ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,730, issued on June 16, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Methods for in-depth fluid diversion and stage by stage fluid diversion systems" was invented by Dongqing Cao (Beijing), Xuan Zhang (Beijing), Tianping Huang (Beijing), Mohammed Badri AlOtaibi (Dhahran, Saudi Arabia), Lyla Maskeen (Dhahran, Saudi Arabia) and Ziyad Kaidar (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for in-depth fluid diversion includes a first step and one or more second steps. The first step includes simultaneously introducing a preformed particle gel (PPG) material and one or more shrinking agents to a first po...