Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10408014 | Well killing method and device for a fractured formation without safety pressure window by five-step bullheading | Xueqing Teng, Yaoming Zhang, Zhiyuan Wang, Hongtao Liu, Jianbo Zhang +1 more | 2019-09-10 |
| 10337267 | Control method and control device for drilling operations | Zhiyuan Wang, Shaowei Pan, Jianbo Zhang, Jing Yu | 2019-07-02 |
| 10267129 | Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof | Ye Chen, Zhiyuan Wang, Litao Chen, Yonghai Gao, Jiafang Xu +1 more | 2019-04-23 |