CN205192747U - Packer test device - Google Patents
Packer test device Download PDFInfo
- Publication number
- CN205192747U CN205192747U CN201521033574.5U CN201521033574U CN205192747U CN 205192747 U CN205192747 U CN 205192747U CN 201521033574 U CN201521033574 U CN 201521033574U CN 205192747 U CN205192747 U CN 205192747U
- Authority
- CN
- China
- Prior art keywords
- clamp
- crossbeam
- pull bar
- cylinder
- test device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a be different from the packer test device of prior art scheme, include simulation wellbore hole, connecting rod, pull rod, loading driving cylinder, loading crossbeam, the loading driving cylinder is fixed on the loading crossbeam, and loading driving cylinder pole is connected to connecting rod one end, and the other end is connected by the examination packer, load crossbeam activity suit is on the pull rod, still include step drive jar, step -by -step crossbeam, step -by -step crossbeam activity suit is on the pull rod, the jar seat and the jar pole of step drive jar are connected with step -by -step crossbeam, loading crossbeam respectively, setting up the stop device that can remove between step -by -step crossbeam and the pull rod, having reduced the length of driving cylinder, system stability is stronger.
Description
Technical field
The utility model relates to testing equipment technical field, is specifically a kind of packer test device.
Background technology
Packer is isolated payzone at oil exploitation Main Function, and separate the effects such as water filling, the performance of its sealing to packer plays key effect.Normally can work in down-hole in order to ensure separation scraper, need aboveground test in engineering after, packer could be arranged into down-hole, in order to study packer, also need to build pilot system and studying.For the test unit of packer, implementation existing more in prior art.Paper " lift-on/lift-off type subsurface tool test well head twisting tension and compression system " (" petroleum machinery " magazine the 37th volume the 3rd phase in 2009) proposes a kind of subsurface tool pilot system, the subsurface tool comprising packer can be tested, loading crossbeam is sleeved on column, load crossbeam by hydraulic oil cylinder driving to move up and down, this way of realization can make loading crossbeam move up and down, and is convenient to test the packer of different length.But when carrying out simulation test, need the liquid pressing to passing into wellbore hole simulator, pressure will be transmitted on driving cylinder, additional load is produced to driving cylinder, when test pressure is larger, this additional load causes driving cylinder to bear sizable strength, and the type selecting of driving cylinder must be very large.In addition, the actuating medium of current driving cylinder is mostly air or the compressible medium of hydraulic pressure wet goods, during test, in the process of balance additional load, likely cause actuating medium volume change in driving cylinder chamber, change causes connecting rod to be subjected to displacement or vibrates, thus causes adverse effect to test; In addition, when packer is longer, the length of driving cylinder is also longer, the less stable of longer driving cylinder, thus the stability that have impact on test unit.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of packer test device being different from prior art, and reduce the length of driving cylinder, system stability is stronger.
The technical solution of the utility model is: a kind of packer test device, comprise wellbore hole simulator, connecting rod, pull bar, load driver cylinder, load crossbeam, described load driver cylinder is fixed on and loads on crossbeam, connecting rod one end connects load driver cylinder bar, the other end connects tested packer, and described loading crossbeam movable set is on pull bar; It is characterized in that: also comprise stepper drive cylinder, stepping crossbeam, described stepping crossbeam also movable set on pull bar, the cylinder seat of described stepper drive cylinder and cylinder bar respectively with stepping crossbeam, load crossbeam and be connected, between described stepping crossbeam and pull bar, dissoluble stop means is set.
Before test, remove stop means, stepper drive cylinder can drive stepping crossbeam to move along pull bar, and after moving into place, stop means is locked, and adopt in this way, the stroke of stepper drive cylinder shortens greatly, ensure that the stability of test unit.
One as the utility model packer test device is improved: also arrange dissoluble stop means on described loading crossbeam and between pull bar.During test, locking loads the stop means on crossbeam and between pull bar, and when adopting in this way, test pressure is transmitted on pull bar by stop means, stepper drive cylinder does not bear test load, thus avoids the adverse effect of additional load to driving cylinder type selecting and pilot system.During Adjustment Tests position, first the stop means on stepping crossbeam and between pull bar is locked, stepper drive cylinder is released, drive load crossbeam arrives desired location, then locking loads the stop means on crossbeam and between pull bar, remove the stop means on stepping crossbeam and between pull bar, stepper drive cylinder is retracted (reverse-order motion also can); Stepping crossbeam can be made and load crossbeam to move into place gradually in the step motion mode being similar to looper; Adjust convenient.
The implementation of described stop means can be: pull bar arranges screw thread, and on pull bar, stepping crossbeam or loading crossbeam both sides arrange nut.Before test, nut unscrews, and stepping crossbeam and loading crossbeam can slide on pull bar.
The implementation of described stop means also can be: pull bar is step-like, crossbeam is arranged clamp and clamp driver part, and described clamp driver part drives clamp embed or shift out pull bar thin segment.
Above two kinds is the way of realization of comparatively typical stop means, and adopt fastening nuts mode, crossbeam can rest on the optional position on pull bar, and packer can be tested in wellbore hole simulator optional position.Adopt clamp clamping mode, crossbeam can only rest on the ad-hoc location of pull bar, but adopts clamp driver part to drive clamp, is convenient to realize controlling.
Clamp driver part can be clamp driving cylinder, the pattern of described clamp driving cylinder and clamp can be the one of following two kinds of modes: mode one, described clamp front portion is semicircle and chimeric with pull bar thin segment, clamp rear portion is connected with the cylinder bar of clamp driving cylinder, and clamp driving cylinder drives clamp to stretch out and retraction; Mode two, described clamp front inner is semicircle and chimeric with pull bar thin segment, and two clamp are mounted opposite, the hinged control link in clamp rear portion, and the cylinder bar of control link and clamp driving cylinder is hinged, clamp driving cylinder driver card icarceration conjunction and opening.
In wellbore hole simulator front end, dissoluble stop means is set.Before test, unclamp stop means, inserted by packer in wellbore hole simulator, set, locking stop means, during test, the additional load produced when stop means bears test, can eliminate the impact of additional load on load driver cylinder.
Described dissoluble stop means set by wellbore hole simulator front end is stop collar.Before test, remove stop collar, inserted by packer in wellbore hole simulator, set, mounting limit overlaps and adopts screw threads for fastening, and during test, the additional load produced when stop means bears test, can eliminate the impact of additional load on load driver cylinder.Adopt the mode of stop collar and screw threads for fastening, it is all convenient to arrange and operate, and those skilled in the art can also adopt other similar modes.
When the vertical installation of wellbore hole simulator, pull bar needs fixing, can by the following technical solutions: also comprise framework, described pull bar is vertically arranged, and pull bar upper end is fixed on framework.
When the horizontal installation of wellbore hole simulator, can by the following technical solutions: also comprise base, described pull bar is horizontally disposed with, stepping crossbeam is arranged on the dolly that can move back and forth along base.Load crossbeam to be arranged on the dolly that can move back and forth along base.
Accompanying drawing explanation
Fig. 1 is the front elevation that packer test device of the present utility model adopts an embodiment of clamp clamping stepped appearance pull bar mode.
Fig. 2 is the partial enlarged drawing of packer test device in Fig. 1.
Fig. 3, Fig. 4 are the schematic diagram of a kind of embodiment of the packer test device clamp of Fig. 4, and Fig. 3 is the states of clamp when embedding pull bar thin segment, and Fig. 4 is the states of clamp when shifting out pull bar thin segment.
Fig. 5, Fig. 6 are the schematic diagram of the another kind of embodiment of the packer test device clamp of Fig. 4, and Fig. 5 is the states of clamp when embedding pull bar thin segment, and Fig. 6 is the states of clamp when shifting out pull bar thin segment.
Fig. 7 is the front elevation that packer test device of the present utility model adopts another embodiment of clamp clamping stepped appearance pull bar mode.
Fig. 8 is the A-A cut-open view of packer test device in Fig. 7.
Fig. 9 is the B-B cut-open view of packer test device in Fig. 7.
Figure 10 is the front elevation that packer test device of the present utility model adopts an embodiment of nut lock pull bar mode.
Embodiment
Embodiment 1.
Embodiment 1 is an embodiment of the packer test device involved by the utility model, and for making the structure in Fig. 1 more clear, arranging Fig. 2 is the zoomed-in view that in Fig. 1, double dot dash line frame goes out part, 1,2,3,4,5,6 explanations by reference to the accompanying drawings.
As shown in Figure 1, 2: pull bar 4 is vertical with wellbore hole simulator 10 to be arranged, and pull bar 4 upper end is fixed on framework, and lower end is fixed on base.
Described load driver cylinder 2 is fixed on and loads on crossbeam 3, and connecting rod 1 one end connects load driver cylinder bar, and the other end connects tested packer, and described loading crossbeam 3 movable set is on pull bar 4; The cylinder seat of stepper drive cylinder 6 is connected with stepping crossbeam 5, and stepper drive cylinder 6 cylinder bar is connected with loading crossbeam 3.Also the cylinder bar of stepper drive cylinder can be connected with stepping crossbeam 5, the cylinder seat of stepper drive cylinder is connected with loading crossbeam, and the effect that two kinds of modes play is identical.
Dissoluble stop means 7 is set between stepping crossbeam 5 and pull bar 4.Before test, remove stop means, stepper drive cylinder can drive stepping crossbeam to move along pull bar, and after moving into place, stop means is locked, and adopt in this way, the stroke of stepper drive cylinder shortens greatly, ensure that the stability of test unit.
Load on crossbeam 3 and dissoluble stop means 8 is also set between pull bar 4.During test, locking loads the stop means 8 on crossbeam 3 and between pull bar 4, and when adopting in this way, test pressure is transmitted on pull bar by stop means 8, stepper drive cylinder 6 does not bear test load, thus avoids the adverse effect of additional load to driving cylinder type selecting and pilot system.During Adjustment Tests position, first the stop means 8 on stepping crossbeam 5 and between pull bar is locked, stepper drive cylinder 6 is released, drive load crossbeam 3 arrives desired location, then locking loads the stop means 8 on crossbeam 3 and between pull bar 4, then remove the stop means on stepping crossbeam 5 and between pull bar 4, stepper drive cylinder 6 is retracted (reverse-order motion also can); Stepping crossbeam can be made and load crossbeam to move into place gradually in the step motion mode being similar to looper; Adjust convenient.
In the present embodiment, described loading crossbeam, between stepping crossbeam and pull bar, the form of dissoluble stop means is stepped appearance pull bar and clamp, as shown in Figure 2, clamp driver part 71 (81) drives clamp 72 (82) to embed or shift out pull bar 4 thin segment.
Fig. 3,4 is a kind of implementations that clamp driver part adopts clamp driving cylinder.Clamp 721(821 as shown in Figure 3,4) front portion is semicircle and chimeric with pull bar 4 thin segment, clamp 721(821) rear portion and clamp driving cylinder 711(811) and cylinder bar be connected, clamp driving cylinder 711(811) drive clamp 721(821) stretch out and retraction; As shown in Figure 3, clamp driving cylinder 711(811) cylinder bar is when stretching out, clamp 721(821) anteriorly semicirclely embed the thin portion of pull bar; As shown in Figure 4, clamp driving cylinder 711(811) cylinder bar is when retracting, clamp 721(821) anterior semicircle away from pull bar.
Fig. 5,6 is another kind of implementations that clamp driver part adopts clamp driving cylinder.Institute Fig. 5,6 shows, clamp 722(822) front inner is semicircle and chimeric with pull bar 4 thin segment, two clamp 722(822) be mounted opposite, clamp 722(822) the hinged control link 723(823 in rear portion), control link 723(823) with clamp driving cylinder 712(812) cylinder bar hinged, clamp driving cylinder 712(812) drive clamp 722(822) closed with open.Clamp driving cylinder 712(812 as shown in Figure 5) cylinder bar is when stretching out, clamp 722(822) front inner semicircle embeds the thin portion of pull bar; As shown in Figure 6, clamp driving cylinder 712(812) cylinder bar retracts constantly, clamp 722(822) open, it is anterior semicircle away from the thin portion of pull bar.
In wellbore hole simulator 10 front end, dissoluble stop means is set.In the present embodiment, described dissoluble stop means is stop collar 9.Before test, remove stop collar 9, inserted by packer in wellbore hole simulator 10, set, mounting limit cover 9 also adopts screw fastening, and during test, the additional load produced when stop means bears test, can eliminate the impact of additional load on load driver cylinder.Adopt the mode of stop collar and screw fastening, it is all convenient to arrange and operate, and those skilled in the art can also adopt other similar modes.
Embodiment 2.
Embodiment 2 is another embodiments of the packer test device involved by the utility model, by reference to the accompanying drawings 7,8,9 explanations.
In the present embodiment, the layout of packer test device is horizontal, as Fig. 7, wellbore hole simulator 10 is installed on the pedestal 11, tested packer to insert in wellbore hole simulator 10, and connecting rod 1 right-hand member connects tested packer, and connecting rod 1 left end connects load driver cylinder 2 cylinder bar, stop collar 9 is arranged on wellbore hole simulator 10 left end, bears the effect of additional load when loading.Load driver cylinder 2 is fixed on and loads on crossbeam 3, loads crossbeam 3 and is arranged on the dolly 13 that can move back and forth along base, be convenient to adjust loading position.Stepping crossbeam 5 is arranged on the dolly 12 that can move back and forth along base, and the cylinder seat of stepper drive cylinder 6 is connected with stepping crossbeam 5, and stepper drive cylinder 6 cylinder bar is connected with loading crossbeam 3.Also the cylinder bar of stepper drive cylinder can be connected with stepping crossbeam 5, the cylinder seat of stepper drive cylinder is connected with loading crossbeam, and the effect that two kinds of modes play is identical.Loading crossbeam 3, stepping crossbeam 5 are all sleeved on pull bar 4.
Fig. 8 is the A-A direction view of Fig. 7, as shown in Figure 8: clamp 722(822) front inner is semicircle and chimeric with pull bar 4 thin segment, two clamp 722(822) be mounted opposite, clamp 722(822) the hinged control link 723(823 in rear portion), control link 723(823) with clamp driving cylinder 713(813) cylinder bar hinged, clamp driving cylinder 713(813) drive clamp 722(822) closed with open.In the present embodiment, two pairs, left and right clamp share a clamp driving cylinder 713(813) control, clamp driving cylinder 713(813) the connecting rod 723(823 on the hinged left side of cylinder bar), clamp driving cylinder 713(813) the connecting rod 723(823 on the hinged the right of cylinder seat).In the present embodiment, clamp 722(822) different conditions be jointly drawn on same figure, open mode adopts double dot dash line to draw, and closedly adopts depicted as solid lines.
Fig. 9 is the B-B direction view of Fig. 7, as shown in Figure 9: clamp 721(821) front portion is semicircle and chimeric with pull bar 4 thin segment, clamp 721(821) rear portion and clamp driving cylinder 711(811) cylinder bar be connected, clamp driving cylinder 711(811) drive clamp 721(821) stretch out and retraction; Clamp driving cylinder 711(811) cylinder bar is when stretching out, clamp 721(821) anteriorly semicirclely embed the thin portion of pull bar; Clamp driving cylinder 711(811) cylinder bar is when retracting, clamp 721(821) anterior semicircle away from pull bar.In the present embodiment, clamp 721(821) different conditions be jointly drawn on same figure, leave pull bar state and adopt double dot dash line to draw, insert state adopts depicted as solid lines.
Embodiment 3.
The present embodiment be load crossbeam, when between stepping crossbeam and pull bar, the form of dissoluble stop means is feed screw nut a kind of embodiment.
As shown in Figure 10: stepper drive cylinder 6 ' cylinder seat is fixed on stepping crossbeam 5 ', stepper drive cylinder 6 ' cylinder bar is connected with loading crossbeam 3 ', and load crossbeam 3 ' and be connected with connecting rod 1, connecting rod 1 connects tested packer, inserts in wellbore hole simulator.Stepping crossbeam 5 ', load crossbeam 3 ' movable set pull bar 4 ' on, pull bar 4 ' arranges screw thread, stepping crossbeam 5 ', loading crossbeam 3 ' both sides arrange nut, when needs adjustment stepping crossbeam 5 ', position, unscrew stepping crossbeam 5 ', load the nut of crossbeam 3 ' both sides, stepper drive cylinder 6 ' by the telescopic drive stepping crossbeam 5 ' of cylinder bar, load crossbeam 3 ' and move into place gradually in the step motion mode being similar to looper.Adopt fastening nuts mode, crossbeam can rest on the optional position on pull bar, and packer can be tested in wellbore hole simulator optional position.
Before test, unscrew and load crossbeam 3 ' both sides nut, tested packer enters in wellbore hole simulator 10, after setting, screws and loads crossbeam 3 ' both sides nut, during test, nut bears additional load, avoids driving cylinder and bears additional load, without the need to selecting excessive driving cylinder, decrease cost, structure is compacter; The more important thing is, eliminate the possibility that driving cylinder is subjected to displacement or vibrates, avoid the adverse effect of test.Load driver cylinder and stepper drive cylinder can share one simultaneously, decrease deployment cost.
Claims (10)
1. a packer test device, comprise wellbore hole simulator, connecting rod, pull bar, load driver cylinder, load crossbeam, described load driver cylinder is fixed on and loads on crossbeam, and connecting rod one end connects load driver cylinder bar, the other end connects tested packer, and described loading crossbeam movable set is on pull bar; It is characterized in that: also comprise stepper drive cylinder, stepping crossbeam, described stepping crossbeam movable set is on pull bar, the cylinder seat of described stepper drive cylinder and cylinder bar respectively with stepping crossbeam, load crossbeam and be connected, between described stepping crossbeam and pull bar, dissoluble stop means is set.
2. packer test device according to claim 1, is characterized in that: on described loading crossbeam and arrange dissoluble stop means between pull bar.
3. packer test device according to claim 1 and 2, it is characterized in that: described dissoluble stop means arranges form and is: pull bar is step-like, described stepping crossbeam or loading crossbeam arrange clamp and clamp driver part, and described clamp driver part drives clamp embed or shift out pull bar thin segment.
4. packer test device according to claim 1 and 2, is characterized in that: described dissoluble stop means arranges form and is: pull bar arranges screw thread, and pull bar arranges nut at stepping crossbeam or loading crossbeam both sides.
5. packer test device according to claim 3, it is characterized in that: clamp driver part is clamp driving cylinders, the pattern of described clamp driving cylinder and clamp is: described clamp front portion is semicircle and chimeric with pull bar thin segment, clamp rear portion is connected with the cylinder bar of clamp driving cylinder, and clamp driving cylinder drives clamp to stretch out and retraction.
6. packer test device according to claim 3, it is characterized in that: clamp driver part is clamp driving cylinders, the pattern of described clamp driving cylinder and clamp is: described clamp front inner is semicircle and chimeric with pull bar thin segment, two clamp are mounted opposite, the hinged control link in clamp rear portion, the cylinder bar of control link and clamp driving cylinder is hinged, and clamp driving cylinder driver card icarceration is closed and opened.
7. packer test device according to claim 1 and 2, is characterized in that: arrange dissoluble stop means in wellbore hole simulator front end.
8. packer test device according to claim 7, is characterized in that: described dissoluble stop means set by wellbore hole simulator front end is stop collar.
9. packer test device according to claim 1 and 2, it is characterized in that: also comprise framework, described pull bar is vertically arranged, pull bar upper end is fixed on framework.
10. packer test device according to claim 1 and 2, is characterized in that: also comprise base, described pull bar is horizontally disposed with, and stepping crossbeam and at least one loading in crossbeam are arranged on the dolly that can move back and forth along base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521033574.5U CN205192747U (en) | 2015-12-14 | 2015-12-14 | Packer test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521033574.5U CN205192747U (en) | 2015-12-14 | 2015-12-14 | Packer test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192747U true CN205192747U (en) | 2016-04-27 |
Family
ID=55785726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521033574.5U Withdrawn - After Issue CN205192747U (en) | 2015-12-14 | 2015-12-14 | Packer test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205192747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372058A (en) * | 2015-12-14 | 2016-03-02 | 青岛中瑞泰软控技术有限公司 | Packer test device |
| CN113375927A (en) * | 2020-03-10 | 2021-09-10 | 中国石油天然气股份有限公司 | High-temperature horizontal well packer test device |
-
2015
- 2015-12-14 CN CN201521033574.5U patent/CN205192747U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372058A (en) * | 2015-12-14 | 2016-03-02 | 青岛中瑞泰软控技术有限公司 | Packer test device |
| CN105372058B (en) * | 2015-12-14 | 2018-03-13 | 青岛中瑞泰软控科技股份有限公司 | packer test device |
| CN113375927A (en) * | 2020-03-10 | 2021-09-10 | 中国石油天然气股份有限公司 | High-temperature horizontal well packer test device |
| CN113375927B (en) * | 2020-03-10 | 2022-12-02 | 中国石油天然气股份有限公司 | High-temperature horizontal well packer test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205192747U (en) | Packer test device | |
| CN201412416Y (en) | Cylinder testing device | |
| CN201078369Y (en) | Position detection apparatus for external type hydraulic cylinder | |
| CN105424345A (en) | Packer simulation detection device | |
| CN202367417U (en) | Multi-pass pin puller for pin shaft of bracket | |
| CN103278065B (en) | Rock stratum bidirectional displacement monitoring device and monitoring method | |
| CN102428246B (en) | Multi-ram drill rig and method of operation | |
| CN105372058A (en) | Packer test device | |
| CN205228806U (en) | Packer simulation detection device | |
| CN100999298A (en) | Connecting rod type carrying pin inserting mechanism for crane | |
| CN203578596U (en) | Expanding rod selection device of pipe expander | |
| CN205047146U (en) | Roofbolter and hydraulic control system thereof | |
| CN205599802U (en) | Dual -purpose vertical electric tube expander | |
| CN202787077U (en) | Sleeve rod connection type pull bar jack tensioning system | |
| JP3981789B2 (en) | 2-axis seismic isolation rubber testing machine | |
| CN103551468A (en) | Expansion rod selecting device of pipe expander | |
| CN206513639U (en) | A kind of lifting mechanism synchronous control system and the exhibition vehicle containing the system | |
| CN100368701C (en) | Hydromagnetic variable liquid adjustable damper | |
| CN102619171A (en) | Loop bar connection type draw bar jack tension system | |
| CN208918483U (en) | One kind pulling workover rig derrick adjustment device and pulls workover rig | |
| CN106494576A (en) | Submersible lowering equipment | |
| CN205629261U (en) | Utilize riveting institutions of lever reinforcement | |
| CN109520904A (en) | A kind of ventilative property detection device of textile | |
| CN206520267U (en) | Slitter edge device is torn for infusion bag | |
| CN214366012U (en) | Horizontal well perforating device for oil exploration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: The Tai Ruan of Qingdao China and Sweden control techniques company limited Address before: Miao road Laoshan District 266061 Shandong city of Qingdao province 6-8 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: Qingdao Ruitai mesnac Polytron Technologies Inc Address before: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20180313 |
|
| AV01 | Patent right actively abandoned |