US Patent Issued to China University of Petroleum (East China) on Aug. 12 for "Strongly adsorbed hyper-branched filtrate reducer for water-based drilling fluid with resistance to 240deg C. and saturated salinity, preparation method therefor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,953, issued on Aug. 12, was assigned to China University of Petroleum (East China) (Qingdao, China).

"Strongly adsorbed hyper-branched filtrate reducer for water-based drilling fluid with resistance to 240deg C. and saturated salinity, preparation method therefor and use thereof" was invented by Jinsheng Sun (Qingdao, China), Jingping Liu (Qingdao, China), Kaihe Lv (Qingdao, China), Fengbao Liu (Qingdao, China), Meichun Li (Qingdao, China), Jiafeng Jin (Qingdao, China), Jintang Wang (Qingdao, China), Yuanwei Sun (Qingdao, China) and Taifeng Zhang (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to the tec...