alignment is adjusted, working efficiency and alignment effect are improved.
Welding pairing device 3 as shown in Figure 7 to 9 includes the identical clamping device of symmetrically arranged a pair of of structure,
The clamping device includes support underframe 3-1, and X-axis is equipped on support underframe 3-1 and pushes hydraulic cylinder 3-2, on support underframe 3-1
Sliding is provided with the middle seat 3-3 that can be moved in the horizontal direction, and the bottom middle seat 3-3 pushes the free end hydraulic cylinder 3-2 to connect with X-axis,
It is provided with Z axis on middle seat 3-3 and pushes hydraulic cylinder 3-4, pushes the free end hydraulic cylinder 3-4 to be equipped with footstock 3-5 in Z axis, in middle seat
It is additionally provided with slide guide cylinder 3-31 on 3-3, the slide guide bar 3-51 cooperated with slide guide cylinder 3-31 is equipped on footstock 3-5；On footstock 3-5
Hydraulic cylinder 3-6 is pushed equipped with Y-axis, pushes the free end hydraulic cylinder 3-6 to be connected with top plate 3-7 in Y-axis, is equipped with and leads on footstock 3-5
Rail 3-52, on top plate 3-7 be equipped with along guide rail 3-52 slide embrace rail 3-71, on top plate 3-7 be equipped with stationary fixture 3-8 with
Fixed chuck 3-9, fixed chuck 3-9 includes chuck bracket 3-91, sets that there are four in cross row on chuck bracket 3-91
The movable jaw 3-92 that can move alone is arranged, movable jaw 3-92 includes adjusting screw rod 3-921 and is arranged in adjusting screw rod 3-
The section clip 3-922, each clip 3-922 of 921 ends is arc-shaped and can be combined into tubulose；Stationary fixture 3-8 includes folder
Have seat 3-81, clamping plate 3-82 is hinged on clamping fixture seat 3-81, the fastener of strap 3-82 is equipped on clamping fixture seat 3-81
3-84 is equipped with the holding tank 3-83 of clamping pipeline between clamping plate 3-82 and clamping fixture seat 3-81.It welds there are two pairing devices 3
Clamping device composition will need two coiled tubings docked to be separately fixed on two fixed chuck 3-9 and stationary fixture 3-8
Docking pushes hydraulic cylinder 3-2, Y-axis to push hydraulic cylinder 3-6 and Z axis that hydraulic cylinder 3-4 adjustment is pushed finally to make two by X-axis
The position alignment for now needing oil pipe to dock is welded, and easy to operate and fixing-stable has proposed welding efficiency and quality.
Workbench 2 as shown in Figure 10 and Figure 11 includes fixed platform 2-1 and rotatable platform 2-2, rotatable platform 2-2
It is hinged on fixed platform 2-1, is fixed with toothed disc 2-3 in the bottom rotatable platform 2-2, driving is equipped on fixed platform 2-1
The driving motor 2-4 of toothed disc 2-3 rotation is equipped with lifting apparatus 2-5 in the bottom fixed platform 2-1, and lifting apparatus 2-5 includes handing over
Bracket 2-51 is pitched, arm support 2-51 is in ipsilateral one end (home position α in figure) and is respectively hinged at car body 1 and fixes flat
On platform 2-1, arm support 2-51 is slidably arranged in car body 1 relative to hinged one end (home position β in figure) respectively and fixes
On platform 2-1, it is equipped with driving arm support 2-51 on arm support 2-51 along the movable hydraulic cylinder 2-52 of cross-articulation point, is
It is a pair of along fixed platform 2-1 center symmetric setting to stablize arm support 2-51 in the embodiment.Driving hydraulic cylinder 2-52 makes to hand over
Fork bracket 2-51 activity is to raise or lower fixed platform 2-1 height, and driving motor 2-4 drives toothed disc 2-3 to rotate energy
Mobile platform is enough set to realize Arbitrary Rotation, it is continuous to have a try which can adapt to different place demands during on-site construction
Pipeline docking.
Wherein detection device 4 is full tube body leakage magnetic detection device.
Claims (9)
1. a kind of coiled tubing docking and detection Information Mobile Service vehicle, including car body (1), it is characterised in that: in the car body (1)
It is equipped with workbench (2), is successively arranged the first supporting and positioning device (a1), coalignment on the workbench (2)
(7), pairing device (3), the second supporting and positioning device (a2), detection device (4), third supporting and positioning device (a3) are welded,
Generating equipment (5) and hydraulic station (6) are additionally provided on the car body (1).
2. a kind of coiled tubing docking according to claim 1 and detection Information Mobile Service vehicle, it is characterised in that: described the
One supporting and positioning device (a1), the second supporting and positioning device (a2) identical with third supporting and positioning device (a3) structure include bottom
Seat (1-1) is equipped with horizontal clamping device (1-2) and vertical clamping device (1-3), the water on the pedestal (1-1)
Flat clamping device (1-2) includes a pair of of movable support (1-21), is equipped with vertical rod (1- on each movable support (1-21)
22), the water that movable support (1-21) can be driven to move in the horizontal direction is equipped in each described bottom movable support (1-21)
Flat screw rod (1-23), the vertical clamping device (1-3) include mounting rack (1-31), in described lower part mounting rack (1-31)
It is fixed with the first sleeping rod (1-32), crossbeam (1-33) is hinged on described top mounting rack (1-31), in the crossbeam (1-
33) being equipped with can set along the down-feed screw (1-34) that crossbeam (1-33) is moved up and down in described end down-feed screw (1-34)
Have with down-feed screw (1-34) movable mounting rail (1-35), is equipped with and the first sleeping rod on the mounting rail (1-35)
The second sleeping rod (1-36) of (1-32) cooperation, sets at the top of the mounting rack (1-31) far from the hinged place one end crossbeam (1-33)
There is the snap close piece (1-37) of fixed cross beam (1-33).
3. a kind of coiled tubing docking according to claim 2 and detection Information Mobile Service vehicle, it is characterised in that: described
Crossbeam (1-33) is equipped with a pair of of slide guide column (1-38), and the mounting rail (1-35) is slidably arranged on slide guide column (1-38).
4. a kind of coiled tubing docking according to claim 1 and detection Information Mobile Service vehicle, it is characterised in that: the school
Straight device (7) includes fixed frame (7-1), and sliding is equipped with runing rest (7-2) on the fixed frame (7-1), the rotation
Turn the carrier (7-22) that bracket (7-2) includes two arc guide rail framves (7-21) of a pair of of arc guide rail frame (7-21) and connection,
The hydraulic motor (7-3) of driving runing rest (7-2) rotation is equipped on the fixed frame (7-1), in the carrier
It is fixed with alignment oil cylinder (7-4) on (7-22), the alignment for acting on coiled tubing is equipped in described alignment oil cylinder one end (7-4)
Head (7-5), is further fixed on a pair of of path transfer frame (7-6), on each path transfer frame (7-6) on the carrier (7-22)
Equipped with one group of symmetrically arranged adjustment hole (7-7), it is equipped between the path transfer frame (7-6) and is adjusted with alignment head (7-5) cooperation
Diameter roller (7-8), the path transfer roller (7-8) are fixed on adjustment hole (7-7).
5. a kind of coiled tubing docking according to claim 4 and detection Information Mobile Service vehicle, it is characterised in that: described
It is provided with bearing (7-11) on fixed frame (7-1), is equipped with guide runner (7-23) on the arc guide rail frame (7-21), it is described
Bearing (7-11) be placed in guide runner (7-23), be equipped with driving runing rest (7- in hydraulic motor (7-3) output end
2) gear (7-31) rotated is equipped on arc guide rail frame (7-21) surface ipsilateral with gear (7-31) and matches with gear (7-31)
The teeth face (7-24) of conjunction.
6. a kind of coiled tubing docking according to claim 1 and detection Information Mobile Service vehicle, it is characterised in that: welding group pair
Device (3) includes the identical clamping device of symmetrically arranged a pair of of structure, and the clamping device includes support underframe (3-
1) it, is equipped with X-axis on the support underframe (3-1) and pushes hydraulic cylinder (3-2), is slided on the support underframe (3-1)
It is provided with the middle seat (3-3) that can be moved in the horizontal direction, the middle seat bottom (3-3) and X-axis push hydraulic cylinder (3-2) freely
End connection is provided with Z axis on the middle seat (3-3) and pushes hydraulic cylinder (3-4), pushes hydraulic cylinder (3-4) in the Z axis
Free end is equipped with footstock (3-5), is equipped with slide guide cylinder (3-31) on the middle seat (3-3), sets on the footstock (3-5)
There is the slide guide bar (3-51) with slide guide cylinder (3-31) cooperation；It is equipped with Y-axis on the footstock (3-5) and pushes hydraulic cylinder (3-6),
It pushes the free end hydraulic cylinder (3-6) to be connected with top plate (3-7) in the Y-axis, guide rail is equipped on the footstock (3-5)
(3-52) is equipped on the top plate (3-7) and embraces rail (3-71) along what guide rail (3-52) was slided, in the top plate (3-7)
It is equipped with stationary fixture (3-8) and fixes chuck (3-9), the fixation chuck (3-9) includes chuck bracket (3-91), in institute
The chuck bracket (3-91) stated can move alone movable jaw (3-92) there are four setting in cross arrangement, the work
Dynamic claw (3-92) includes the clip (3-922) of adjusting screw rod (3-921) and setting in the end adjusting screw rod (3-921), each institute
The section clip (3-922) stated is arc-shaped and can be combined into tubulose；The stationary fixture (3-8) includes clamping fixture seat (3-
81) it, is hinged on clamping fixture seat (3-81) clamping plate (3-82), the buckle of strap (3-82) is equipped on clamping fixture seat (3-81)
Part (3-84) is equipped with the holding tank (3-83) of clamping pipeline between the clamping plate (3-82) and clamping fixture seat (3-81).
7. a kind of coiled tubing docking according to claim 1 and detection Information Mobile Service vehicle, it is characterised in that: the work
Making platform (2) includes fixed platform (2-1) and rotatable platform (2-2), and the rotatable platform (2-2) is hinged on fixed platform
On (2-1), it is fixed with toothed disc (2-3) in described bottom rotatable platform (2-2), is set in the fixed platform (2-1)
The driving motor (2-4) for having drive gear disk (2-3) to rotate is equipped with lifting apparatus (2- in the fixed platform bottom (2-1)
5), the lifting apparatus (2-5) includes arm support (2-51), and the arm support (2-51) is in ipsilateral one end point
It is not hinged on car body (1) and fixed platform (2-1), the arm support (2-51) is slided respectively relative to hinged one end to be set
It sets on car body (1) and fixed platform (2-1), driving edge arm support (2-51) is equipped on the arm support (2-51)
The movable hydraulic cylinder of cross-articulation point (2-52).
8. a kind of coiled tubing docking according to claim 7 and detection Information Mobile Service vehicle, it is characterised in that: the friendship
Bracket (2-51) is pitched along fixed platform (2-1) center symmetric setting a pair.
9. a kind of coiled tubing docking according to claim 1 and detection Information Mobile Service vehicle, it is characterised in that: the inspection
Surveying device (4) is full tube body leakage magnetic detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820768832.1U CN208743947U (en) | 2018-05-23 | 2018-05-23 | A kind of docking of coiled tubing and detection Information Mobile Service vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820768832.1U CN208743947U (en) | 2018-05-23 | 2018-05-23 | A kind of docking of coiled tubing and detection Information Mobile Service vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208743947U true CN208743947U (en) | 2019-04-16 |
Family
ID=66053430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820768832.1U Active CN208743947U (en) | 2018-05-23 | 2018-05-23 | A kind of docking of coiled tubing and detection Information Mobile Service vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208743947U (en) |
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2018
- 2018-05-23 CN CN201820768832.1U patent/CN208743947U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211213 Address after: 100120 No.6 liupukang, Xicheng District, Beijing Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: Baoji Petroleum Steel Pipe Co., Ltd Address before: 721008 No. 1, Binhe Road, high tech Development Zone, Weibin District, Baoji City, Shaanxi Province Patentee before: BAOJI PETROLEUM STEEL PIPE Co.,Ltd. |
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| TR01 | Transfer of patent right |