Issued Patents 2022
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11346200 | Method and system for guaranteeing safety of offshore oil well control equipment | Yonghong Liu, Chao Yang, Xiangdi Kong, Yi Zhao, Hongqi Xu +9 more | 2022-05-31 |
| 11293231 | Multi-path combined high-low voltage plasma drilling method, drill bit for drilling and drill bit apparatus for drilling | Yonghong Liu, Qiang Sun, Qingyun Li, Renjie Ji, Xiaopeng Li +5 more | 2022-04-05 |
| 11268326 | Multi-path combined high-low voltage plasma drilling power source and drillling system | Yonghong Liu, Qiang Sun, Qingyun Li, Renjie Ji, Xiaopeng Li +5 more | 2022-03-08 |
| 11243509 | Method for assessing safety integrity level of offshore oil well control equipment | Yonghong Liu, Wenchao Li, Xiangdi Kong, Xiaoyan Shao, Hongqi Xu +9 more | 2022-02-08 |