Oil & Gas
| Tue 26 May 2026
Beijing, May 26 -- PetroChina has applied Chinese patent for Descaling Device for Inner Wall of Underground Oil Pipe. Gao Xiandong, Hao Yingping, Zhao Ning, Ma Bo, Zhao Zhipeng, Chen Dezhen, Ma Jing, An Zhelei, Niu Qingyuan, Chen Peng, Zheng Guodong, Yuan Yaru, Ma Yu, Zong Zeyu and Feng Liyong developed it.
The patent applicati..