CN106401520B - A kind of thick oil production measuring well head device - Google Patents
A kind of thick oil production measuring well head device Download PDFInfo
- Publication number
- CN106401520B CN106401520B CN201611041493.9A CN201611041493A CN106401520B CN 106401520 B CN106401520 B CN 106401520B CN 201611041493 A CN201611041493 A CN 201611041493A CN 106401520 B CN106401520 B CN 106401520B
- Authority
- CN
- China
- Prior art keywords
- pipe
- oil pipe
- oil
- shell
- well head
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 68
- 239000000295 fuel oil Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of thick oil production measuring well head devices, including shell, the shell is cylindric, the shell upper end is set there are four through-hole, oil pipe, test pipe and two fixing pipes are respectively equipped in the through-hole, the both ends of the fixing pipe are equipped with fixture nut, and the oil pipe upper end is equipped with control valve；Vibrating spring, the vibrating spring are each provided on oil-pipe external wall to be multiple, and the both ends of the vibrating spring are equipped with terminal pad, and the lower end of the oil pipe is equipped with casing flange；Fixing piece, the upper and lower of the both ends of the shell are equipped with fixing piece；The fixing piece is annular hollow structure.The present invention passes through fixing piece, keep device stronger on well head, pass through the effect of vibrating spring and terminal pad on oil pipe again, a possibility that reducing oil pipe blocking, control valve can control flow velocity, test is managed so that tester is not interfere with each other with oil pipe, to improve oil production rate, extends the service life of oil pipe.
Description
Technical field
The present invention relates to well recovery wellhead assembly technical field more particularly to a kind of thick oil production measuring well head devices.
Background technique
Viscous crude is as its name suggests a kind of more sticky petroleum；Because of its viscosity height, density is big, external to be generally referred to asHeavy oil, we are accustomed to being referred to as viscous crude, this is named with respect to thin oil；The intuitive comparison of viscous crude and thin oil, we can see
It is flowed as water to thin oil, and viscous crude is difficult to flow, caused by this is viscosity of thickened oil height, some viscosity of thickened oil are up to several hundred
Ten thousand mpas, as " black mud ", can use spade, picked up with hand, with science language say, be exactly the mobility of viscous crude too
Difference, oil sticky in this way are difficult to produce from underground naturally.
Currently, wellhead assembly is all made of single-turn formula shaft mouth test apparatus in heavy oil wells exploitation, though single-turn formula test device
So to test equipment using more convenient, still, due to the characteristic of viscous crude, it is easier at wellhead assembly oil pipe occur stifled
Fill in phenomenon；Through retrieving, application number：200420030450.7；Publication number：2687333；Denomination of invention：A kind of heavy oil production test
Wellhead assembly；A kind of thick oil production measuring well head device is disclosed, during the test, because of hole deviation, the reasons such as bending make viscous crude
Oil pipe generates bending in well, currently, due to testing well using fixed or single-turn formula wellhead assembly exist test it is inconvenient with
And the drawbacks such as poorly sealed, it affects test and carries out, the present invention is to overcome this disadvantage and use in tubing hanger equipped with upper and lower
The structures such as eccentric bushing and plane ball axis realize oil pipe rotation and eccentric tubing string rotation, enable its instrument connection in casing
Heart rotation achievees the purpose that prevent test rope in well because of coiled tubing or resistance, card；The rotatable oil pipe of people is to prevent oil
Pipe is blocked in oil pumping, but increases labour cost simultaneously, wastes natural resources.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of thick oil production measuring well head device, by the effect of vibrating spring and terminal pad on oil pipe,
A possibility that reducing oil pipe blocking.
A kind of thick oil production measuring well head device according to an embodiment of the present invention, including shell, the shell be it is cylindric,
The shell upper end is set there are four through-hole, and oil pipe, test pipe and two fixing pipes, the fixation are respectively equipped in the through-hole
The both ends of pipe are equipped with fixture nut, and the oil pipe upper end is equipped with control valve；Vibrating spring, the vibrating spring are multiple equal
It is located on oil-pipe external wall, the both ends of the vibrating spring are equipped with terminal pad, and the lower end of the oil pipe is equipped with casing flange；Gu
Determine part, the upper and lower of the both ends of the shell is equipped with fixing piece；The fixing piece is annular hollow structure.
In some embodiments of the invention, the test is equipped with built-in buckle with pipe and housing through-hole junction.
In other embodiments of the invention, the terminal pad is equipped with spiral rubber hose close to vibrating spring one end,
The spiral rubber hose, oil pipe and terminal pad flanged joint.
In other embodiments of the invention, the fixture nut and housing junction are equipped with one layer of rubber pad.
In other embodiments of the invention, the fixing pipe is hollow structure, and using made by alloy material.
Beneficial effect in the present invention is：Four through-holes on shell are respectively equipped with oil pipe, test pipe, two fixations
Oil pipe and test pipe are separated, prevent tester that line is wrapped on oil pipe in underground work by pipe, and oil pipe is equipped with multiple
Terminal pad is equipped with vibrating spring between terminal pad, when oil pipe is in transport of thick oil, under vibrating spring effect, shakes up and down, vibration
The spiral rubber hose in spring of moving is also constantly to stretch and shrink, and increases retractility of the viscous crude in pipeline, to drop
A possibility that low oil pipe blocking, the service life of oil pipe is extended, the casing flange of oil pipe lower end is casing connection well head
A kind of conversion equipment, for connecting used in oil recovery four-way；The present invention keeps device more firm on well head by fixing piece
Gu then by the effect of vibrating spring and terminal pad on oil pipe, a possibility that reducing oil pipe blocking, control valve controllable flow
Speed, test are managed so that tester is not interfere with each other with oil pipe, to improve oil production rate, extend the service life of oil pipe.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of structure sectional view of thick oil production measuring well head device proposed by the present invention.
Fig. 2 is a kind of structural schematic diagram of thick oil production measuring well head device vibrating spring proposed by the present invention.
In figure：1 shell, 2 oil pipes, 3 control valves, 4 terminal pads, 5 vibrating springs, 6 test pipes, 7 fixing pipes, 8 casings
Flange, 9 fixing pieces.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-2, a kind of thick oil production measuring well head device, including shell 1, shell 1 are cylindric, 1 upper end of shell
If being respectively equipped with oil pipe 2, test pipe 6 and two fixing pipes 7 in through-hole there are four through-hole, the both ends of fixing pipe 7 are equipped with solid
Determine nut, 2 upper end of oil pipe is equipped with control valve 3.
Vibrating spring 5 be it is multiple, be each provided on 2 outer wall of oil pipe, the upper and lower ends of vibrating spring 5 are equipped with terminal pad 4.
It is equipped with casing flange in the lower end of the oil pipe 2, to connect with connector.
It further include fixing piece 9, the upper and lower ends of shell 1 are equipped with fixing piece 9, to be fixed on well head；Fixing piece 9 is to prolong
Stretch out the annular hollow structure of the shell 1.In the present embodiment, the fixing piece 9 is hanging ring, respectively by screw or
Person's connection structure is fixed on well head；The fixing piece 9 is integrally formed with shell or is connected and fixed with shell 1.
The through-hole junction of the test pipe 6 and shell 1 is equipped with built-in buckle；Test pipe 6 can also pass through two
The nut at end is fixedly connected with shell 1.
Terminal pad 4 is equipped with spiral rubber hose, spiral rubber hose, oil pipe 2 and terminal pad 4 close to 5 one end of vibrating spring
Flanged joint；Fixture nut and 1 junction of shell are equipped with one layer of rubber pad；Fixing pipe 7 is hollow structure, and uses alloy material
It is made.
Four vertical through-holes on shell 1 are respectively equipped with 6, two oil pipe 2, test pipe fixing pipes 7, by oil pipe 1 with
Test is separated with pipe 6, prevents tester that line is wrapped on oil pipe 1 in underground work, and oil pipe 1 is equipped with multiple terminal pads 4,
Vibrating spring 5 is equipped between terminal pad 4.
When oil pipe 2 is in transport of thick oil, in the case where vibrating spring 5 acts on, shake up and down, the spiral rubber in vibrating spring 5
Hose is also constantly to stretch and shrink, and increases retractility of the viscous crude in pipeline, to reduce the possibility of the blocking of oil pipe 2
Property, the service life of oil pipe 2 is extended, the casing flange 8 of 2 lower end of oil pipe is a kind of conversion equipment of casing connection well head, is used
Used in connection oil recovery four-way.
The present invention keeps device stronger on well head by fixing piece 9, then by vibrating spring 5 and terminal pad 4 in oil
Effect on pipe 2 reduces a possibility that oil pipe 2 blocks, and control valve 3 can control flow velocity, and test pipe 6 makes tester and oil
Pipe 2 is not interfere with each other, to improve oil production rate, extends the service life of oil pipe 2.
A kind of thick oil production measuring well head device, the stability of fixing piece 9 reinforcing well head and device, spiral rubber hose,
Oil pipe 2 and 4 flanged joint of terminal pad, leakproofness is preferable, soft by terminal pad 4 on oil pipe 2, vibrating spring 5 and spiral rubber
The cooperation of pipe greatly reduces a possibility that oil pipe 2 blocks, while also increasing the flexibility and service life of oil pipe 2, tests
With pipe 6 by it is built-in buckle be fixed in the through-hole of shell 1, by oil pipe 2 and tester work position separate, reduce between
Influence, casing flange 8 is a kind of conversion equipment of casing connection wellhead installation, and lower end is on screw thread can be screwed into casing head
End is 12 holes, for connecting oil recovery four-way or gas injection four-way uses, can preferably transfer out in well viscous crude, improves
Production efficiency, the device subtract stifled, the specific thinking of the division of labor using vibration, produce suitable for modern heavy oil production shaft mouth test dress
It sets, contributes a component amount for the progress of viscous crude acquisition scheme.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.The preferably specific implementation of the above, the only present invention
Mode, but scope of protection of the present invention is not limited thereto, anyone skilled in the art the invention discloses
Technical scope in, be subject to equivalent substitution or change according to the technical scheme of the invention and its inventive conception, should all cover this
Within the protection scope of invention.
Claims (5)
1. a kind of thick oil production measuring well head device, which is characterized in that including：
Shell, the shell be it is cylindric, the shell upper end is set there are four through-hole, and oil pipe is respectively equipped in the through-hole, is surveyed
Pipe on probation and two fixing pipes, the both ends of the fixing pipe are equipped with fixture nut, and the oil pipe upper end is equipped with control valve；
Vibrating spring, the vibrating spring are each provided on oil-pipe external wall to be multiple, and the both ends of the vibrating spring are equipped with company
Disk is connect, the lower end of the oil pipe is equipped with casing flange；
Fixing piece, the upper and lower of the both ends of the shell are equipped with fixing piece；The fixing piece is annular hollow structure；
Oil pipe in the vibrating spring is spiral rubber hose.
2. a kind of thick oil production measuring well head device according to claim 1, it is characterised in that：The test pipe and shell
Body through-hole junction is equipped with built-in buckle.
3. a kind of thick oil production measuring well head device according to claim 1, it is characterised in that：The terminal pad is close to vibration
Dynamic spring one end is equipped with spiral rubber hose, the spiral rubber hose, oil pipe and terminal pad flanged joint.
4. a kind of thick oil production measuring well head device according to claim 1, it is characterised in that：The fixture nut and shell
Body junction is equipped with one layer of rubber pad.
5. a kind of thick oil production measuring well head device according to claim 1, it is characterised in that：The fixing pipe is hollow
Structure, and using made by alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041493.9A CN106401520B (en) | 2016-11-22 | 2016-11-22 | A kind of thick oil production measuring well head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041493.9A CN106401520B (en) | 2016-11-22 | 2016-11-22 | A kind of thick oil production measuring well head device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106401520A CN106401520A (en) | 2017-02-15 |
| CN106401520B true CN106401520B (en) | 2018-11-16 |
Family
ID=58082437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611041493.9A Expired - Fee Related CN106401520B (en) | 2016-11-22 | 2016-11-22 | A kind of thick oil production measuring well head device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106401520B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB974536A (en) * | 1961-10-05 | 1964-11-04 | Fmc Corp | Improvements in or relating to well hanger support structures |
| US3545540A (en) * | 1969-07-22 | 1970-12-08 | North American Rockwell | Through-the-flowline(tfl)tool cartridge assembly |
| CA2303058A1 (en) * | 2000-03-28 | 2001-09-28 | L. Murray Dallas | Blowout preventer protector and method of using same |
| CN2687333Y (en) * | 2004-02-20 | 2005-03-23 | 辽河石油勘探局 | Thick oil production measuring well head device |
| CN201991519U (en) * | 2011-03-28 | 2011-09-28 | 中国石油天然气股份有限公司 | Double-pipe testing wellhead device |
| CN203230370U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
| CN203239296U (en) * | 2013-05-16 | 2013-10-16 | 尤尼斯油气技术（中国）有限公司 | Fireflooding double-pipe shaft mouth oil extraction pipe column |
| CN203321472U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Double-barrelled wellhead assembly of viscous crude thermal recovery |
| CN103790541A (en) * | 2013-03-28 | 2014-05-14 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479204Y (en) * | 2001-04-29 | 2002-02-27 | 中国石油天然气股份有限公司 | Ultra-thick oil injection-production and flushing-prevention integrated pipe column |
| CN204457706U (en) * | 2014-12-26 | 2015-07-08 | 中国石油天然气股份有限公司 | Same-well injection-production thermal oil production pipe column for vertical well |
-
2016
- 2016-11-22 CN CN201611041493.9A patent/CN106401520B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB974536A (en) * | 1961-10-05 | 1964-11-04 | Fmc Corp | Improvements in or relating to well hanger support structures |
| US3545540A (en) * | 1969-07-22 | 1970-12-08 | North American Rockwell | Through-the-flowline(tfl)tool cartridge assembly |
| CA2303058A1 (en) * | 2000-03-28 | 2001-09-28 | L. Murray Dallas | Blowout preventer protector and method of using same |
| CN2687333Y (en) * | 2004-02-20 | 2005-03-23 | 辽河石油勘探局 | Thick oil production measuring well head device |
| CN201991519U (en) * | 2011-03-28 | 2011-09-28 | 中国石油天然气股份有限公司 | Double-pipe testing wellhead device |
| CN203230370U (en) * | 2013-03-28 | 2013-10-09 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
| CN103790541A (en) * | 2013-03-28 | 2014-05-14 | 中国石油天然气股份有限公司 | Three-position multifunctional three-pipe wellhead device |
| CN203239296U (en) * | 2013-05-16 | 2013-10-16 | 尤尼斯油气技术（中国）有限公司 | Fireflooding double-pipe shaft mouth oil extraction pipe column |
| CN203321472U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Double-barrelled wellhead assembly of viscous crude thermal recovery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106401520A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6320296B2 (en) | Method for measuring fluid in underground wells | |
| US9915144B2 (en) | Production logging tool with multi-sensor array | |
| US8342238B2 (en) | Coaxial electric submersible pump flow meter | |
| CN109611081A (en) | Instrument while drilling fluid pressure measuring device | |
| BR112021000519A2 (en) | DATA ACQUISITION AND COMMUNICATION DEVICE BETWEEN COLUMNS OF OIL OR GAS WELLS | |
| CN106401520B (en) | A kind of thick oil production measuring well head device | |
| CN105408580B (en) | Composite fluid pumps joint and hanger locking tool | |
| US9988887B2 (en) | Metal bellows equalizer capacity monitoring system | |
| CN105089622B (en) | Horizontal well rod conveying logging process rod pipe column | |
| CN104196522B (en) | A kind of slurry pulsator dummy packing assembly | |
| CN110244078A (en) | A Downhole Bubble Velocity Sensor Based on the Principle of Friction Nano Power Generation | |
| CN205858325U (en) | Eccentricity pressure meter torr cylinder | |
| CN102536198B (en) | Electrode measuring pushing-against mechanism of casing-through resistivity logging instrument | |
| CN201059188Y (en) | Flexible connector base-piece and flexible connector | |
| CN104863582A (en) | Full-collecting umbrella for oil well produced liquid profile testing | |
| CN203978350U (en) | Oil pipe machinery locator | |
| CN106323237A (en) | Simple angulometer for measuring mining drilling angle and operation method thereof | |
| CN208416519U (en) | A kind of underground sucker rod column parameter tester | |
| RU86658U1 (en) | AXIAL CUT TEMPLATE | |
| CN108252679A (en) | One kind, which is tested, alters packer | |
| CN104675384B (en) | The passive magnetic combination vibration absorber of directional tool | |
| CN203729908U (en) | Centralizer | |
| CN213627561U (en) | Length-adjustable drift size gauge with pressure measurement | |
| CN108590632A (en) | A kind of underground sucker rod column parameter tester | |
| CN104314535A (en) | Zonal injection allocator with inner magnetic flow meters and butting charge and wireless transmission functions and use method of injection allocator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20191122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |