Oil & Gas
| Fri 22 May 2026
Beijing, May 22 -- PetroChina has sought patent for Underground Steam Injection Device and Method. This invention was developed by Pang Ming, An Jiuquan, Wei Kai, Liu Yazhou, Zhao Shujie, Liu Peiheng, Du Xiaoxue, Li Yiyuan, Wang Wei, Liu Jin, Xiang Pengxin, Liang Yaowen, Ren Guoheng, Yang Zhongde, Bu Xiangfu and Zhai Shiwei.
Th..