US Patent Issued to Schlumberger Technology on July 21 for "Mitigating torsional drill string oscillations" (British Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,100, issued on July 21, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Mitigating torsional drill string oscillations" was invented by Ashley Bernard Johnson (Cambridge, Great Britain), Riadh Boualleg (Stonehouse, Great Britain) and Ross Lowdon (Stonehouse, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Wellbore operations include rotating a drill string in a wellbore. The drill string includes a rotary steerable system having at least three pads configured to contact the wellbore wall to steer a direction of drilling. These are simultaneously actuated while rotating the drill string to mitigate stick slip, harmoni...