ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,202, issued on Feb. 10, was assigned to The WellBoss Co. Inc. (Calgary, Canada).
"Systems and methods for multistage fracturing" was invented by Chad Michael Erick Gibson (The Woodlands, Texas), Derek Slater Payne (Katy, Texas), Clay Edward Chambers (Richmond, Texas) and Martin Paul Coronado (Fulshear, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A plugging device for multistage fracturing wherein a stopper assembly is installed in the plugging device in manner that allows pressure integrity from above the plugging device, and the stopper assembly is further configured to allow a bore of the plugging device to open with an at least minimal p...