ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,982, issued on Sept. 15, was assigned to SOUTHWEST PETROLEUM UNIVERSITY (Chengdu, China).

"Methods and systems for determining well shut-in pressures of oil and gas well drilling" was invented by Jie Zhang (Chengdu, China), Rongxin Li (Chengdu, China), Cuinan Li (Chengdu, China), Ping Pang (Chengdu, China), Yu Qing (Chengdu, China), Liuyang Wang (Chengdu, China) and Runze Li (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for determining a well shut-in pressure of oil and gas well drilling are provided. The method comprises: obtaining, by a first processor, a basic parameter of a target oil and gas well, the basic...