ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,148, issued on July 1, was assigned to Halliburton Energy Services Inc. (Houston).

"Systems and methods for characterizing a subterranean formation having a formation boundary surface" was invented by Tingting Zeng (Houston), Robert P. Darbe (Tomball, Texas), Eirik Hansen (Stavanger, Norway) and Siyang Song (Cypress, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for characterizing a subterranean formation that include a drill bit for drilling a deviated wellbore through the formation and that repeatedly changes direction. Also included is a directional drilling system and measurement equipment to detect a property of the fo...