Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11828733 | Device for testing strength and sealing performance of cement sheath after perforation and using method thereof | Zhongling Xiao, Zhi Zhang, Jian Dong Ding, Jiawei Wang, Taihe Shi | 2023-11-28 |
| 11733121 | Sealing integrity evaluation device for high-temperature and high- pressure casing-cement ring-formation and method thereof | Zhi Zhang, Huali Zhang, Yufei Li, You Wu, Lin Zhang +4 more | 2023-08-22 |
| 11583822 | Intermediate gas concentration-regulating piston pressure device for high-temperature autoclave and gas distribution method | Zhi Zhang, Jinming Liu, Huali Zhang, Yufei Li, Jiawei Wang +6 more | 2023-02-21 |