ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,111, issued on July 1, was assigned to SCHLUMBERGER TECHNOLOGY Corp..
"Rotating check valve for improved downhole operations" was invented by Rishi Mishra (Sugar Land, Texas) and Dan Tabalan (Sugar Land, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotating check valve is disclosed for improved debris collection within a wellbore. The check valve can be part of a debris removal tool that includes a motor, pump, gearbox, bailer, milling bit, the check valve, rotational shafts. On its uphole end, the check valve can be coupled with the bailer such that the check valve can rotate relative to the bailer. Also on the uphole end, the check valve ...