CN110501266B - 一种评价支撑剂砂堆纵向变形的方法 - Google Patents
一种评价支撑剂砂堆纵向变形的方法 Download PDFInfo
- Publication number
- CN110501266B CN110501266B CN201910925235.4A CN201910925235A CN110501266B CN 110501266 B CN110501266 B CN 110501266B CN 201910925235 A CN201910925235 A CN 201910925235A CN 110501266 B CN110501266 B CN 110501266B
- Authority
- CN
- China
- Prior art keywords
- proppant
- deformation
- meshes
- sand
- sand pile
- 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.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 36
- 238000009826 distribution Methods 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 5
- 238000011156 evaluation Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 80
- 239000010432 diamond Substances 0.000 description 27
- 229910003460 diamond Inorganic materials 0.000 description 27
- 239000006004 Quartz sand Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0087—Resistance to crushing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
压力/Mpa | 左位移/mm | 右位移/mm | 平均/mm | 测量宽度/mm |
0.6 | 0 | 0 | 0 | 17.7925 |
6.9 | 1.2689 | 1.276 | 1.27245 | 16.52005 |
13.8 | 1.604 | 1.605 | 1.6045 | 16.188 |
20.7 | 1.778 | 1.7685 | 1.77325 | 16.01925 |
27.6 | 1.8964 | 1.8612 | 1.8788 | 15.9137 |
34.5 | 1.9878 | 1.946 | 1.9669 | 15.8256 |
41.4 | 2.0805 | 2.0354 | 2.05795 | 15.73455 |
48.3 | 2.1503 | 2.1004 | 2.12535 | 15.66715 |
55.2 | 2.2086 | 2.1568 | 2.1827 | 15.6098 |
62.1 | 2.266 | 2.2149 | 2.24045 | 15.55205 |
69 | 2.3217 | 2.2717 | 2.2967 | 15.4958 |
铺砂浓度(kg/m<sup>2</sup>) | 20/40目 | 30/50目 | 40/70目 |
3 | 22.7% | 16.5% | 13.1% |
5 | 15.8% | 14.5% | 9.7% |
7 | 14.3% | 6.6% | 6.5% |
10 | 16.1% | 8.2% | 7.8% |
铺砂浓度(kg/m<sup>2</sup>) | 破碎比例 |
3 | 39.8% |
5 | 34.1% |
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910925235.4A CN110501266B (zh) | 2019-09-27 | 2019-09-27 | 一种评价支撑剂砂堆纵向变形的方法 |
US16/805,662 US10823646B1 (en) | 2019-09-27 | 2020-02-28 | Method for evaluating the longitudinal deformation of proppant pack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910925235.4A CN110501266B (zh) | 2019-09-27 | 2019-09-27 | 一种评价支撑剂砂堆纵向变形的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110501266A CN110501266A (zh) | 2019-11-26 |
CN110501266B true CN110501266B (zh) | 2020-02-28 |
Family
ID=68592952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910925235.4A Active CN110501266B (zh) | 2019-09-27 | 2019-09-27 | 一种评价支撑剂砂堆纵向变形的方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US10823646B1 (zh) |
CN (1) | CN110501266B (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110905497B (zh) * | 2019-12-11 | 2022-10-28 | 东北石油大学 | 一种页岩网状裂缝长期导流能力测定装置 |
CN114547950B (zh) * | 2022-04-15 | 2022-07-22 | 西南石油大学 | 一种考虑页岩软化作用预测支撑剂嵌入深度的计算方法 |
CN115372089B (zh) * | 2022-07-25 | 2024-06-18 | 西南石油大学 | 一种压裂后粗糙裂缝闭合过程中裂缝柔度的测试方法 |
CN117266821B (zh) * | 2023-09-20 | 2024-04-02 | 东北石油大学 | 油气储层条件下支撑剂破碎率实时测定方法 |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101519961A (zh) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | 支撑剂嵌入深度的测量装置及测量方法 |
CN102606126A (zh) * | 2012-03-27 | 2012-07-25 | 东方宝麟科技发展(北京)有限公司 | 裂缝性储层非平面网络裂缝压裂控制方法 |
CN102749436A (zh) * | 2012-07-24 | 2012-10-24 | 东北石油大学 | 研究压裂液配制及岩体断裂分形特征测定装置 |
CN104080881A (zh) * | 2011-11-08 | 2014-10-01 | 索尔维特殊聚合物美国有限责任公司 | 支撑剂颗粒以及在地下应用中使用此类颗粒的方法 |
CN204294863U (zh) * | 2014-12-18 | 2015-04-29 | 蒋斌 | 一种低密度的树脂覆膜砂 |
CN104769075A (zh) * | 2012-11-02 | 2015-07-08 | 瓦克化学股份公司 | 作为石油和天然气井支撑剂的硅树脂改性的酚醛树脂 |
CN105134186A (zh) * | 2015-08-18 | 2015-12-09 | 中国地质大学(武汉) | 页岩气水力压裂物理模拟试验系统 |
CN105510165A (zh) * | 2015-12-04 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司 | 非连续铺砂裂缝缝内支撑剂砂团冲蚀评价装置及测试方法 |
CN106255804A (zh) * | 2014-04-30 | 2016-12-21 | 优选技术有限责任公司 | 支撑剂混合物 |
CN106459742A (zh) * | 2014-04-23 | 2017-02-22 | 呼瓦基有限责任公司 | 用于压裂液的支撑剂 |
CN106566524A (zh) * | 2016-11-03 | 2017-04-19 | 重庆长江造型材料(集团)股份有限公司 | 一种石英砂压裂支撑剂的制备工艺 |
CN108386179A (zh) * | 2018-03-13 | 2018-08-10 | 西南石油大学 | 一种砂岩储层水力压裂支撑剂参数的优化方法 |
CN109490155A (zh) * | 2017-09-13 | 2019-03-19 | 中国石油化工股份有限公司 | 压裂支撑剂粒径快速评价装置及应用方法 |
CN109751032A (zh) * | 2017-11-01 | 2019-05-14 | 中国石油化工股份有限公司 | 一种多粒径支撑剂混合压裂方法 |
CN109763806A (zh) * | 2017-11-09 | 2019-05-17 | 中国石油化工股份有限公司 | 一种深层页岩气多尺度支撑剂充填的体积压裂方法 |
CN109804039A (zh) * | 2016-09-30 | 2019-05-24 | 瓦克化学股份公司 | 用于压裂开采法的涂覆的支撑装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6789621B2 (en) * | 2000-08-03 | 2004-09-14 | Schlumberger Technology Corporation | Intelligent well system and method |
US7798224B2 (en) * | 2006-07-03 | 2010-09-21 | Schlumberger Technology Corporation | Rheology controlled heterogeneous particle placement in hydraulic fracturing |
US20080179057A1 (en) * | 2007-01-26 | 2008-07-31 | Bj Services Company | Well Treating Agents of Metallic Spheres and Methods of Using the Same |
US9909404B2 (en) * | 2008-10-08 | 2018-03-06 | The Lubrizol Corporation | Method to consolidate solid materials during subterranean treatment operations |
US9945220B2 (en) * | 2008-10-08 | 2018-04-17 | The Lubrizol Corporation | Methods and system for creating high conductivity fractures |
WO2012078917A2 (en) * | 2010-12-08 | 2012-06-14 | Joseph Buford Parse | Multiple component neutrally buoyant proppant |
US10253598B2 (en) * | 2015-05-07 | 2019-04-09 | Baker Hughes, A Ge Company, Llc | Diagnostic lateral wellbores and methods of use |
US20170247995A1 (en) * | 2015-05-07 | 2017-08-31 | Baker Hughes Incorporated | Evaluating far field fracture complexity and optimizing fracture design in multi-well pad development |
WO2018026294A1 (ru) * | 2016-08-01 | 2018-02-08 | Шлюмберже Канада Лимитед | Жидкость для обработки пласта |
CN106442253B (zh) * | 2016-09-05 | 2020-06-09 | 中国石油天然气股份有限公司 | 支撑剂嵌入造成人工裂缝壁面压实伤害的评价方法及装置 |
CN106483017B (zh) * | 2016-10-27 | 2019-11-29 | 中国海洋石油集团有限公司 | 钙质土颗粒破碎评价方法 |
CN109521185B (zh) * | 2018-12-29 | 2020-02-14 | 武汉大学 | 煤系岩石残余碎胀系数测量方法及系统 |
CN110057917A (zh) * | 2019-05-06 | 2019-07-26 | 中冶北方(大连)工程技术有限公司 | 一种基于超声波波速的充填体抗压强度预测方法 |
-
2019
- 2019-09-27 CN CN201910925235.4A patent/CN110501266B/zh active Active
-
2020
- 2020-02-28 US US16/805,662 patent/US10823646B1/en active Active
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101519961A (zh) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | 支撑剂嵌入深度的测量装置及测量方法 |
CN104080881A (zh) * | 2011-11-08 | 2014-10-01 | 索尔维特殊聚合物美国有限责任公司 | 支撑剂颗粒以及在地下应用中使用此类颗粒的方法 |
CN102606126A (zh) * | 2012-03-27 | 2012-07-25 | 东方宝麟科技发展(北京)有限公司 | 裂缝性储层非平面网络裂缝压裂控制方法 |
CN102749436A (zh) * | 2012-07-24 | 2012-10-24 | 东北石油大学 | 研究压裂液配制及岩体断裂分形特征测定装置 |
CN104769075A (zh) * | 2012-11-02 | 2015-07-08 | 瓦克化学股份公司 | 作为石油和天然气井支撑剂的硅树脂改性的酚醛树脂 |
CN106459742A (zh) * | 2014-04-23 | 2017-02-22 | 呼瓦基有限责任公司 | 用于压裂液的支撑剂 |
CN106255804A (zh) * | 2014-04-30 | 2016-12-21 | 优选技术有限责任公司 | 支撑剂混合物 |
CN204294863U (zh) * | 2014-12-18 | 2015-04-29 | 蒋斌 | 一种低密度的树脂覆膜砂 |
CN105134186A (zh) * | 2015-08-18 | 2015-12-09 | 中国地质大学(武汉) | 页岩气水力压裂物理模拟试验系统 |
CN105510165A (zh) * | 2015-12-04 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司 | 非连续铺砂裂缝缝内支撑剂砂团冲蚀评价装置及测试方法 |
CN109804039A (zh) * | 2016-09-30 | 2019-05-24 | 瓦克化学股份公司 | 用于压裂开采法的涂覆的支撑装置 |
CN106566524A (zh) * | 2016-11-03 | 2017-04-19 | 重庆长江造型材料(集团)股份有限公司 | 一种石英砂压裂支撑剂的制备工艺 |
CN109490155A (zh) * | 2017-09-13 | 2019-03-19 | 中国石油化工股份有限公司 | 压裂支撑剂粒径快速评价装置及应用方法 |
CN109751032A (zh) * | 2017-11-01 | 2019-05-14 | 中国石油化工股份有限公司 | 一种多粒径支撑剂混合压裂方法 |
CN109763806A (zh) * | 2017-11-09 | 2019-05-17 | 中国石油化工股份有限公司 | 一种深层页岩气多尺度支撑剂充填的体积压裂方法 |
CN108386179A (zh) * | 2018-03-13 | 2018-08-10 | 西南石油大学 | 一种砂岩储层水力压裂支撑剂参数的优化方法 |
Non-Patent Citations (3)
Title |
---|
Proppant Crushing Mechanisms Under Reservoir Conditions: Insights into Long-Term Integrity of Unconventional Energy Production;Bandara K M A S 等;《Natural Resources Research》;20190731;第28卷(第3期);第1139-1161页 * |
二次加砂压裂理论模型及应用;李勇明 等;《新疆石油地质》;20100228;第31卷(第2期);第190-193页 * |
循环荷载下支撑剂的变形及渗透特性试验研究;卢义玉 等;《岩土力学》;20170630(第S1期);第179-186页 * |
Also Published As
Publication number | Publication date |
---|---|
US10823646B1 (en) | 2020-11-03 |
CN110501266A (zh) | 2019-11-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110501266B (zh) | 一种评价支撑剂砂堆纵向变形的方法 | |
Liu et al. | An elastoplastic constitutive model for rockfills incorporating energy dissipation of nonlinear friction and particle breakage | |
Kleven et al. | Evaluation of excess foundry system sands for use as subbase material | |
CN107807520A (zh) | 一种确定粗粒料填筑指标与现场质量控制的方法 | |
Aboutalebi Esfahani et al. | Effects of aggregate gradation on resilient modulus and CBR in unbound granular materials | |
JP2007333707A (ja) | 土質材料の評価方法 | |
Nakao et al. | Direct shear testing of a marginal material using a large shear box | |
Kermani et al. | Experimental simulation and quantification of migration of subgrade soil into subbase under rigid pavement using model mobile load simulator | |
JP5290595B2 (ja) | 岩石の利用可否判定方法 | |
Zhang et al. | A fluid‐solid coupling method for the simulation of gas transport in porous coal and rock media | |
Dabiri et al. | Shear wave velocity-based liquefaction resistance of sand-silt mixtures: deterministic versus probabilistic approach | |
Jayawickrama et al. | Pullout resistance factors for steel MSE reinforcements embedded in Gravelly backfill | |
Chow | Permanent deformation behavior of unbound granular materials and rutting model development | |
Mousa et al. | Resilient modulus for unbound granular materials and subgrade soils in Egypt | |
Arasteh et al. | A new model for calculation of the plastic compression index and porosity and permeability of gob materials in longwall mining | |
Xia et al. | Study on the bearing capacity and engineering performance of aeolian sand | |
CN108760463B (zh) | 一种土的三轴压缩试验的模型试验方法 | |
Chow et al. | Aggregate base course material testing and rutting model development | |
CN109359410B (zh) | 支撑剂不完全充填裂缝残余缝宽评价方法及装置 | |
CN110057674B (zh) | 一种无机结合料稳定材料静态直接拉伸回弹模量测试方法 | |
Ouabdesselam et al. | An Investigation of the Effect of Cyclic Loading on Fracture Conductivity | |
Anyang et al. | Plate load test: Getting it right | |
Kotb | An investigation into present sand control testing practices for SAGD wells | |
Look | Compaction density of residual soils and weathered rock | |
Walsh et al. | Field implications of current compaction specification design practices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | 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 | ||
CB03 | Change of inventor or designer information |
Inventor after: Guo Jianchun Inventor after: Duan Youjing Inventor after: Liu Yuxuan Inventor after: Chen Chi Inventor after: Wen Dilin Inventor before: Guo Jianchun Inventor before: Duan Youjing Inventor before: Liu Yuxuan Inventor before: Wang Jiandong Inventor before: Chen Chi Inventor before: Wen Dilin |
|
CB03 | Change of inventor or designer information | ||
OL01 | Intention to license declared | ||
OL01 | Intention to license declared |