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Senior
Advisors

First Reserve’s Senior Advisor network is comprised of highly respected individuals who possess deep experience and relationships in the global energy industry.

The Senior Advisors are independent professionals that work with First Reserve and our portfolio companies on a non-exclusive basis, originating new investment opportunities, advising on transactions, contributing to developing sector insights, providing operational and energy industry-specific expertise, and leveraging a broad base of key relationships. First Reserve believes its association with the Senior Advisors enhances our ability to create value, serving both our investors and our portfolio companies by optimizing opportunities around the world. While not employees of First Reserve, these professionals have a strong and strategic professional connection with First Reserve.

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  • Gary BuchlerSenior Advisor
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    Gary Buchler

    Senior Advisor

    Gary Buchler joined the First Reserve Senior Advisor Program in 2018. In this role, Mr. Buchler is expected to leverage his broad experience in the midstream and midstream-related equipment and services industries to enhance First Reserve’s portfolio and expertise in these sectors.

    Most recently, Mr. Buchler served as Chief Operating Officer of the Gas Pipeline Business Unit for Kinder Morgan (“KMI”).  Prior to holding that position, he spent approximately 40 years with KMI in various roles overseeing the engineering, operations, environment/health/safety, and land management business functions of the company.  Additionally, Mr. Buchler played a key role in multiple M&A transactions for Kinder Morgan.  Mr. Buchler holds a B.S. in Electrical Engineering from the University of Iowa and an MBA from the Keller Graduate School of Management.


  • Gary HalversonSenior Advisor
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    Gary Halverson

    Senior Advisor

    Gary Halverson joined the First Reserve Senior Advisor Program in 2016. In this role, Mr. Halverson is expected to leverage his extensive experience in the oil and gas industry, particularly in manufacturing, equipment and oilfield and general energy services, to enhance First Reserve’s portfolio and expertise in these sectors.

    Mr. Halverson most recently served as Senior Vice President of Cameron International Corporation and Group President of Drilling and Production Systems. Prior to holding these positions, he spent 35 years with Cameron in various management roles both in the United States and overseas including President of Surface Systems and Vice President and General Manager, Western Hemisphere. Mr. Halverson also serves as Chairman and Board of Directors of the Petroleum Equipment Suppliers Association (PESA) as well as serving on the board of General Committee of Special Programs (GCSP), American Petroleum Institute (API), Well Control Institute (WCI) and U.S. delegate to the World Petroleum Congress (WPC). He holds an A.A. from Odessa College.

  • Steve MuellerSenior Advisor
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    Steve Mueller

    Senior Advisor

    Steve Mueller joined the First Reserve Senior Advisor Program in 2016. In this role, Mr. Mueller is expected to leverage his extensive operational experience in the U.S. oil and natural gas industries to enhance First Reserve’s portfolio.

    Most recently, Mr. Mueller spent 8 years with Southwestern Energy in various management roles including Chairman of the Board, President and CEO, and President and COO. Prior to holding these positions, Mr. Mueller served as Executive Vice President of CDX Gas after spending 6 years with Houston Exploration Company where he held various senior positions. In addition, Mr. Mueller has 26 years of further industry experience with Belco Oil and Gas Corporation, American Exploration, Fina Oil and Tenneco Oil. Mr. Mueller is a member of the Board of Directors of the Gas Technology Institute (GTI) and holds a B.S. from the Colorado School of Mines.
  • Tim ProbertSenior Advisor
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    Tim Probert

    Senior Advisor

    Tim Probert joined the First Reserve Senior Advisor Program in 2014. In this role, Mr. Probert is expected to leverage his broad experience in the global upstream equipment and services industry to enhance First Reserve’s portfolio and expertise in this sector.

    Most recently, Mr. Probert served as Strategic Advisor to the CEO of Halliburton Company. Prior to holding that position, he spent 11 years with Halliburton in various roles including President of Strategy & Corporate Development, President of Global Business Lines and President of the Drilling & Evaluation Division. Previously, Mr. Probert served as President and CEO of ION Geophysical Corporation (formerly Input Output Inc.) after spending 27 years with various operating units of Baker Hughes Incorporated during which time he was President of Baker Hughes Inteq. He formerly served as a Director of El Paso Corp. Mr. Probert holds a B.S. from the University of London.
  • John YearwoodSenior Advisor
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    John Yearwood

    Senior Advisor

    John Yearwood joined the First Reserve Senior Advisor Program in 2013. In this role, Mr. Yearwood is expected to leverage his deep background in energy equipment services as well as global E&P to enhance First Reserve’s portfolio and expertise in these sectors.

    Most recently, Mr. Yearwood served as CEO and COO of Smith International Inc., a Fortune 500 company that merged with oilfield services major Schlumberger. Before joining Smith, he spent 27 years with Schlumberger in numerous operations management and staff positions around the globe. Mr. Yearwood currently serves as the Lead Director on the Board of Nabors, as well as an Independent Director on First Reserve portfolio companies Barra Energia and Dixie Electric. He holds a B.S. from Oxford Brookes University and is a Member of the Society of Petroleum Engineers.