ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,376, issued on March 24, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Debris shield for ball valve actuation" was invented by Brian Walther (Rosharon, Texas) and Bo Chen (Rosharon, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An isolation valve system includes a well string having an isolation valve including a rotatable ball for rotation about a fixed axis. The isolation valve has an extension mandrel and a connecting mandrel disposed above the rotatable ball. The isolation valve has a debris sleeve designed to push debris inward and upward in the extension mandrel accumulated above the rotatable ball when the ball i...