ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,573, issued on April 1, was assigned to NABORS DRILLING TECHNOLOGIES USA LTD. (Houston).

"Method and apparatus for steering a bit using a quill and based on learned relationships" was invented by Scott Gilbert Boone (Houston), Brian Ellis (Spring, Texas), Colin Gillan (Houston) and Beat Kuttel (Spring, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of using a quill to steer a bit when elongating a wellbore, with the method including receiving real-time data associated with elongating the wellbore, wherein the real-time data associated with elongating the wellbore comprises data associated with: actual toolface orientation; surface-mea...