Key Energy Services Inc. has appointed CFO Marshall Dodson as interim CEO after President and CEO Robert Drummond, who has run the company since November 2016, resigned to pursue “another opportunity.” Drummond was prepared to continue in his position for 90 days, but the board named Dodson to take the helm as it searches for a new chief. Drummond is to remain on the board. Key, which restructured following a voluntary bankruptcy filing two years ago, is the largest onshore, rig-based well servicing contractor based on the number of rigs owned. It provides a range of well intervention services, with operations in all major onshore oil and gas producing regions of the continental United States.