Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9902890 | Drilling fluid additive composition suitable for coal-bed gas wells, and water-based drilling fluid and use thereof | Yinbo He, Chong Liu, Qingying Ge, Lili Yang, Yong Wang +7 more | 2018-02-27 |
| 9890318 | Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging | Chong Liu, Yinbo He, Qingying Ge, Lili Yang, Yong Wang +10 more | 2018-02-13 |
| 9834717 | Drilling fluid additive composition and pseudo oil-based drilling fluid suitable for horizontal shale gas wells | Xianmin Zhang, Yinbo He, Deli Gao, Xianzhu Wu, Lili Yang +9 more | 2017-12-05 |
| 9790415 | Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells | Yinbo He, Qingying Ge, Lili Yang, Fan Liu, Yuxiu An +7 more | 2017-10-17 |
| 9790417 | High-density water-based drilling fluid suitable for horizontal shale gas wells | Yinbo He, Fan Liu, Lili Yang, Xianmin Zhang, Deli Gao +10 more | 2017-10-17 |
| 9783725 | Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wells | Yinbo He, Deli Gao, Xianmin Zhang, Xianzhu Wu, Lili Yang +6 more | 2017-10-10 |
| 9783726 | Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells | Yinbo He, Deli Gao, Xianmin Zhang, Xianzhu Wu, Lili Yang +6 more | 2017-10-10 |
| 9745501 | Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof | Shuanglei Peng, Yinbo He, Zhengqiang Deng, Lili Yang, Fan Liu +8 more | 2017-08-29 |
| 9528042 | Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid | Zhengqiang Deng, Yinbo He, Xianbin Huang, Fan Liu, Yang Xuan +8 more | 2016-12-27 |
| 9528041 | Bionic drilling fluid and preparation method thereof | Yang Xuan, Xianmin Zhang, Xianzhu Wu, Wei Ouyang | 2016-12-27 |
| 9481822 | Drilling fluid additive composition and high temperature resistant clay-free whole-oil-based drilling fluid | Zhengqiang Deng, Yinbo He, Xianbin Huang, Fan Liu, Shuanglei Peng +1 more | 2016-11-01 |
| 9410067 | Biomimetic polymer for stabilizing wellbore and method for preparation of the same and drilling fluid | Yang Xuan, Xianzhu Wu, Junbin Chen, Wei Ouyang, Taotao Luo | 2016-08-09 |
| 9410068 | Method for preparation of biomimetic polymer for stabilizing wellbore and drilling fluid | Yang Xuan, Xianzhu Wu, Junbin Chen, Wei Ouyang, Taotao Luo | 2016-08-09 |
| 9410071 | Oil-based viscosifier of drilling fluid and the preparation method thereof | Xianbin Huang, Guangchang Ma, Xi Wang, Kun Zhang, Wei-Lin WAN | 2016-08-09 |
| 9399692 | Amphiphilic reservoir protecting agent and preparation method thereof and drilling fluid | Yang Xuan, Xi Wang, Ranran Song, Xianzhu Wu, Junbin Chen +3 more | 2016-07-26 |
| 9365762 | Copolymer of dimer acid-organic amine and shear strength improving agent of water in oil emulsion drilling fluid and drilling fluid | Yinbo He, Xianbin Huang, Zhengqiang Deng | 2016-06-14 |
| 9353305 | Reservoir protecting agent composition, drilling fluid for middle permeability reservoirs and use thereof | Yang Xuan, Xi Wang, Yuxiu An | 2016-05-31 |
| 9296936 | Preparation method of a wettability reversal agent | Yang Xuan, Xi Wang, Shuo Zhang, Yuxiu An, Jinsheng Sun | 2016-03-29 |
| 9279076 | Reservoir protecting agent composition and broad-spectrum drilling liquid and use thereof | Yang Xuan, Xi Wang, Shuo Zhang, Yuxiu An, Jinsheng Sun | 2016-03-08 |
| 9267068 | Protecting agent composition for high/ultra-high permeability reservoirs and drilling fluid and use thereof | Yang Xuan, Xi Wang, Shuo Zhang, Yuxiu An, Jinsheng Sun | 2016-02-23 |