Patterson-UTI Energy, Inc. announced that James "Mike" Holcomb has been promoted to the new position of Chief Operating Officer of Patterson-UTI Energy. Mr. Holcomb joined Patterson-UTI in 1988 through its acquisition of Robertson Onshore and has held numerous key leadership positions at Patterson-UTI over the years. For the past ten years, he has served as President of Patterson-UTI Drilling Company LLC and has also held numerous leadership positions with the International Association of Drilling Contractors.