The board at US oilfield services firm Halliburton has appointed president and chief executive Jeff Miller as its chairman.
It comes after Dave Lesar retired on December 31, 2018.
Mr Miller said: “I appreciate the confidence that the board has placed in me.
“Halliburton has a 100-year legacy of delivering industry leading returns and superior customer service, and I am honored to lead our company as we continue that tradition.”
Robert Malone will continue as lead independent director.