CN102329600B - 一种油井纳米颗粒封窜堵水剂 - Google Patents
一种油井纳米颗粒封窜堵水剂 Download PDFInfo
- Publication number
- CN102329600B CN102329600B CN201110310707.9A CN201110310707A CN102329600B CN 102329600 B CN102329600 B CN 102329600B CN 201110310707 A CN201110310707 A CN 201110310707A CN 102329600 B CN102329600 B CN 102329600B
- Authority
- CN
- China
- Prior art keywords
- gram
- oxide
- water shutoff
- shutoff agent
- plugging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003129 oil well Substances 0.000 title claims abstract description 25
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 17
- 230000005465 channeling Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 33
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000292 calcium oxide Substances 0.000 claims abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 11
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 7
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000013505 freshwater Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000007859 condensation product Substances 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 10
- 238000009775 high-speed stirring Methods 0.000 claims description 8
- 229960004418 trolamine Drugs 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 4
- 239000010779 crude oil Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000440 bentonite Substances 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 208000013201 Stress fracture Diseases 0.000 description 6
- 230000035699 permeability Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 239000007771 core particle Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Abstract
本发明涉及一种用于封堵微裂缝及低渗地层的油井纳米颗粒封窜堵水剂。它可克服封堵微裂缝及低渗地层出水的油井水泥封堵半径小，有机类强度低、封堵有效期短的缺陷，其技术方案是：制备该堵水剂所用原料的各组分及含量为，质量单位为克：氧化钙23-25；氧化硅18-21；氧化铝7-8.5；氧化铁4-5.4；三乙醇胺0.15-0.18；KCL0.06-0.08；Na2SiO30.04-0.05；膨润土0.42-0.5；丙酮和甲醛缩聚物0.1-0.12；铁铬木质素磺酸盐0.1-0.15；淡水39.02-47.13。本发明堵水剂在井下温度和压力条件下，通过有机和无机组分的协调效应和化学反应，能在封堵层位形成抗压强度高、韧性好、微膨胀和有效期长的固化体，能严实封堵各种类型的地层，用于油井原油开发。
Description
技术领域
本发明涉及一种用于封堵微裂缝及低渗地层的油井纳米颗粒封窜堵水剂，特别适合于管外窜、套管变形及损坏、层间窜等情况下微裂缝的封堵。
背景技术
随着油井原油开发的逐步深入，油田进入高含水开发期，油井存在不同类型的水窜、水害。特别的是对于低渗地层的油井管外窜、套管变形及损坏、层间窜、难卡封已射开高含水井的封堵，最常用的方法是向采油井或注水井特定层段挤注高强度堵水剂进行永久性封堵或重新射孔，来稳油控水，提高采收率。目前采用的油井堵水剂主要有油井水泥类堵水剂和有机类堵水剂。但是由于油井水泥的颗粒大不能够进入微缝通道，且封堵半径小，成功率只有30%左右；采用有机类堵水剂封堵，由于受其自身性质的影响往往耐久性低、强度低、老化现象严重、成本高，使用受到限制。
发明内容
本发明的目的是：为了克服封堵微裂缝及低渗地层出水的油井水泥封堵半径小，有机类强度低、封堵有效期短的缺陷，特提供一种油井纳米颗粒封窜堵水剂。
为了达到上述目的，本发明采用以下技术方案：一种油井纳米颗粒封窜堵水剂，其特征是制备该堵水剂所用原料的各组分及其含量如下，其质量单位为克或千克：氧化钙23-25；氧化硅18-21；氧化铝7-8.5；氧化铁4-5.4；三乙醇胺0.15-0.18；KCL 0.06-0.08；Na2SiO3 0.04-0.05；膨润土0.42-0.5；丙酮和甲醛缩聚物0.1-0.12；铁铬木质素磺酸盐0.1-0.15；淡水39.02-47.13。
本发明油井纳米颗粒封窜堵水剂的制备方法是：
先采用德国Restsch公司出产的行星式球磨仪PM400分别将氧化钙，氧化硅，氧化铝，氧化铁， Na2SiO3，膨润土，丙酮和甲醛缩聚物进行研磨，使其颗粒粒径达到1-100nm;再将三乙醇胺0.15-0.18克，KCL 0.06-0.08克，铁铬木质素磺酸盐0.1-0.15克，倒入盛有39.02-47.13克淡水的高速搅拌杯中充分溶解，再加入研磨后的氧化钙23-25克，氧化硅18-21克，氧化铝7-8.5克，氧化铁4-5.4克，Na2SiO3 0.04-0.05克，膨润土0.42-0.5克，丙酮和甲醛缩聚物0.1-0.12克，在高速搅拌杯中以8000-10000转/分钟的速度搅拌3分钟，即得到用于封堵微裂缝及低渗地层的油井纳米颗粒封窜堵水剂。
本发明提供的封堵微裂缝及低渗地层的油井纳米颗粒封窜堵水剂与现有技术相比具有以下有益效果：（1）该堵水剂能够在微裂缝、小孔道快速形成网架结构，有效地滞留在封堵层内；（2）该堵水剂在井下温度和压力的养护条件下，通过有机和无机组分的协同效应和化学反应，能够在封堵层位形成抗压强度高、韧性好、微膨胀和有效期长的固化体；（3）配制的堵浆流动性和稳定性好，挤注压力低，固化时间易于调整；（4）该堵水剂的封堵半径大，封堵有效期长，封堵强度高，能够严实的封堵各种类型的水层，用于油井原油开发。
具体实施方式
下面结合具体实例对本发明作进一步的说明。
实施例1：采用纳米粒度仪对本发明溶液进行了粒度测定
表1油井纳米颗粒封窜堵水剂的粒径特征
实施例2：首先采用德国Restsch公司出产的行星式球磨仪PM400分别对氧化钙，氧化硅，氧化铝，氧化铁， Na2SiO3，膨润土，丙酮和甲醛缩聚物进行研磨，使其颗粒粒径达到纳米1-100nm。再将三乙醇胺0.15克，KCL 0.06克，铁铬木质素磺酸盐0.1克，倒入盛有39.02克淡水的高速搅拌杯中充分溶解，再加入研磨后的氧化钙23克，氧化硅18克，氧化铝7克，氧化铁4克，Na2SiO3 0.04克，膨润土0.42克，丙酮和甲醛缩聚物0.1克，在高速搅拌杯以10000转/分钟搅拌3分钟，将搅拌后的堵剂倒入特制的测压模具制成测压模块，在50℃下分别水浴3天、7天、28天，用抗压、抗折强度仪测定各模块强度
表2 油井纳米颗粒封窜堵水剂抗折抗压强度
实施例3：首先采用德国Restsch公司出产的行星式球磨仪PM400分别对氧化钙，氧化硅，氧化铝，氧化铁， Na2SiO3，膨润土，丙酮和甲醛缩聚物进行研磨，使其颗粒达到1-100nm。再将三乙醇胺0.18克，KCL 0.08克，铁铬木质素磺酸盐0.15克，倒入盛有47.13克淡水的高速搅拌杯中充分溶解，再加入研磨后的氧化钙25克，氧化硅21克，氧化铝8.5克，氧化铁5.4克，Na2SiO3 0.05克，膨润土0.5克，丙酮和甲醛缩聚物0.12克，在高速搅拌杯以10000转/分钟搅拌3分钟，将搅拌好的试验浆体，与浸泡过的岩心颗粒混合均匀后倒入钢筒中（由于岩心-钢筒界面粘接差，预先将堵剂与岩心颗粒混合），钢筒下端垫一层10目筛网（模拟大漏失），开平流泵，模拟现场挤堵工况，驱替清水20ml（1PV），出口端有清澈滤液流出，取出钢筒密封后放入水浴锅中养护48-72h，温度为50℃。再置于ZLX评价仪的岩心夹持器内，加环压3MPa，开平流泵，随时保持环压大于平流泵的压力3MPa，直到岩心夹持器下端滴出第一滴水时所施加的水压，定义为封堵强度
表3封堵强度试验结果
| 样品 | 驱替压力（MPa） | 滤液量(ml) | 封堵强度（MPa） | 抗冲击力（MPa） |
| 油井纳米颗粒封窜堵水剂 | 1.0 | 10.5 | 32 | 23 |
由表1可以看出油井纳米颗粒封窜堵水剂已经达到了纳米剂。由表2、3可以看出油井纳米颗粒封窜堵水剂在50℃下具有很高的抗压强度、及封堵强度。
Claims (1)
1.一种油井纳米颗粒封窜堵水剂，其特征是：制备该堵水剂所用原料的各组分及其含量如下，其质量单位为克：氧化钙23-25；氧化硅18-21；氧化铝7-8.5；氧化铁4-5.4；三乙醇胺0.15-0.18；KCL 0.06-0.08；Na2SiO3 0.04-0.05；膨润土0.42-0.5；丙酮和甲醛缩聚物0.1-0.12；铁铬木质素磺酸盐0.1-0.15；淡水39.02-47.13；该堵水剂的制备方法，先采用球磨仪分别将氧化钙，氧化硅，氧化铝，氧化铁，Na2SiO3，膨润土，丙酮和甲醛缩聚物进行研磨，使其颗粒粒径达到1-100nm;再将三乙醇胺0.15-0.18克，KCL 0.06-0.08克，铁铬木质素磺酸盐0.1-0.15克，倒入盛有39.02-47.13克淡水的高速搅拌杯中充分溶解，再加入研磨后的氧化钙23-25克，氧化硅18-21克，氧化铝7-8.5克，氧化铁4-5.4克，Na2SiO3 0.04-0.05克，膨润土0.42-0.5克，丙酮和甲醛缩聚物0.1-0.12克，在高速搅拌杯中以8000-10000转/分钟的速度搅拌3分钟，制得本油井纳米颗粒封窜堵水剂。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310707.9A CN102329600B (zh) | 2011-10-14 | 2011-10-14 | 一种油井纳米颗粒封窜堵水剂 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310707.9A CN102329600B (zh) | 2011-10-14 | 2011-10-14 | 一种油井纳米颗粒封窜堵水剂 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102329600A CN102329600A (zh) | 2012-01-25 |
| CN102329600B true CN102329600B (zh) | 2013-04-10 |
Family
ID=45481571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110310707.9A Withdrawn - After Issue CN102329600B (zh) | 2011-10-14 | 2011-10-14 | 一种油井纳米颗粒封窜堵水剂 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102329600B (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690639B (zh) * | 2012-06-15 | 2013-11-27 | 中国石油化工股份有限公司 | 一种管外封窜剂 |
| CN104099071A (zh) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | 一种水平井固井膨胀水泥浆及其制备方法 |
| CA2941888C (en) * | 2014-03-27 | 2022-05-03 | The Regents Of The University Of California | Methods for detection, marking and sealing leaks in pipes or ducts |
| CN104212422B (zh) * | 2014-08-08 | 2017-02-08 | 左青山 | 一种稠油低成本改性粘土类堵水剂及使用方法 |
| CN105647494A (zh) * | 2014-09-18 | 2016-06-08 | 新疆格瑞迪斯石油技术股份有限公司 | 随钻防漏堵漏剂及其制备工艺 |
| BR102015004125B1 (pt) | 2015-02-26 | 2020-12-15 | Petróleo Brasileiro S.A. - Petrobras | processo para produção de nanopartículas |
| CN106967403A (zh) * | 2017-04-24 | 2017-07-21 | 东北石油大学 | 一种油田储层大孔道或特高渗透条带封堵剂及其制备方法 |
| CN110437811B (zh) * | 2019-07-29 | 2021-11-19 | 中国石油天然气集团有限公司 | 一种适用于厄瓜多尔雨林的低伤害水基钻井液及制备方法 |
| CN111423860B (zh) * | 2020-05-21 | 2020-12-18 | 北京宝丰春石油技术有限公司 | 一种高强度纳米封堵剂 |
| CN113337258B (zh) * | 2021-06-25 | 2022-09-23 | 中曼石油天然气集团股份有限公司 | 一种油基钻井液用纳米封堵剂及其制备方法以及油基钻井液 |
| CN114806230A (zh) * | 2022-02-25 | 2022-07-29 | 徐州吉安矿业科技有限公司 | 一种增韧型喷涂堵漏风密闭材料及其施工工艺 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209646B1 (en) * | 1999-04-21 | 2001-04-03 | Halliburton Energy Services, Inc. | Controlling the release of chemical additives in well treating fluids |
| CN101795777A (zh) * | 2007-06-29 | 2010-08-04 | 佐治亚-太平洋化工品有限公司 | 胺醛树脂以及它们在分离过程中的用途 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6616753B2 (en) * | 2001-12-11 | 2003-09-09 | Halliburton Energy Services, Inc. | Methods and compositions for sealing subterranean zones |
-
2011
- 2011-10-14 CN CN201110310707.9A patent/CN102329600B/zh not_active Withdrawn - After Issue
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209646B1 (en) * | 1999-04-21 | 2001-04-03 | Halliburton Energy Services, Inc. | Controlling the release of chemical additives in well treating fluids |
| CN101795777A (zh) * | 2007-06-29 | 2010-08-04 | 佐治亚-太平洋化工品有限公司 | 胺醛树脂以及它们在分离过程中的用途 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102329600A (zh) | 2012-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102329600B (zh) | 一种油井纳米颗粒封窜堵水剂 | |
| CN101613595B (zh) | 微泡沫钻井液 | |
| CN103321606B (zh) | 一种低渗裂缝性油藏油井堵水屏蔽方法 | |
| CN109705827A (zh) | 石油钻井用堵漏承压剂及其制备方法 | |
| CN102181274B (zh) | 触变性化学封窜剂 | |
| CN102061151A (zh) | 一种石油钻井用堵漏承压剂及其制备方法和应用 | |
| CN101158280A (zh) | 油井高含水层堵压方法 | |
| CN108531153B (zh) | 一种耐高温石油树脂分散体堵剂及其制备方法与应用 | |
| CN103160271A (zh) | 一种块状防砂支撑剂的制备方法 | |
| CN102191025A (zh) | 一种广谱可变形随钻防漏堵漏剂 | |
| Fu et al. | Study on a new water-inhibiting and oil-increasing proppant for bottom-water-drive reservoirs | |
| CN104987856B (zh) | 海洋钻井液用承压堵漏剂及其应用方法 | |
| CN108625836B (zh) | 一种低渗透底水油藏高含水油井控水增产方法 | |
| CN102851013A (zh) | 钻井复合超强凝胶堵漏剂 | |
| CN101089114A (zh) | 含盐隔离液体系及制备方法 | |
| CN104877655A (zh) | 溶解岩石建造纳米孔缝的清洁溶解压裂液CFs配制方法 | |
| CN113637464B (zh) | 一种防塌钻井液及其制备方法和应用 | |
| CN106336860A (zh) | 一种抗高温耐腐蚀油井水泥材料、制备方法及应用 | |
| CN101144009B (zh) | 一种生物改性硅酸盐钻井液体系 | |
| CN102865061B (zh) | 支撑剂的蜂窝式铺置方法及应用 | |
| CN105018053A (zh) | 一种可循环微泡钻井液及其制备方法 | |
| CN101440274B (zh) | 一种钻井液的制备方法 | |
| CN106010495A (zh) | 一种注水井用降压增注剂及其制备方法 | |
| CN104121000A (zh) | 一种低渗裂缝性油藏套管完井水平井堵水方法 | |
| CN105062457B (zh) | 一种防煤粉低伤害压裂液及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WHEEL STAND GRAND PETROLEUM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SOUTHWEST PETROLEUM UNIVERSITY Effective date: 20140228 |
|
| CB03 | Change of inventor or designer information |
Inventor after: He Zhigang Inventor before: Bai Yang Inventor before: Tan Xiaohua Inventor before: Liu Jianyi Inventor before: Zhang Guangdong Inventor before: Wang Pingquan Inventor before: Hu Yaqin Inventor before: Li Li |
|
| CB03 | Change of inventor or designer information | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: BAI YANG TAN XIAOHUA LIU JIANYI ZHANG GUANGDONG WANG PINGQUAN HU YAQIN LI LI TO: HE ZHIGANG Free format text: CORRECT: ADDRESS; FROM: 610500 CHENGDU, SICHUAN PROVINCE TO: 841600 BAYINGOLIN MONGOL AUTONOMOUS PREFECTURE, XINJIANG UYGUR AUTONOMOUS REGION |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140228 Address after: 841600 the Xinjiang Uygur Autonomous Region Bayinguoleng Mongolia Autonomous Prefecture Luntai Industrial Park Administrative Committee Office Building Patentee after: Luntai Greatest Oil Technology Co., Ltd. Address before: 610500 Xindu No. 8, Xindu District, Sichuan, Chengdu Patentee before: Southwest Petroleum University |
|
| TR01 | Transfer of patent right | ||
| C56 | Change in the name or address of the patentee |
Owner name: XINJIANG GRAND PETROLEUM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WHEEL STAND GRAND PETROLEUM TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 841000, the Xinjiang Uygur Autonomous Region Bazhou Korla economic and Technological Development Zone Development Avenue incubator center building, room 402 Patentee after: XINJIANG GRAND OILFIELD TECHNOLOGY CO., LTD. Address before: 841600 the Xinjiang Uygur Autonomous Region Bayinguoleng Mongolia Autonomous Prefecture Luntai Industrial Park Administrative Committee Office Building Patentee before: Luntai Greatest Oil Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20220415 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20220415 |