Patterson-UTI Energy appoints Andy Hendricks as COO, CEO Doug Wall to retire

Patterson-UTI Energy announced that William Andrew Hendricks, Jr., 47, will join Patterson-UTI as COO on April 2. Hendricks comes from Schlumberger where he has served since 2010 as President, Schlumberger Drilling and Measurements. As Division President, Andy has had responsibility for a multi-billion dollar global business unit with thousands of employees worldwide. In addition, the company announced that Doug Wall, President and CEO, has 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 CEO upon Wall's retirement.