CN203394452U - Continuous auxiliary gas lift drainage gas recovery compressor - Google Patents
Continuous auxiliary gas lift drainage gas recovery compressor Download PDFInfo
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- CN203394452U CN203394452U CN201320375848.3U CN201320375848U CN203394452U CN 203394452 U CN203394452 U CN 203394452U CN 201320375848 U CN201320375848 U CN 201320375848U CN 203394452 U CN203394452 U CN 203394452U
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Abstract
The utility model discloses a continuous auxiliary gas lift drainage gas recovery compressor, which belongs to the field of gas lift drainage gas recovery of an oil and gas field. The device is connected with an output pipeline at the mouth of a well, takes natural gas inside the well or a pipeline as engine power, and drives a gas compressor to inject the natural gas into a gas well oil jacket annular space. The device at least comprises a power unit, a first buffer tank, a second buffer tank, a flowmeter, a primary separator, a secondary separator, a tee joint, a related pipeline, a related connection hose and a related valve. During a gas injection process, liquid carrying capacity can be provided or increased, redundant gas cannot enter into a stratum, accumulated liquid in a shaft and an area close to the well can be gradually drained, and in addition, the accumulated liquid cannot be formed again. The power unit uses less gas, so that the production and operation cost can be effectively reduced; and a skid-mounted type is adopted to be integrated into a whole, so that field operation is convenient, simple and quick.
Description
Technical field
The utility model relates to oil gas field gaslift water pumping gas production field, particularly a kind of continuously auxiliary gaslift water pumping gas production compression set.
Background technology
Gas well is developed the middle and later periods, and because gas well strata pressure reduces, production capacity reduces, and gas fluid-carrying capability weakens, and pit shaft hydrops phenomenon is outstanding gradually, cannot realize blowing band liquid and produce.Water pumping gas production is solve near the stratum of Wellbore of Gas Wells and shaft bottom hydrops too much or produce water, and the measure that gas well is returned to normal production.
Conventionally take mechanical draining mode, reach the object of water pumping gas production, large discharge capacity gaslift is current effective artificial lift water pumping gas production mode, injects gases at high pressure reach and enumerate hydrops in well by short-term to pit shaft, is applicable to that watered-out well reproduces, the row of helping and gas reservoir draining.
In realizing process of the present utility model, inventor finds that prior art at least exists following problem:
Adopting large discharge capacity lift mode disadvantage is that equipment cost is high, fuel cost is high, gases at high pressure short-term enters shaft bottom can be pressed into stratum by partially liq, cause nearly pit shaft hydrops around, simultaneously because engineering time time is short, be unfavorable for the pit shaft discharge of formation water around, often in construction short-term, again form hydrops and stop production.
Summary of the invention
In order to solve the problem of prior art, the utility model embodiment provides a kind of continuously auxiliary gaslift water pumping gas production compression set.Can provide or increase fluid-carrying capability, be conducive to progressively discharge the hydrops of pit shaft and nearly well area, effectively reduce production run cost.Described technical scheme is as follows:
An auxiliary gaslift water pumping gas production compression set, this device is connected with well head external transport pipeline, take in well or pipeline natural gas is engine power, and drive gas compressor injects gas well oil jacket annular space by natural gas; This device at least comprises: powerplant module, the first surge tank, the second surge tank, flow meter, primary separator, second-stage separator, threeway and relevant pipeline, relevant connection flexible pipe, related valve.
Particularly, described relevant pipeline at least comprises: pipeline is switched in well head external transport pipeline, the personal gas pipeline of unit, compressed natural gas admission line, unstripped gas source, pipeline enters the station; The initiating terminal of described well head external transport pipeline connects in oil gas field well or the outer defeated gate valve of the natural gas well head of pipeline, and terminal connects the personal gas pipeline of described unit; The initiating terminal of described compressed natural gas admission line connects described well head external transport pipeline, and terminal is communicated with gas well oil jacket annular space; The initiating terminal that pipeline is switched in described unstripped gas source connects described threeway, and pipeline enters the station described in terminal connects.
Particularly, described relevant connection flexible pipe at least comprises: pipeline A flexible pipe, pipeline D flexible pipe, pipeline C the first flexible pipe, pipeline C the second flexible pipe, pipeline B flexible pipe.
Particularly, described related valve at least comprises: the defeated gate valve of stop valve, ball-and-seat, safety valve and outer wellhead, sewage globe valve; Described stop valve at least comprises: the first stop valve, the second stop valve, the 3rd stop valve, the 4th stop valve, the 5th stop valve, the 6th stop valve; Described ball-and-seat at least comprises: the first ball-and-seat, the second ball-and-seat; Described safety valve at least comprises: the first safety valve, the second safety valve.
Particularly, on described well head external transport pipeline, be provided with in turn described threeway, described the 3rd stop valve, described pipeline A flexible pipe, described the 5th stop valve, described primary separator, described the second stop valve, described the second ball-and-seat, described second-stage separator, described the first ball-and-seat, described the first stop valve; And be provided with described the first safety valve between described primary separator and described the second stop valve.
Particularly, the personal gas pipeline of described unit connects described the first stop valve, and connects described powerplant module by described pipeline flexible pipe.
Particularly, on described compressed natural gas admission line, be provided with in turn described the 4th stop valve, described flow meter, described pipeline C the first flexible pipe, described the first surge tank, described powerplant module, described the second surge tank, described pipeline C the second flexible pipe, described gas well oil jacket annular space; And be provided with described the second safety valve between described the second surge tank and described pipeline C the second flexible pipe.
Particularly, described unstripped gas source is switched pipeline and is provided with in turn described the 6th stop valve, described pipeline D flexible pipe, and connects described primary separator.
Particularly, described threeway connect described well head external transport pipeline, described unstripped gas source switch pipeline, described in the pipeline that enters the station.
Further, this device is integrated on a base with skid-mounted type.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The utility model embodiment is connected with well head external transport pipeline, by natural gas in well or in pipeline, provide fuel for powerplant module, drive compressor by natural gas compressing, by compressed natural gas admission line, on-the-spot natural gas long-time continuous is injected in oil sets annular space, can provide or increase fluid-carrying capability, unnecessary gas can not enter stratum, is conducive to progressively discharge the hydrops of pit shaft and nearly well area, and can again form hydrops.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the continuously auxiliary gaslift water pumping gas production compression set structural representation that the utility model embodiment provides.
In figure, each symbol represents that implication is as follows:
A well head external transport pipeline, the B unit gas pipeline of using by oneself, C compressed natural gas admission line, pipeline is switched in D unstripped gas source, the E pipeline that enters the station;
A stop valve, a1 the first stop valve, a2 the second stop valve, a3 the 3rd stop valve, a4 the 4th stop valve, a5 the 5th stop valve, a6 the 6th stop valve;
B ball-and-seat, b1 the first ball-and-seat, b2 the second ball-and-seat;
C safety valve, c1 the first safety valve, c2 the second safety valve;
The outer defeated gate valve of d natural gas well head;
E sewage globe valve;
F1 pipeline A flexible pipe, f2 pipeline D flexible pipe, f3 pipeline C the first flexible pipe, f4 pipeline C the second flexible pipe, f5 pipeline B flexible pipe;
1 powerplant module, 2 first surge tanks, 3 second surge tanks, 4 flow meters, 5 primary separators, 6 second-stage separators, 7 threeways, 8 gas well oil jacket annular spaces.
In figure, filled arrows direction is compressor unstrpped gas direction of advance; Hollow arrow direction is gas direction of advance to be compressed; Four-headed arrow direction is the source switching direction of compressor unstrpped gas; Unidirectional arrow direction is that compressor unstrpped gas enters the pipeline direction that enters the station.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Shown in Figure 1, the utility model embodiment provides a kind of continuously auxiliary gaslift water pumping gas production compression set, this device is connected with well head external transport pipeline, by in well or pipeline natural gas provide power for motor, drive gas compressor, on-the-spot natural gas long-time continuous is injected in oil sets annular space, the appropriate natural gas injecting can provide or increase fluid-carrying capability, unnecessary gas can not enter stratum, is conducive to progressively discharge the hydrops of pit shaft and nearly well area; This device at least comprises: powerplant module 1, the first surge tank 2, the second surge tank 3, flow meter 4, primary separator 5, second-stage separator 6, threeway 7 and relevant pipeline, relevant connection flexible pipe, related valve etc.; With skid-mounted type, be integrated on a unsplit bedplate in one, manufacture assembling in factory after, be placed near oil gas field well head block, connect many mouthfuls of individual wells and come gas pipeline and outer defeated production manifold, carry out oil-gas gathering and transportation, can use crowbar to carry out easily integrated moving, in place.
Described relevant pipeline at least comprises: pipeline D is switched in well head external transport pipeline A, unit personal gas pipeline B, compressed natural gas admission line C, unstripped gas source, pipeline E etc. enters the station.Particularly, the initiating terminal of described well head external transport pipeline A connects in oil gas field well or the outer defeated gate valve d of the natural gas well head of pipeline, and the outer defeated gate valve d of described natural gas well head connects sewage globe valve e; Described well head external transport pipeline A connects the personal gas pipeline B of unit according to filled arrows direction terminal; The initiating terminal of described compressed natural gas admission line C connects well head external transport pipeline A, according to hollow arrow direction terminal, is communicated with gas well oil jacket annular space 8; The initiating terminal connecting tee 7 of pipeline D is switched in described unstripped gas source, according to four-headed arrow direction terminal, connects the pipeline E that enters the station, in order to select source to switch.
Described relevant connection flexible pipe at least comprises: pipeline A flexible pipe f1, pipeline D flexible pipe f2, pipeline C the first flexible pipe f3, pipeline C the second flexible pipe f4, pipeline B flexible pipe f5.
Described related valve at least comprises: the defeated gate valve d of stop valve a, ball-and-seat b, safety valve c series and outer wellhead, sewage globe valve e etc.; Particularly, described stop valve a at least comprises: the first stop valve a1, the second stop valve a2, the 3rd stop valve a3, the 4th stop valve a4, the 5th stop valve a5, the 6th stop valve a6; Described ball-and-seat b at least comprises: the first ball-and-seat b1, the second ball-and-seat b2; Described safety valve c at least comprises: the first safety valve c1, the second safety valve c2.
Particularly, as preferably, on described well head external transport pipeline A, according to filled arrows direction, is provided with in turn threeway 7, the 3rd stop valve a3, pipeline A flexible pipe f1, the 5th stop valve a5, primary separator 5, the second stop valve a2, the second ball-and-seat b2, second-stage separator 6, the first ball-and-seat b1, the first stop valve a1; And be provided with the first safety valve c1 between primary separator 5 and the second stop valve a2; Described the first stop valve a1 connects the personal gas pipeline B of unit, and the personal gas pipeline B of unit connects powerplant module 1 by pipeline B flexible pipe f5; For connecting, pipeline D is switched in well head external transport pipeline A, unstripped gas source, pipeline E enters the station in described threeway 7.
Described powerplant module 1 is the complete prior art of oil gas field, mainly comprise natural gas engine, natural gas compressor, fluid power speed-reducing clutch, natural gas boosting machine, radiating cooler and control system etc., adopt skid-mounted type to be integrated in skid, by natural gas pretreatment process, supercharging flow process etc., for natural gas engine provides compression and equipment appurtenance, move power.
The personal gas pipeline B of described unit is in the well of powerplant module 1 conveying by well head external transport pipeline A or pipeline natural gas, the personal gas of powerplant module 1 own is about 25-30m3/h, and the large discharge capacity lift mode of comparing current employing greatly reduces fuel cost and production run cost.
Particularly, as preferably, on described compressed natural gas admission line C, according to hollow arrow direction, is provided with in turn the 4th stop valve a4, flow meter 4, pipeline C the first flexible pipe f3, the first surge tank 2, powerplant module 1, the second surge tank 3, pipeline C the second flexible pipe f4, gas well oil jacket annular space 8; And be provided with the second safety valve c2 between the second surge tank 3 and pipeline C the second flexible pipe f4.
Particularly, as preferably, on described unstripped gas source switching pipeline D, according to four-headed arrow direction, is provided with in turn the 6th stop valve a6, pipeline D flexible pipe f2, and connects primary separator 5.
The above various device, instrument, relevant pipeline, connecting hose, related valve etc. are prior art, buyable.
The operating principle of the utility model embodiment: in figure, filled arrows direction is that compressor unstrpped gas is advanced and enters compressed natural gas admission line B along well head external transport pipeline A; Hollow arrow direction is that gas to be compressed advances and enters gas well oil jacket annular space 8 along compressed natural gas admission line C; Four-headed arrow direction is the source switching direction of compressor unstrpped gas; Unidirectional arrow direction is that compressor unstrpped gas enters the pipeline direction that enters the station.
It is engine fuel that powerplant module 1 be take natural gas in well or in pipeline, drives natural gas compressor 1 that natural gas is compressed, and by threeway 9, is connected with well head external transport pipeline A; Adopt ready-packaged joint to be connected with well head.
During operation, first the outer defeated gate valve d of natural gas well head is closed, open the 3rd stop valve a3, primary separator 5, the second ball-and-seat b2, second-stage separator 6, the first ball-and-seat b1, the first stop valve a1 that compressor unstripped gas is communicated with in turn on well head external transport pipeline A, through unit, personal gas pipeline B, pipeline B flexible pipe f5 enter powerplant module 1; The compressor that starts powerplant module 1 boosts, open the 4th stop valve a4, unstrpped gas to be compressed enters compressor through flow meter 4, the first surge tank 2, gases at high pressure after compressor compresses enter compressed natural gas admission line C through the second surge tank 3, finally enter gas well oil jacket annular space 8 and carry out gaslift, improved oil pipe natural gas flow velocity, increased the fluid-carrying capability of gas well, can constantly pit shaft liquid have been taken out of; Switch in the source that can carry out unstripped gas by controlling threeway 9 and the 3rd stop valve a3, the 6th stop valve a6, opens the 5th stop valve a5, the 3rd stop valve a3 enters by liquid the pipeline E that enters the station by isolating in primary separator 5 after liquid.
Due to responding curve of well, unnecessary oil gas field can not enter stratum, in gas injection process, nearly wellbore formation liquid progresses into pit shaft, is taken equally out of continuous long-time construction by high speed natural gas, can take surrounding formation water enchroachment (invasion) liquid out of ground completely, complete water pumping gas production.
In addition, the utility model embodiment also tool have the following advantages:
1. the personal about 25-30m3/h of gas of powerplant module itself, has good economic benefit, greatly reduces production run cost;
2. critical piece is selected home equipment, and all parts are concentrated complete, and unit is concentrated into be prized in active box room, meets the requirement of oil field " production domesticization, skid ";
3. field operation is few, works easy, quick;
4. this device focuses on activation stratum energy, and renwing stratum gas, current state, both can be applicable to straight well, also can be applicable to directional well, has wide range of applications.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a continuous auxiliary gaslift water pumping gas production compression set, this device is connected with well head external transport pipeline, take in well or pipeline natural gas is engine power, and drive gas compressor injects gas well oil jacket annular space by natural gas; It is characterized in that, this device at least comprises: powerplant module (1), the first surge tank (2), the second surge tank (3), flow meter (4), primary separator (5), second-stage separator (6), threeway (7) and relevant pipeline, relevant connection flexible pipe, related valve.
2. continuously auxiliary gaslift water pumping gas production compression set according to claim 1, it is characterized in that, described relevant pipeline at least comprises: pipeline (D), the pipeline that enters the station (E) are switched in well head external transport pipeline (A), the personal gas pipeline (B) of unit, compressed natural gas admission line (C), unstripped gas source; The initiating terminal of described well head external transport pipeline (A) connects in oil gas field well or the outer defeated gate valve (d) of the natural gas well head of pipeline, and terminal connects the personal gas pipeline (B) of described unit; The initiating terminal of described compressed natural gas admission line (C) connects described well head external transport pipeline (A), and terminal is communicated with gas well oil jacket annular space (8); The initiating terminal that pipeline (D) is switched in described unstripped gas source connects described threeway (7), and pipeline (E) enters the station described in terminal connects.
3. continuously auxiliary gaslift water pumping gas production compression set according to claim 1, it is characterized in that, described relevant connection flexible pipe at least comprises: pipeline A flexible pipe (f1), pipeline D flexible pipe (f2), pipeline C the first flexible pipe (f3), pipeline C the second flexible pipe (f4), pipeline B flexible pipe (f5).
4. continuously auxiliary gaslift water pumping gas production compression set according to claim 1, it is characterized in that, described related valve at least comprises: stop valve (a), ball-and-seat (b), safety valve (c) and the defeated gate valve of outer wellhead (d), sewage globe valve (e); Described stop valve (a) at least comprises: the first stop valve (a1), the second stop valve (a2), the 3rd stop valve (a3), the 4th stop valve (a4), the 5th stop valve (a5), the 6th stop valve (a6); Described ball-and-seat (b) at least comprises: the first ball-and-seat (b1), the second ball-and-seat (b2); Described safety valve (c) at least comprises: the first safety valve (c1), the second safety valve (c2).
5. according to the continuously auxiliary gaslift water pumping gas production compression set described in claim 1-4 any one, it is characterized in that, on described well head external transport pipeline (A), be provided with in turn described threeway (7), described the 3rd stop valve (a3), described pipeline A flexible pipe (f1), described the 5th stop valve (a5), described primary separator (5), described the second stop valve (a2), described the second ball-and-seat (b2), described second-stage separator (6), described the first ball-and-seat (b1), described the first stop valve (a1); And be provided with described the first safety valve (c1) being positioned between described primary separator (5) and described the second stop valve (a2).
6. according to the continuously auxiliary gaslift water pumping gas production compression set described in claim 1-4 any one, it is characterized in that, the described unit gas pipeline (B) of using by oneself connects described the first stop valve (a1), and connects described powerplant module (1) by described pipeline (B) flexible pipe (f5).
7. according to the continuously auxiliary gaslift water pumping gas production compression set described in claim 1-4 any one, it is characterized in that, on described compressed natural gas admission line (C), be provided with in turn described the 4th stop valve (a4), described flow meter (4), described pipeline C the first flexible pipe (f3), described the first surge tank (2), described powerplant module (1), described the second surge tank (3), described pipeline C the second flexible pipe (f4), described gas well oil jacket annular space (8); And be provided with described the second safety valve (c2) being positioned between described the second surge tank (3) and described pipeline C the second flexible pipe (f4).
8. according to the continuously auxiliary gaslift water pumping gas production compression set described in claim 1-4 any one, it is characterized in that, on described unstripped gas source switching pipeline (D), be provided with in turn described the 6th stop valve (a6), described pipeline D flexible pipe (f2), and connect described primary separator (5).
9. continuously auxiliary gaslift water pumping gas production compression set according to claim 1 and 2, it is characterized in that, described threeway (7) connect described well head external transport pipeline (A), described unstripped gas source switch pipeline (D), described in the pipeline (E) that enters the station.
10. continuously auxiliary gaslift water pumping gas production compression set according to claim 1, is characterized in that, this device is integrated on a base with skid-mounted type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320375848.3U CN203394452U (en) | 2013-06-27 | 2013-06-27 | Continuous auxiliary gas lift drainage gas recovery compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320375848.3U CN203394452U (en) | 2013-06-27 | 2013-06-27 | Continuous auxiliary gas lift drainage gas recovery compressor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912253A (en) * | 2014-03-20 | 2014-07-09 | 西安长庆科技工程有限责任公司 | Gas well single well gas recovery system and low-pressure recovery method thereof |
| CN104295237A (en) * | 2014-08-13 | 2015-01-21 | 中国石油集团渤海钻探工程有限公司 | Continuous gas lift liquid drain system and method in gas drilling process |
| CN107387035A (en) * | 2017-09-13 | 2017-11-24 | 吉林大学 | Gas injection High Pressure Drain system in a kind of well |
| CN107532468A (en) * | 2014-10-06 | 2018-01-02 | 通用电气石油和天然气公司 | System and method for compressing and adjusting the hydrocarbon gas |
| CN109854214A (en) * | 2019-03-08 | 2019-06-07 | 江苏丰泰流体机械科技有限公司 | A kind of synchronous revolving water drainage gas production device |
| CN110318711A (en) * | 2019-07-11 | 2019-10-11 | 河南柴油机重工有限责任公司 | A kind of fluid-discharge method and device of the oil/gas well of low yield containing liquid |
| CN112012702A (en) * | 2020-10-23 | 2020-12-01 | 盘锦华晨石油装备制造有限公司 | Pressurization and yield increase system for low-pressure gas well |
| CN114991723A (en) * | 2022-06-16 | 2022-09-02 | 西南石油大学 | Gas lift system based on oil and gas exploitation |
| CN115182707A (en) * | 2022-06-30 | 2022-10-14 | 中石化石油工程技术服务有限公司 | Compressed gas drainage and production recovery gas testing system and using method thereof |
| CN115306357A (en) * | 2022-08-23 | 2022-11-08 | 北京中海沃邦能源投资有限公司 | Gas well pressure boost gas lift gas production tree air inlet joint |
| CN117948103A (en) * | 2024-03-25 | 2024-04-30 | 洛阳宏润塑业有限公司 | Oilfield gas production pressurization system and process thereof |
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- 2013-06-27 CN CN201320375848.3U patent/CN203394452U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103912253A (en) * | 2014-03-20 | 2014-07-09 | 西安长庆科技工程有限责任公司 | Gas well single well gas recovery system and low-pressure recovery method thereof |
| CN104295237A (en) * | 2014-08-13 | 2015-01-21 | 中国石油集团渤海钻探工程有限公司 | Continuous gas lift liquid drain system and method in gas drilling process |
| CN107532468A (en) * | 2014-10-06 | 2018-01-02 | 通用电气石油和天然气公司 | System and method for compressing and adjusting the hydrocarbon gas |
| CN107532468B (en) * | 2014-10-06 | 2021-03-19 | 通用电气石油和天然气公司 | System and method for compressing and conditioning hydrocarbon gas |
| CN107387035A (en) * | 2017-09-13 | 2017-11-24 | 吉林大学 | Gas injection High Pressure Drain system in a kind of well |
| CN109854214A (en) * | 2019-03-08 | 2019-06-07 | 江苏丰泰流体机械科技有限公司 | A kind of synchronous revolving water drainage gas production device |
| CN110318711B (en) * | 2019-07-11 | 2023-06-30 | 河南柴油机重工有限责任公司 | Liquid draining method and device for liquid-containing low-yield oil-gas well |
| CN110318711A (en) * | 2019-07-11 | 2019-10-11 | 河南柴油机重工有限责任公司 | A kind of fluid-discharge method and device of the oil/gas well of low yield containing liquid |
| CN112012702A (en) * | 2020-10-23 | 2020-12-01 | 盘锦华晨石油装备制造有限公司 | Pressurization and yield increase system for low-pressure gas well |
| CN114991723A (en) * | 2022-06-16 | 2022-09-02 | 西南石油大学 | Gas lift system based on oil and gas exploitation |
| CN115182707A (en) * | 2022-06-30 | 2022-10-14 | 中石化石油工程技术服务有限公司 | Compressed gas drainage and production recovery gas testing system and using method thereof |
| CN115306357A (en) * | 2022-08-23 | 2022-11-08 | 北京中海沃邦能源投资有限公司 | Gas well pressure boost gas lift gas production tree air inlet joint |
| CN115306357B (en) * | 2022-08-23 | 2024-01-05 | 北京中海沃邦能源投资有限公司 | Gas well pressurization gas lift gas production tree air inlet joint |
| CN117948103A (en) * | 2024-03-25 | 2024-04-30 | 洛阳宏润塑业有限公司 | Oilfield gas production pressurization system and process thereof |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20210627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |