Patterson-UTI Energy Inc. named William Andrew Hendricks as its new chief operating officer.

Hendricks comes from Schlumberger Ltd. where he has served since 2010 as president, Schlumberger drilling and measurements. As division president, He has had responsibility for a multi-billion dollar global business unit with thousands of employees worldwide.

Hendricks attended Texas A&M University, receiving a bachelor of science degree in petroleum engineering in 1987. He also completed executive finance training at IMD in Switzerland in 2008. He started his career working for Ocean Drilling and Exploration Co. as a roustabout and roughneck on the Ocean Spur jackup rig in the Gulf of Mexico.

In addition, the company reported that Doug Wall, president and chief executive officer, informed the company's board of directors of his intention to retire later this calendar year, and it is expected that Hendricks will assume the position of president and chief executive officer upon Wall's retirement.