ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,956, issued on March 18, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"System and methods for a quick release collar in cementing casing strings" was invented by Dautmammet Rejepov (Abqaiq, Saudi Arabia) and Syed Muhammad Ali (Abqaiq, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes a first tubular string within a wellbore and a collar coupled to a top of the first tubular string. The collar may include a body extending from a first end to a second end. The body includes an internal ring extending radially inward from an inner surface of the body. The internal ring includes at least two holes exten...