US Patent Issued to PRUITT TOOL & SUPPLY on July 1 for "Method and system for maintaining constant back pressure during managed pressure drilling" (Arkansas Inventor)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,108, issued on July 1, was assigned to PRUITT TOOL & SUPPLY Co. (Fort Smith, Ark.).

"Method and system for maintaining constant back pressure during managed pressure drilling" was invented by Martyn Parker (Fort Smith, Ark.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This system maintains bottom hole pressure and constant well bore pressure profile for a period of time in event of loss of power to rig pumps, rig pump failure or other loss of pressure to the primary flowline. The back pressure system diverts mud into the primary flowline to maintain pressure. The system provides time to get the diesel powered cement unit on line to maintain pressur...