ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,221,835, issued on Feb. 11.
"Downhole reamer with rotating sleeve" was invented by Corey Cipperley (Midland, Texas), Erin Venables (Hinton, Canada) and Pete Vanderveen (Phoenix).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drill string reaming tool for reaming a wellbore while drilling as part of the bottom hole assembly on a drill string comprises a reaming sleeve having teeth or cutters thereon. In some embodiments, the reaming sleeve rotates around the longitudinal axis of the tool unpowered. In some embodiments, the rotation of the reaming sleeve is powered by a turbine driven by mud flowing through the drill string."
The patent was filed on Nov...