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Executive Team

NexTier - Robert Drummond

Robert Drummond

President & Chief Executive Officer

Mr. Drummond serves as NexTier’s President and Chief Executive Officer. He joined Keane Group Inc. (now known as NexTier Oilfield Solutions Inc.) in August 2018 as Chief Executive Officer, and was elected as President in October 2019. Prior to joining Keane, Mr. Drummond served as the President & Chief Executive Officer of Key Energy Services, Inc. and served for more than 30 years at Schlumberger Limited in various executive positions, including President of North America, Vice President & General Manager U.S. Land, Vice President of Global Sales, Vice President General Manager U.S. Gulf of Mexico, and President North American Offshore and Alaska.

Mr. Drummond has been a Supervisory Director at Frank’s International N.V. since May 2017, and sits on the board of directors of the Petroleum Equipment Suppliers Association and the advisory board for the University of Alabama College of Engineering. He has previously served on the board of directors of the National Ocean Industries Association, the Houston Offshore Energy Center, the Greater Houston Partnership, the API Upstream Committee, and as an Advisory Board Member of the University of Houston Global Energy Management Institute. He holds a B.S. in Petroleum Engineering from the University of Alabama.

Kenneth Pucheu Photo

Kenneth Pucheu

Senior Vice President & Chief Financial Officer

Mr. Pucheu has served as NexTier’s Senior Vice President and Chief Financial Officer since December 2019. He joined Keane Group Inc. (now known as NexTier Oilfield Solutions Inc.) in 2016 as Vice President of Finance. a Mr. Pucheu has 20 years of experience in corporate and operational finance across the energy industry. Prior to joining Keane, Mr. Pucheu served at Schlumberger Limited for 15 years in various senior-level positions, including Head of Finance for Drilling and Measurements, and Director of Finance for North America Offshore.

Mr. Pucheu earned a B.S. in Accounting from the University of Louisiana at Lafayette.

NexTier - Gregory L. Powell

Greg Powell

Executive Vice President & Chief Integration Officer

Mr. Powell has served as NexTier’s Executive Vice President and Chief Integration Officer since October 2019. He joined Keane Group Inc. (now known as NexTier Oilfield Solutions Inc.) in March 2011 as President and Chief Financial Officer.

Prior to joining Keane, Mr. Powell worked as an Operating Executive for Cerberus Capital Management L.P. During his tenure, he was responsible for partnering with portfolio companies to maximize value creation. Mr. Powell has worked across a broad set of businesses including: automotive, consumer products, technology, leasing, building products, and retail. Prior to joining Cerberus, Greg worked for 10 years in various divisions of General Electric. In his last role with GE, he was the Chief Financial Officer for GE Aviation – Military Systems.

NexTier - Kevin McDonald

Kevin McDonald

Executive Vice President, Chief Administrative Officer & General Counsel

Mr. McDonald serves as NexTier’s Executive Vice President, Chief Administrative Officer and General Counsel. He joined Keane Group Inc. (now known as NexTier Oilfield Solutions Inc.) as Executive Vice President, General Counsel & Secretary in November 2016.

Prior to joining Keane, Mr. McDonald served in leadership roles at Marathon Oil Corporation from 2012 to 2016, including as Deputy General Counsel of Corporate Legal Services and Government Relations, Deputy General Counsel of Governance, Compliance & Corporate Services, and Assistant General Counsel.

Mr. McDonald practiced as a partner at the international law firm Fulbright & Jaworski LLP (now Norton Rose Fulbright LLP) in 2012. Mr. McDonald previously held various counsel positions, including President & Chief Executive Officer and acting General Counsel at Arms of Hope, a nonprofit organization, from 2008 to 2012, Senior Vice President, General Counsel & Chief Compliance Officer at Cooper Industries from 2006 to 2008, Associate General Counsel at Anadarko Petroleum from 2006 to 2008, and Managing Counsel (Litigation) at Valero Energy from 2002 to 2004.

He began his career as an associate at Norton Rose Fulbright LLP between 1992 and 2001. Mr. McDonald graduated with a BS from Texas A&M University and JD from the University of Texas School of Law.

Image - Mike Galvan

Mike Galvan

Senior Vice President – Chief Accounting Officer & Treasurer

Mr. Galvan serves as NexTier’s Senior Vice President – Chief Accounting Officer and Treasurer, a position he has held since October 2019 as part of our merger with C&J Energy Services, Inc. (“C&J”). He served with C&J as Senior Vice President – Chief Accounting Officer and Treasurer from September 2018 until joining NexTier in 2019. He also served at C&J as Interim Chief Financial Officer, a position he held from March 2018 until September 2018. Prior to serving as Interim Chief Financial Officer, he served with C&J as Senior Vice President – Chief Accounting Officer from May 2017 until March 2018.  He joined C&J in 2014, serving as Vice President of Technical Accounting, before being promoted to Senior Vice President—Chief Accounting Officer. He has over 25 years of accounting and financial experience, and among other duties, is currently responsible for the Company’s finance and accounting functions.

Prior to joining C&J, Mr. Galvan served as Senior Vice President and Chief Accounting Officer at Mattress Firm from December 2012 to May 2014, and as Vice President and Chief Accounting Officer at Main Street Capital Corporation from January 2008 to December 2012. Prior to 2008, he served in various accounting and financial capacities with increasing responsibility at numerous companies, including Enron Corporation and Direct Energy. Mr. Galvan started his career in 1994 with Arthur Anderson LLP in Houston, Texas, most recently having served as senior auditor.

Mr. Galvan graduated with an MPA and BBA from the University of Texas in 1994.

Ian Henkes

Ian Henkes

Senior Vice President – Operations

Mr. Henkes serves as NexTier’s Senior Vice President for Operations. He joined Keane Group Inc. (now known as NexTier Oilfield Solutions Inc.) in February 2016 and was Vice President of South Region until October 2019.

Prior to joining Keane, he served as Human Resources Manager for Schlumberger’s Drilling & Measurements global businesses from August 2014 to February 2016, as Vice President for North America at Pathfinder Energy Services from January 2013 to September 2014, and as Personnel Manager at Pathfinder Energy Services from September 2012 to December 2012. Prior to joining Pathfinder Energy Services, Mr. Henkes worked in various field, operations, sales, management, and HR positions around the world from 1994 to 2012. Mr. Henkes has extensive experience in wireline, logging while drilling, and directional drilling operations in North America, Latin America, and northern Europe.

Billy Driver

Billy Driver

Senior Vice President – Product Lines

Mr. Driver joined NexTier as Senior Vice President, Product Lines in October 2019 as part of our merger with C&J Energy Services, Inc. (“C&J”). He served  with C&J as President – Well Construction, Intervention and Completion Services, leading both C&J’s Well Construction and Intervention Services division and Completion Services division from May 2018 until the merger. He previously led C&J’s fracturing business as Senior Vice President – Fracturing beginning in October 2012 . Mr. Driver joined C&J in August 2007 as Vice President – Fracturing, a position he held through October 2012. Throughout his tenure at C&J, he was been instrumental in overseeing the operational growth and success of C&J’s hydraulic fracturing business.

Mr. Driver has nearly 30 years of experience in the oilfield services industry. Prior to joining C&J, he worked for Halliburton in multiple roles, including equipment operator, service supervisor, field service quality coordinator, operations manager and camp manager from August 1990 to August 2007.

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