US Patent Issued to Schlumberger Technology on June 30 for "Increased drill bit or lower BHA inertia for reducing HFTO" (British Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,019, issued on June 30, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Increased drill bit or lower BHA inertia for reducing HFTO" was invented by Ashley Bernard Johnson (Milton, Great Britain) and David Scott (Huntingdon, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for estimating and reducing high-frequency torsional oscillations (HFTO) during a downhole drilling operation includes estimating an HFTO propensity of an initial BHA configuration using a model that relates the HFTO propensity to at least a rock strength of a subterranean formation, a radius or diameter of the borehole, a drill bit body den...