US Patent Issued to CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY on Nov. 25 for "Device and method for rapidly regulating downhole pressure after kick in deepwater shallow open-circuit drilling" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,371, issued on Nov. 25, was assigned to CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) (Qingdao, China) and BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY (Beijing).

"Device and method for rapidly regulating downhole pressure after kick in deepwater shallow open-circuit drilling" was invented by Jianbo Zhang (Qingdao, China), Yang Yang (Qingdao, China), Hui Liu (Beijing), Xiaoao Liu (Beijing), Jintang Wang (Qingdao, China), Bo Zhang (Beijing), Zhiyuan Wang (Qingdao, China), Xiaohui Sun (Qingdao, China), Jie Zhong (Qingdao, China), Bangtang Yin (Qingdao, China), Xuerui Wang (Qingdao, China) and Baojiang Sun (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademar...