ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,526, issued on April 22, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Method and system for suspending a drill string and isolating a wellbore" was invented by Rae Younger (Aberdeenshire, Great Britain) and Richard Mark Pye (Aberdeenshire, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system including a plug with a first end connected to a lower drill string and a second end connected to an upper drill string. The plug further includes a sealing element configured to seal against a reservoir pressure that is downhole from the plug, and an anchoring element configured to releasably couple the plug to a wellbore ...