Chemicals
| Wed 22 Apr 2026
Beijing, April 22 -- CNOOC Energy Technology & Services has submitted a patent application for Plugging Agent Suitable for Fractured Formation and Preparation Method Thereof. This invention was developed by Jing Qian, Geng Xueli, Wang Tao, Jia Jia, Feng Xuesong, Zheng Xiaobin, Ye Xufeng, Guo Dong, Su Zhijun, Sun Lei, Li Honglei,..