Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11313192 | Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof | Xianwen Li, Qiaorong Han, Yanming Zhang, Xu Ma, Zhanguo Ma +25 more | 2022-04-26 |