ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,629, issued on June 17, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Well planning system" was invented by Lucian Johnston (Sugar Land, Texas) and Michael Dietrick Sturm (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method that include receiving a digital well plan and issuing drilling instructions for drilling a well based at least in part on the digital well plan. The system and method also include comparing acquired information associated with drilling of the well with well plan information of the digital well plan to determine if there is at least one deviation from the digital well plan. The system ...