ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,937, issued on May 6, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Self-setting plug" was invented by Ali Ssafwany (Safwa, Saudi Arabia), Ali S. Al-Mashhad (Al-Bustan, Saudi Arabia) and Rakan Al Yateem (Majidiyah, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plug for wellbore tubing includes: an internal portion; a first external portion which surrounds the internal portion; and a second external portion disposed axially adjacent to the first external portion, with respect to a central longitudinal axis of the plug. The second external portion expands to: engage an interior surface of the wellbore tubing in re...