Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10408014 | Well killing method and device for a fractured formation without safety pressure window by five-step bullheading | Baojiang Sun, Yaoming Zhang, Zhiyuan Wang, Hongtao Liu, Jianbo Zhang +1 more | 2019-09-10 |
| 9746403 | Method of testing a polycrystalline diamond compact cutter | Liang Zhao, Xiaomin Cheng | 2017-08-29 |