Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12196725 | Evaluation apparatus for seal integrity of wellbores in full life cycle and evaluation methods thereof | Zhi Zhang, Zhongling Xiao, Huabo Yang, Jian Ren, Taihe Shi | 2025-01-14 |
| 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 |
| 11378501 | Rotary fatigue tester with complex loads | Zhi Zhang, Yuanjin Zhao, Nan Cai, Xiankang Zhong, Pengfei Sang +3 more | 2022-07-05 |