US Patent Issued to Shengli Oilfield Shengji Petroleum Equipment on July 29 for "Automatic small repair operation system for oil field" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,953, issued on July 29, was assigned to Shengli Oilfield Shengji Petroleum Equipment Co. Ltd. (Dongying, China).

"Automatic small repair operation system for oil field" was invented by Xiqing Zhang (Shandong, China), Duanguang Zhang (Shandong, China), Junfang Shen (Shandong, China), Qiuling Wang (Shandong, China), Hailong Lv (Shandong, China), Jiaojiao Zhang (Shandong, China), Xiaonan Zhang (Shandong, China), Yanli Jia (Shandong, China) and Wenping Han (Shandong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an automatic minor repair operation system for an oil field, a pipe column conveying and discharging dev...