ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,890, issued on June 23, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Rotating control device with variable pressure compensation" was invented by Milan Subotic (Katy, Texas) and Jeffrey Ham (Katy, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotating control device (RCD) includes: a drive guide element surrounding a tubular and co-rotating with the tubular; a bearing housing comprising a bearing assembly for rotatably supporting the drive guide element; a rotary seal housing comprising rotary seals surrounding the drive guide element and limiting ingress of a working fluid flowing around the tubular into the bearing ...