US Patent Issued to YAN'AN UNIVERSITY on July 29 for "Method and device for determining concentration of surfactant solution for oil displacement by imbibition" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,452, issued on July 29, was assigned to YAN'AN UNIVERSITY (Yan'an, China).

"Method and device for determining concentration of surfactant solution for oil displacement by imbibition" was invented by Feifei Huang (Shaanxi, China), Yandong Yang (Shaanxi, China), Shaofei Kang (Shaanxi, China), Chunsheng Pu (Shaanxi, China) and Hengli Wang (Shaanxi, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method and device for determining the surfactant concentration for oil displacement by imbibition. The method includes the following steps: providing a tank for holding the surfactant solution and a capillary tube; adding the surfactant solu...