CN201212385Y - High-pressure high flow rate oil, gas and water desander filtration apparatus - Google Patents
High-pressure high flow rate oil, gas and water desander filtration apparatus Download PDFInfo
- Publication number
- CN201212385Y CN201212385Y CNU2008203012034U CN200820301203U CN201212385Y CN 201212385 Y CN201212385 Y CN 201212385Y CN U2008203012034 U CNU2008203012034 U CN U2008203012034U CN 200820301203 U CN200820301203 U CN 200820301203U CN 201212385 Y CN201212385 Y CN 201212385Y
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- cartridge filter
- bar shaped
- cylindrical shell
- flat cover
- convex platform
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Abstract
The utility model relates to a filter device used for filtering the liquid which contains sand granules and other solid particles and flows from an oil-gas well to the ground, in particular to a filter device of a high-pressure and high-emission oil-gas-water sand separator, which comprises a flat cover, a tube body, and a strip-shaped filter cylinder; the lower end of the flat cover and the upper part of the tube body are fixedly arranged together, a fluid inlet communicated with inner cavity of the tube body is arranged on the tube body, a fluid outlet communicated with inner cavity of the tube body is arranged on the tube body below the fluid inlet, and a sewage drain outlet communicated with inner cavity of the tube body is arranged at the bottom part of the tube body. The utility model has the advantages that the structure is reasonable and compact, the use is convenient, because the filter device can effectively remove the sand and solid phases contained in the liquid produced in the well cylinder of the oil-gas well, the severe erosion and abrasion caused to the pipelines and accessories thereof by the high-speed sand containing flow and the damages to human bodies and equipment security caused by the leakage can be prevented, therefore, potential safety hazards in production is reduced greatly, the work efficiency is improved simultaneously, the labor intensity of the on site workers is lowered, and the manufacturing cost is also reduced.
Description
One, technical field
The utility model relates to filtration flows to the fluid that contains sand grains and other solid particles on ground from the oil gas well device, is a kind of high-pressure large-displacement oil gas water desander filter.
Two, background technology
In the crude oil production testing operation, from the oil gas well, flow to and contain sand grains and other solid particles in the fluid on ground, these materials are in high pressure conditions, are very easy to ground flow equipment is caused erosion.Particularly move back in the liquid metering operation in sand fracturing, accumulate some movable proppants (as quartz sand or pottery) particle in the pit shaft, the landwaste that produces of formation fracture and also in test process, entered test ground flow pipeline simultaneously in company with fluid (natural gas, fracturing fluid) by the proppant particulate of crushing in the stratum, add the flow at high speed of gas, form high speed and contain the sand jet.This jet forms very serious erosion and abrasion destruction to the pipeline and the annex (as oil nozzle, elbow, valve, plug etc.) thereof of ground flow.Show according to in-situ data, under the extreme case, only contained the sand jet at a high speed in two minutes and just pipe fitting can be pierced through, make that to contain sand flow body flow direction out of control, cause the surrounding environment severe contamination, consider that from security standpoint the leakage of natural gas also directly threatens the person and device security simultaneously; And the scene changes continually and is damaged pipe fitting, also increases working strength of workers and hidden danger, and not only efficient is low, and has increased unnecessary cost of production.
Three, summary of the invention
The utility model provides a kind of high-pressure large-displacement oil gas water desander filter, has overcome the deficiency of above-mentioned prior art, and it can effectively be removed in the oil gas well shaft and to contain sand and solid phase in the produced fluid.
The technical solution of the utility model realizes by following measure: a kind of high-pressure large-displacement oil gas water desander filter comprises flat cover, cylindrical shell and bar shaped cartridge filter; The lower end of flat cover and the upper end of cylindrical shell are fixedly installed togather, and the fluid inlet that communicates with cylinder lumen is arranged on cylindrical shell, and the fluid issuing that communicates with cylinder lumen is arranged on the cylindrical shell below the fluid inlet, and the sewage draining exit that communicates with cylinder lumen is arranged in the bottom of cylindrical shell; On the inwall of the cylinder lumen between fluid inlet and the fluid issuing, step is arranged, the inwall of the cylinder lumen of fluid issuing below is back taper, the lower surface of the convex platform of bar shaped cartridge filter withstands on the upper surface of step, the lower convex platform of bar shaped cartridge filter is inserted on the inwall of the cylinder lumen that is back taper, the convex platform of the upper end of screen pack and bar shaped cartridge filter links together, the lower convex platform of the lower end of screen pack and bar shaped cartridge filter links together, form filter chamber between the inwall of screen pack and cylinder lumen and communicate with fluid issuing, be installed with on the lower convex platform of bar shaped cartridge filter and can stop that the cartridge filter blind plate that fluid passes through maybe can open plate by the cartridge filter of fluid, opening at cartridge filter has the outlet that communicates with sewage draining exit on the plate.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
On the cylindrical shell between above-mentioned fluid issuing and the sewage draining exit the reverse scouring sluice that communicates with filter chamber can be arranged, the pressure meter through hole that communicates with cylinder lumen is arranged on flat cover.
In the above-mentioned cylinder lumen erosion control tube can be arranged, the upper end of erosion control tube withstands on the flat cover, and the lower end of erosion control tube withstands on the convex platform of bar shaped cartridge filter, and the import that communicates with fluid inlet is arranged on the erosion control tube.
On the inwall of the cylinder lumen between the lower convex platform of above-mentioned bar shaped cartridge filter and the sewage draining exit the annular gasket ring that communicates with sewage draining exit can be installed.
Above-mentioned bar shaped cartridge filter can comprise support bar; Be no less than inboard and gapped with screen pack at screen pack of one support bar, the convex platform of the upper end of support bar and bar shaped cartridge filter is fixed together, and the lower convex platform of the lower end of support bar and bar shaped cartridge filter is fixed together.
Between the convex platform of above-mentioned bar shaped cartridge filter and the sidewall of cylinder lumen sealing ring can be installed, between the lower convex platform of bar shaped cartridge filter and the sidewall of cylinder lumen sealing ring be installed.
Between above-mentioned flat cover and the cylindrical shell metal lip V-shaped ring can be installed, in the outside of flat cover the flat cover boss is arranged, the cylindrical shell boss corresponding with the flat cover boss arranged in the outside of cylindrical shell, clip and back clip before outside flat cover and cylindrical shell, having, in preceding clip and back clip, draw-in groove is arranged, flat cover boss and cylindrical shell boss are in draw-in groove, and preceding clip and back clip are installed together by fastening bolt and flat cover and cylindrical shell are tightened.
Can be installed with drop handle on the convex platform of above-mentioned bar shaped cartridge filter, on the sidewall of erosion control tube, be installed with drop handle.
The outside of above-mentioned cylindrical shell can be fixed on the roller slide rail, has air hoist to hang on the roller slide rail.
The leak gap of above-mentioned screen pack can be different leak gap such as 0.05 millimeter to 0.10 millimeter or 0.10 millimeter to 0.20 millimeter or 0.20 millimeter to 0.30 millimeter or 0.30 millimeter to 0.40 millimeter.
The utility model reasonable and compact in structure, easy to use, owing to can effectively remove in the oil gas well shaft and to contain sand and solid phase in the produced fluid, avoiding containing at a high speed the sand jet causes serious erosion and abrasion to destroy to the pipeline and the annex thereof of ground flow, and destroy the infringement that the fluid revealed the back causes the person and device security, therefore not only greatly reduce production safety hidden danger, and improved operating efficiency, also reduce field personnel's labour intensity, also reduced cost of production simultaneously.
Four, description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment when the cartridge filter blind plate is installed.
Accompanying drawing 2 is looked the sectional structure schematic diagram for the part master of the utility model most preferred embodiment when the installation cartridge filter is opened plate.
Accompanying drawing 3 be in the accompanying drawing 1 A to the part amplify the sectional structure schematic diagram.Accompanying drawing 4 be in the accompanying drawing 1 B to the part amplify the sectional structure schematic diagram.Accompanying drawing 5 for C-C in the accompanying drawing 1 to analyse and observe the structure for amplifying schematic diagram.Accompanying drawing 6 be in the accompanying drawing 1 D to the part amplify the sectional structure schematic diagram.Accompanying drawing 7 be in the accompanying drawing 1 E to the part amplify the sectional structure schematic diagram.
Coding in the accompanying drawing is respectively: 1 is flat cover, and 2 is cylindrical shell, and 3 is cylinder lumen, 4 is fluid inlet, and 5 is fluid issuing, and 6 is sewage draining exit, 7 is the inwall of cylinder lumen, and 8 is step, and 9 are the convex platform of bar shaped cartridge filter, 10 are the lower convex platform of bar shaped cartridge filter, and 11 is screen pack, and 12 is filter chamber, 13 is the cartridge filter blind plate, and 14 open plate for cartridge filter, and 15 is reverse scouring sluice, 16 is the erosion control tube, and 17 are import, and 18 is annular gasket ring, 19 is sealing ring, 20 is the metal lip V-shaped ring, and 21 is the flat cover boss, and 22 is the cylindrical shell boss, 23 is preceding clip, 24 is the back clip, and 25 is fastening bolt, and 26 is drop handle, 27 is the roller slide rail, 28 is the pressure meter through hole, and 29 is support bar, and 30 are outlet.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
Shown in accompanying drawing 1 to 8, this high-pressure large-displacement oil gas water desander filter comprises flat cover 1, cylindrical shell 2 and bar shaped cartridge filter; The upper end of the lower end of flat cover 1 and cylindrical shell 2 is fixedly installed togather, the fluid inlet 4 that communicates with cylinder lumen 3 is arranged on cylindrical shell 2, the fluid issuing 5 that communicates with cylinder lumen 3 is arranged on the cylindrical shell below the fluid inlet 42, the sewage draining exit 6 that communicates with cylinder lumen 3 is arranged in the bottom of cylindrical shell 2; On the inwall 7 of the cylinder lumen between fluid inlet 4 and the fluid issuing 5, step 8 is arranged, the inwall 7 of the cylinder lumen of fluid issuing 5 belows is back taper, the lower surface of the convex platform 9 of bar shaped cartridge filter withstands on the upper surface of step 8, the lower convex platform 10 of bar shaped cartridge filter is inserted on the inwall 7 of the cylinder lumen that is back taper, the convex platform 9 of the upper end of screen pack 11 and bar shaped cartridge filter links together, the lower convex platform 10 of the lower end of screen pack 11 and bar shaped cartridge filter links together, form filter chamber 12 between the inwall 7 of screen pack 11 and cylinder lumen and communicate with fluid issuing 5, on the lower convex platform 10 of bar shaped cartridge filter, be installed with and stop that the cartridge filter blind plate 13 that fluid passes through maybe can open plate 14 by the cartridge filter of fluid, opening at cartridge filter has the outlet 30 that communicates with sewage draining exit 6 on the plate 14, like this, containing the sand flow body enters in the cylinder lumen 3 from fluid inlet 4, because cylindrical shell 2 is sealed by flat cover 1, contain the sand flow body and enter the bar shaped cartridge filter, because stopping of screen pack 11, fluid passes from the gap of screen pack 11, flow out from fluid issuing 5, sand is filtered that net 11 stops and is lowered in the bar shaped cartridge filter in the effect of gravity.
Can according to actual needs above-mentioned high-pressure large-displacement oil gas water desander filter be made further optimization and/or improvements:
As shown in Figure 1,, on the cylindrical shell 2 between fluid issuing 5 and the sewage draining exit 6 the reverse scouring sluice 15 that communicates with filter chamber 12 is arranged, the pressure meter through hole 28 that communicates with cylinder lumen 3 is arranged on flat cover 1 for sediment outflow better.In filter chamber 12, inject highly pressurised liquid by reverse scouring sluice 15, the sand grains of bar shaped cartridge filter is washed away and drain.
Shown in accompanying drawing 1,3, washed away by sand for fear of cylindrical shell 2, erosion control tube 16 is arranged in cylinder lumen 3, the upper end of erosion control tube 16 withstands on the flat cover 1, the lower end of erosion control tube 16 withstands on the convex platform 9 of bar shaped cartridge filter, and the import 17 that communicates with fluid inlet 4 is arranged on the erosion control tube 16.
Shown in accompanying drawing 1,2; because the lower convex platform 10 of bar shaped cartridge filter is inserted on the inwall 7 of the cylinder lumen that is back taper and the bottom of the inwall 7 of no show cylinder lumen; cause the inwall 7 of cylinder lumen to be washed away by sand and to damage; on the inwall 7 of the cylinder lumen between the lower convex platform 10 of bar shaped cartridge filter and sewage draining exit 6 the annular gasket ring 18 that communicates with sewage draining exit 6 is installed, can protects the bottom of the inwall 7 of cylinder lumen to be washed away by sand and damage like this.
Shown in accompanying drawing 1,5,6,7, the bar shaped cartridge filter comprises support bar 29; Be no less than inboard and gapped with screen pack 11 at screen pack 11 of one support bar 29, the convex platform 9 of the upper end of support bar 29 and bar shaped cartridge filter is fixed together, and the lower convex platform 10 of the lower end of support bar 29 and bar shaped cartridge filter is fixed together.
As shown in Figure 1, in order to increase sealing, between the sidewall 7 of the convex platform 9 of bar shaped cartridge filter and cylinder lumen, sealing ring 19 is installed, between the lower convex platform 10 of bar shaped cartridge filter and the sidewall 7 of cylinder lumen sealing ring 19 is installed.
Shown in accompanying drawing 1,3,8, between flat cover 1 and the cylindrical shell 2 metal lip V-shaped ring 20 is installed, in the outside of flat cover 1 flat cover boss 21 is arranged, the cylindrical shell boss 22 corresponding with flat cover boss 21 arranged in the outside of cylindrical shell 2, clip 23 and back clip 24 before flat cover 1 and cylindrical shell 2 outsides have, in preceding clip 23 and back clip 24 draw-in groove is arranged, flat cover boss 21 and cylindrical shell boss 22 are in draw-in groove, and preceding clip 23 and back clip 24 are installed together by fastening bolt 25 and flat cover 1 and cylindrical shell 2 are tightened.
As shown in Figure 1,, on the convex platform 9 of bar shaped cartridge filter, be installed with drop handle 26, on the sidewall of erosion control tube 16, be installed with drop handle 26 for the ease of installing and taking out.
As shown in Figure 1, for the ease of operation, the outside of cylindrical shell 2 is fixed on the roller slide rail 27, on roller slide rail 27, there is air hoist to hang, like this, can be convenient to lift flat cover 1, bar shaped cartridge filter and erosion control tube 16, when clip 23 is with back clip 24 before dismounting, preceding clip 23 and back clip 24 can slide the frictional force when moving with minimizing on roller slide rail 27.
For satisfying the filtration requirement under the different condition, the gap width of screen pack 11 can be different leak gap such as 0.05 millimeter to 0.10 millimeter or 0.10 millimeter to 0.20 millimeter or 0.20 millimeter to 0.30 millimeter or 0.30 millimeter to 0.40 millimeter.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: fluid inlet 4 enters in the cylinder lumen 3, because cylindrical shell 2 is sealed by flat cover 1, contain the sand flow body and enter the bar shaped cartridge filter, because stopping of screen pack 11, fluid passes from the gap of screen pack 11, flow out from fluid issuing 5, sand is filtered that net 11 stops and is lowered in the bar shaped cartridge filter in the effect of gravity, when needs metering sand amount, fixed installation cartridge filter blind plate 13 on the lower convex platform 10 of bar shaped cartridge filter, sand can not be discharged from sewage draining exit 6, when filling sand in the bar shaped cartridge filter, fastening bolt 25 is taken apart clip 23 and back clip 24 before opening, open flat cover 1, hook drop handle 26 on the erosion control tube 16 with air hoist, hang out erosion control tube 16, hook drop handle 26 on the convex platform 9 of bar shaped cartridge filter with air hoist again, hang out the bar shaped cartridge filter, measure the work of sand amount; When carrying out sediment outflow work, the fixed installation cartridge filter is opened plate 14 on the lower convex platform 10 of bar shaped cartridge filter, because cartridge filter is opened and had sand export to communicate with sewage draining exit 6 on the plate 14, by the control device of operation sewage draining exit 6 table tops, just can control the sand production rate of sewage draining exit 6.
Claims (10)
- [claim 1] 1, a kind of high-pressure large-displacement oil gas water desander filter is characterized in that comprising flat cover, cylindrical shell and bar shaped cartridge filter; The lower end of flat cover and the upper end of cylindrical shell are fixedly installed togather, and the fluid inlet that communicates with cylinder lumen is arranged on cylindrical shell, and the fluid issuing that communicates with cylinder lumen is arranged on the cylindrical shell below the fluid inlet, and the sewage draining exit that communicates with cylinder lumen is arranged in the bottom of cylindrical shell; On the inwall of the cylinder lumen between fluid inlet and the fluid issuing, step is arranged, the inwall of the cylinder lumen of fluid issuing below is back taper, the lower surface of the convex platform of bar shaped cartridge filter withstands on the upper surface of step, the lower convex platform of bar shaped cartridge filter is inserted on the inwall of the cylinder lumen that is back taper, the convex platform of the upper end of screen pack and bar shaped cartridge filter links together, the lower convex platform of the lower end of screen pack and bar shaped cartridge filter links together, form filter chamber between the inwall of screen pack and cylinder lumen and communicate with fluid issuing, be installed with on the lower convex platform of bar shaped cartridge filter and can stop that the cartridge filter blind plate that fluid passes through maybe can open plate by the cartridge filter of fluid, opening at cartridge filter has the outlet that communicates with sewage draining exit on the plate.
- [claim 2] 2, high-pressure large-displacement oil gas water desander filter according to claim 1, it is characterized in that on the cylindrical shell between fluid issuing and the sewage draining exit the reverse scouring sluice that communicates with filter chamber being arranged, the pressure meter through hole that communicates with cylinder lumen is arranged on flat cover.
- [claim 3] 3, high-pressure large-displacement oil gas water desander filter according to claim 1 and 2, it is characterized in that the erosion control tube is arranged in the cylinder lumen, the upper end of erosion control tube withstands on the flat cover, the lower end of erosion control tube withstands on the convex platform of bar shaped cartridge filter, and the import that communicates with fluid inlet is arranged on the erosion control tube.
- On the inwall of the cylinder lumen between [claim 4] 4, the high-pressure large-displacement oil gas water desander filter according to claim 3, the lower convex platform that it is characterized in that the bar shaped cartridge filter and sewage draining exit the annular gasket ring that communicates with sewage draining exit is installed.
- [claim 5] 5, high-pressure large-displacement oil gas water desander filter according to claim 4 is characterized in that the bar shaped cartridge filter comprises support bar; Be no less than inboard and gapped with screen pack at screen pack of one support bar, the convex platform of the upper end of support bar and bar shaped cartridge filter is fixed together, and the lower convex platform of the lower end of support bar and bar shaped cartridge filter is fixed together.
- [claim 6] 6, high-pressure large-displacement oil gas water desander filter according to claim 5, it is characterized in that between the sidewall of the convex platform of bar shaped cartridge filter and cylinder lumen sealing ring being installed, between the lower convex platform of bar shaped cartridge filter and the sidewall of cylinder lumen sealing ring is installed.
- [claim 7] 7, high-pressure large-displacement oil gas water desander filter according to claim 6, it is characterized in that being equipped with between flat cover and the cylindrical shell metal lip V-shaped ring, in the outside of flat cover the flat cover boss is arranged, the cylindrical shell boss corresponding with the flat cover boss arranged in the outside of cylindrical shell, clip and back clip before outside flat cover and cylindrical shell, having, in preceding clip and back clip, draw-in groove is arranged, flat cover boss and cylindrical shell boss are in draw-in groove, and preceding clip and back clip are installed together by fastening bolt and flat cover and cylindrical shell are tightened.
- [claim 8] 8, high-pressure large-displacement oil gas water desander filter according to claim 7 is characterized in that being installed with drop handle on the convex platform of bar shaped cartridge filter, are installed with drop handle on the sidewall of erosion control tube.
- [claim 9] 9, high-pressure large-displacement oil gas water desander filter according to claim 8 is characterized in that the outside of cylindrical shell is fixed on the roller slide rail, have air hoist to hang on the roller slide rail.
- [claim 10] 10, high-pressure large-displacement oil gas water desander filter according to claim 9, the leak gap that it is characterized in that screen pack are different leak gap such as 0.05 millimeter to 0.10 millimeter or 0.10 millimeter to 0.20 millimeter or 0.20 millimeter to 0.30 millimeter or 0.30 millimeter to 0.40 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203012034U CN201212385Y (en) | 2008-06-18 | 2008-06-18 | High-pressure high flow rate oil, gas and water desander filtration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203012034U CN201212385Y (en) | 2008-06-18 | 2008-06-18 | High-pressure high flow rate oil, gas and water desander filtration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212385Y true CN201212385Y (en) | 2009-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203012034U Expired - Fee Related CN201212385Y (en) | 2008-06-18 | 2008-06-18 | High-pressure high flow rate oil, gas and water desander filtration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212385Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615229A (en) * | 2013-11-29 | 2014-03-05 | 中国石油集团西部钻探工程有限公司 | Well test belt pressing dust catcher |
| WO2015171333A1 (en) * | 2014-05-08 | 2015-11-12 | Baker Hughes Incorporated | Filter and related methods for use during wellbore operations |
| CN110043230A (en) * | 2019-05-27 | 2019-07-23 | 成都汇川新能科技有限公司 | A kind of shale gas exploitation desander |
| CN112027386A (en) * | 2020-09-22 | 2020-12-04 | 大庆市普罗石油科技有限公司 | Wellhead heating storage tank |
| US11173427B2 (en) | 2017-09-25 | 2021-11-16 | Sand Separation Technologies Inc. | Device for separating solids from a fluid stream |
| US11839884B2 (en) | 2018-09-06 | 2023-12-12 | Sand Separation Technologies Inc. | Counterflow vortex breaker |
-
2008
- 2008-06-18 CN CNU2008203012034U patent/CN201212385Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615229A (en) * | 2013-11-29 | 2014-03-05 | 中国石油集团西部钻探工程有限公司 | Well test belt pressing dust catcher |
| CN103615229B (en) * | 2013-11-29 | 2016-06-29 | 中国石油集团西部钻探工程有限公司 | Formation testing is with pressure catches bits device |
| WO2015171333A1 (en) * | 2014-05-08 | 2015-11-12 | Baker Hughes Incorporated | Filter and related methods for use during wellbore operations |
| US11173427B2 (en) | 2017-09-25 | 2021-11-16 | Sand Separation Technologies Inc. | Device for separating solids from a fluid stream |
| US11839884B2 (en) | 2018-09-06 | 2023-12-12 | Sand Separation Technologies Inc. | Counterflow vortex breaker |
| CN110043230A (en) * | 2019-05-27 | 2019-07-23 | 成都汇川新能科技有限公司 | A kind of shale gas exploitation desander |
| CN112027386A (en) * | 2020-09-22 | 2020-12-04 | 大庆市普罗石油科技有限公司 | Wellhead heating storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CNPC XIBU DRILLING ENGINEERING COMPANY LIMITED Free format text: FORMER OWNER: CNPC XINJIANG OILFIELD BRANCH TRIAL-OIL COMPANY Effective date: 20121228 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 834027 KARAMAY, XINJIANG UYGUR AUTONOMOUS REGION TO: 830026 URUMQI, XINJIANG UYGUR AUTONOMOUS REGION |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121228 Address after: 830026, No. 68 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Patentee after: CNPC Xibu Drilling Engineering Company Limited Address before: 834027 the Xinjiang Uygur Autonomous Region Karamay three Ping Town entrepreneurial Village Patentee before: CNPC Xinjiang Oilfield Branch Trial-oil Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20160618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |