Issued Patents 2017
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834717 | Drilling fluid additive composition and pseudo oil-based drilling fluid suitable for horizontal shale gas wells | Guancheng Jiang, Xianmin Zhang, Yinbo He, Deli Gao, Xianzhu Wu +9 more | 2017-12-05 |
| 9790415 | Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells | Guancheng Jiang, Yinbo He, Qingying Ge, Lili Yang, Fan Liu +7 more | 2017-10-17 |
| 9790417 | High-density water-based drilling fluid suitable for horizontal shale gas wells | Guancheng Jiang, Yinbo He, Fan Liu, Lili Yang, Xianmin Zhang +10 more | 2017-10-17 |
| 9783725 | Drilling fluid additive composition and water-based drilling fluid suitable for horizontal shale gas wells | Guancheng Jiang, Yinbo He, Deli Gao, Xianmin Zhang, Xianzhu Wu +6 more | 2017-10-10 |
| 9783726 | Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells | Guancheng Jiang, Yinbo He, Deli Gao, Xianmin Zhang, Xianzhu Wu +6 more | 2017-10-10 |
| 9638031 | Method of controlling well bore pressure based on model prediction control theory and systems theory | Zhilin LI, Bin Dong, Liexiang Han, Runde Xiao, Bo Yang +5 more | 2017-05-02 |