Issued Patents 2017
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631444 | Kick information identification apparatus and method assisted for wellbore pressure control during horizontal drilling | Xiaohui Sun, Zhiyuan Wang, Jianliang Zhou | 2017-04-25 |
| 9631454 | Wellbore pressure control system and method for offshore well cementation stages | Xuerui Wang, Yingwen Ma, Yonghai Gao | 2017-04-25 |
| 9631450 | Surface layer conductor running tool for deep-water well drilling | Ning Zhang, Hao Li, Yonghai Gao, Guomin Yan, Mingzhao Huang +1 more | 2017-04-25 |
| 9624420 | Foam stabilizer composition, foamed cement slurry and additive composition thereof | Chengwen Wang, Ruihe Wang, Weidong Zhou | 2017-04-18 |
| 9612187 | Experimental apparatus for studying gas invasion and migration mechanism in oil and gas wellbores | Yanli Guo, Hao Li, Linsong Song | 2017-04-04 |
| 9605499 | Subsea wellhead pressure indicating and automatic adjusting device for deep-water dual-gradient drilling | Zhennan Zhang, Zhiyuan Wang, Ning Wang, Xuerui Wang, Guomin Yan +1 more | 2017-03-28 |
| 9598936 | Apparatus and method for monitoring hydrate decomposition area under different drilling and production processes | Yonghai Gao, Ye Chen, Wenchao Sun, Hao Li | 2017-03-21 |
| 9594038 | Device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities | Jintang Wang, Yun Liu, Zhiyuan Wang, Hao Li, Jianbo Zhang | 2017-03-14 |