ALEXANDRIA, Va., July 16 -- United States Patent no. 12,361,190, issued on July 15, was assigned to Southwest Petroleum University (Chengdu, China).

"Three-dimensional characterization method of hydrocarbon secondary migration channel" was invented by Xiaoming Zhao (Chengdu, China), Yan Zhen (Chengdu, China), Wenjing Ran (Chengdu, China), Jiawang Ge (Chengdu, China), Li Liu (Chengdu, China) and Kun Qi (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A three-dimensional characterization method of a hydrocarbon secondary migration channel includes: step 1, collecting lithofacies seismic inversion data of a research area, and constructing a three-dimensional geological model including mudstone and...