US Patent Issued to SCHLUMBERGER TECHNOLOGY on March 3 for "Rotating check valve for improved downhole operations" (Norwegian, American Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,812, issued on March 3, was assigned to SCHLUMBERGER TECHNOLOGY Corp. (Sugar Land, Texas).

"Rotating check valve for improved downhole operations" was invented by Are Funderud (Vanvikan, Norway), Idalia Ovalle Stevenson (Sugar Land, Texas), Rishi Mishra (Rosenberg, Texas) and Dan Tabalan (Sugar Land, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A milling bit is disclosed for debris collection within a wellbore. A check valve can be part of a debris removal tool that includes a motor, a pump, a gearbox, a bailer, the milling bit, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On i...