US Patent Issued to Magnetic Variation Services on Oct. 14 for "Wellbore friction depth sounding by oscillating a drill string or casing" (Colorado Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,287, issued on Oct. 14, was assigned to Magnetic Variation Services LLC (Denver).

"Wellbore friction depth sounding by oscillating a drill string or casing" was invented by Stefan Maus (Boulder, Colo.), Zackary Whitlow (Denver) and Jin Sun (Denver).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods determine friction in a borehole during drilling operations. A drilling system applies oscillatory angular movement at the top of a drill string in a wellbore during drilling by the drilling system, and measures a torque applied to the drill string and an angular position of the drill string. Based on the measured torque and the measured an...