US Patent Issued to CHINA UNIVERSITY OF PETROLEUM-BEIJING on April 7 for "Oil displacement method for an ultra-high water-cut reservoir" (Chinese Inventors)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,725, issued on April 7, was assigned to CHINA UNIVERSITY OF PETROLEUM-BEIJING (Beijing).

"Oil displacement method for an ultra-high water-cut reservoir" was invented by Kaoping Song (Beijing), Bingyu Ji (Beijing), Hongtao Fu (Beijing) and Zhaojie Song (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An oil displacement method for an ultra-high water-cut reservoir, including the following steps: injecting water into the reservoir to carry out a water flooding until water cut of the reservoir is greater than 90%; injecting a polymer solution and a supercritical carbon dioxide oil displacement agent, respectively; injecting water to carry out wa...