Fishing
| Wed 15 Apr 2026
Beijing, April 16 -- Bazhou Dapu Petroleum Tech Service Co Ltd has submitted a patent application for Double-insurance Fishing Method for Logging Instrument. This invention was developed by Liu Yong, Wu Zhiqiang, Meng Weida, Chang Baoping, Shen Zhengyun, Li Chenxuan, Liu Yuqi, Li Yongxiang, Liu Shichao, Zhang Yu, Liu Lingling, X..