Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11873225 | Modified montmorillonite self-repairing agent and preparation method and use thereof | Liwei Zhang, Yan Wang, Manguang Gan, Xiaochun Li | 2024-01-16 |
| 11345844 | Oil well cement slurry high-temperature suspension stabilizer prepared from oil-based shale drilling cuttings | Xiaowei Cheng, Gaoyin Zhang, Shunxiang Luo, Zuwei Chen, Sheng-Po Huang +5 more | 2022-05-31 |
| 10975284 | Well cementation working solution prepared from red mud, slag and waste drilling fluids | Xiaowei Cheng, Dan Long, Kaiqiang Liu, Gaoyin Zhang, Dan Qin +8 more | 2021-04-13 |
| 10876945 | Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load | Xiaowei Cheng, Dan Qin, Kaiqiang Liu, Gaoyin Zhang, Xianshu Gao +7 more | 2020-12-29 |