Huntley & Huntley Energy Exploration, LLC


Is a privately-owned oil and natural gas company that specializes in upstream development of natural gas resources. Currently, HHEX applies leading-edge, proven exploration and production techniques, since its initial entry into the Appalachian basin in 2012.

For the past several years, HHEX has been developing a premier position in the core Marcellus, Utica, and Upper Devonian basins of Southwestern Pennsylvania, assembling over 100,000 largely contiguous acres rich in natural gas resources. HHEX also holds a non-operated interest in 62 unconventional Marcellus natural gas wells with a large, publicly traded E&P independent producer.

In 2012, HHEX was developed and managed in association with Huntley & Huntley, Inc., a firm that has over a century of experience in the oil and natural gas industry.

In recent years, HHEX’s management has expanded to a team of experts who have accumulated many decades of expertise built from working with key industry players. The team has broad experience across unconventional resource plays and supporting industries, and each individual has a proven track record of employing innovative strategies that achieve operational excellence.

Experienced Leadership + Outstanding Assets = A Bright Future


HHEX’s team consists of committed professionals with diverse expertise and decades of experience in various sectors of the oil and natural gas industry. At HHEX, we believe a successful team relies on both individual strengths and effective collaboration to accomplish a shared vision, which is to maintain our position as the premier developer of oil and natural gas known for producing excellence alongside natural gas resources.

HHEX Management Team

Chris Doyle

Chief Executive Officer of HHEX

Mr. Doyle previously served as Executive Vice President of Operations at Chesapeake Energy where he was responsible for the company’s Marcellus and Utica developments in the Appalachian Basin and the Powder River Basin assets in Wyoming. In addition, Mr. Doyle was responsible for Chesapeake’s Marketing, Midstream, Supply Chain, and centralized Operations and Technical Support. Prior to CHK, Mr. Doyle spent 18 years at Anadarko Petroleum in various leadership roles, most recently as Vice President of Operations for the Southern and Appalachia Region. Mr. Doyle holds a B.S. in Petroleum Engineering from Texas A&M University and an M.B.A. from Rice University.

HHEX Management Team

Chuck Griffie

Senior Vice President of Midstream & Marketing
Prior to joining HHEX, Mr. Griffie was Director of Midstream Engineering at Anadarko where he was responsible for U.S. Onshore midstream developments and assets for both Anadarko and Western Gas. During Mr. Griffie’s tenure at Anadarko, he held various leadership roles including U.S. Onshore Business Advisor where he worked directly for the U.S. Onshore EVP, Eagleford Operations Manager, and Appalachian Basin Midstream Manager. Mr. Griffie holds an undergraduate degree in Mechanical Engineering from University of Colorado, an M.B.A. from University of Colorado at Denver, and graduated from Harvard Business School’s Program for Leadership Development.

HHEX Management Team

Chris Campbell

Vice President of Finance and Accounting
Mr. Campbell served for nearly ten years in various positions of increasing responsibility at Anadarko Petroleum Corporation in the areas of investor relations, strategic planning, and corporate finance & accounting. Mr. Campbell spent nearly 10 years in the financial services industry as a research analyst on the sell-side at Morgan Stanley and Jefferies and as a credit investment analyst on the buy-side at Prudential Capital Group. Mr. Campbell holds a BBA Magna Cum Laude from Southern Methodist University, a CPA license in the state of Texas, and the Chartered Financial Analyst® designation.

HHEX Management Team

Chris Powell

Vice President of Land and Business Development
Prior to joining HHEX, Mr. Powell was CONSOL Energy’s Vice President of Business Development, where he worked on over $12 billion worth of transactions, and later became the Vice President of Land Administration. Prior to CONSOL Energy, Mr. Powell worked at Alcoa Inc. as a Global Commodity Manager and Internal Financial Auditor, and Equitable Production Company as a Senior Business Analyst. Mr. Powell holds an undergraduate degree in Biology from the Allegheny College and an M.B.A. from the University of Pittsburgh.

HHEX Management Team

Vance Hazzard

Vice President of Operations
Mr. Hazzard served as Vice President of Operations at Pioneer Natural Resources where he was responsible for all production and facility construction operations in Pioneer’s Eagle Ford Division. He held a similar role for the Barnett Shale. During his 16 years with Pioneer, he also worked in various leadership roles including Alaskan Drilling Manager. Before Pioneer, Mr. Hazzard spent 10 years in ARCO Oil & Gas in various drilling, engineering, and supervisory positions. Mr. Hazzard holds a B.S. in Petroleum Engineering from the Colorado School of Mines and is a Professional Engineer in the State of Texas.

HHEX Management Team

Jennifer Hoffman

Vice President of EHS & Regulatory
Prior to joining HHEX, Ms. Hoffman spent five years at Chesapeake Energy in the Regulatory Department, including time spent as Regulatory Director of the Northern Division, where her team was responsible for permitting and regulatory affairs activities in the Marcellus and Utica plays. Before Chesapeake, Ms. Hoffman spent 14 years at Susquehanna River Basin Commission in various roles, including Monitoring & Assessment Chief. Ms. Hoffman holds a B.S. and an M.S. in Biology from Shippensburg University.

HHEX Board of Directors

HHEX Board of Directors

Keith Mangini

Keith Mangini serves as President and Chief Executive Officer of Huntley & Huntley, Inc., a position he has held since 1995. Mr. Mangini joined Huntley & Huntley in 1978 as a Staff Geologist and was promoted to Vice President of the Company in 1986. In 1995, he purchased Huntley & Huntley, Inc. to become its fourth-generation owner, assuming his current role as CEO and President. Mr. Mangini is a licensed geologist in Pennsylvania, a member of the American Association of Petroleum Geologists, the former president of the Pittsburgh Association of Petroleum Geologists, and Chairman of the Board of the YMCA Deer Valley.

HHEX Board of Directors

Michael Hillebrand

Board Member
Michael Hillebrand serves as Chief Operations Officer for Huntley & Huntley, Inc, a position he has held since 1998. Prior to Huntley & Huntley, Mr. Hillebrand worked for a Manhattan-based power generation company where he was responsible for procuring over 100 Bcf of gas and 2,000 properties through the company’s acquisition and non-operated investment strategies. Mr. Hillebrand serves on the board of directors of the Pennsylvania Independent Oil and Gas Association and is a board member of Allegheny Counties Energy & Environment Committee.

HHEX Board of Director

Angelo Acconcia

Board Member
Angelo Acconcia serves as a Senior Managing Director in the Blackstone’s Private Equity Group. Prior to Blackstone, Mr. Acconcia worked at Morgan Stanley’s Investment Banking Division in their Global Energy and Mergers and Acquisitions departments and at the Canadian Imperial Bank of Commerce’s Investment Banking Division. Mr. Acconcia is a member of the Investment Committee for Blackstone Energy Partners II, a $4.5 billion private equity fund dedicated to the energy sector, and also serves as a director of Beacon Oil & Gas, Brix & Harvest, Gavilan Resources, Guidon Energy, Jetta Energy Permian, Primexx, LLOG, Osum Oil Sands, Royal Resources, and Vine Oil & Gas. Mr. Acconcia received an Honors degree in Business from Queen’s University in Canada, where he graduated with First Class Honors.

HHEX Board of Directors

Eric Liaw

Board Member
Eric Liaw serves as a Managing Director in Blackstone’s Private Equity Group. Prior to Blackstone, Mr. Liaw was a Principal at TPG Capital where he evaluated and executed investment opportunities in the energy sector and was an associate at Bain Capital, where he focused on private equity investments in a wide range of industries. Mr. Liaw is currently a director of Guidon Energy, Jetta Energy Permian, Primexx, and Royal Resources. Mr. Liaw received his BA, with highest honors, and BBA, with highest honors, from the University of Texas at Austin, and received his MBA, with distinction, from Harvard Business School.

HHEX Board of Directors

John Lee

Board Member
John Lee serves as an Associate in Blackstone’s Private Equity Group. Prior to Blackstone, Mr. Lee was an associate at TPG Capital where he was involved in the analysis and execution of private equity investments in a variety of sectors and was an Investment Banking Analyst at Merrill Lynch. Mr. Lee received a B.S. in Mathematical & Computational Science, a B.A. in Economics from Stanford University, and received his MBA from Harvard Business School.

HHEX Management Team

Eric Marsh

Board Member
Eric Marsh serves as Chief Executive Officer of Vine Resources. Prior to Vine, Mr. Marsh spent 13 years at Encana Corporation in a number of leadership roles, including Senior Vice President of Encana’s USA Division. Mr. Marsh sits on the Governor’s Task Force for the State of Wyoming Engineering Development and has served on both the University of Wyoming Foundation and the University of Wyoming Engineering Accreditation Board.


 At HHEX, we responsibly and efficiently develop natural gas resources while serving as stewards of the communities where we operate. We strive to actively employ our core values daily, ensuring that we are the oil and natural gas company that communities trust most.

Community Protection

HHEX prioritizes the well being of the environment and the public in the communities where we operate above all else. As industry leaders who strive to reach operational excellence day after day, HHEX commits to being safe, clean, and compliant, and to acting with integrity in all facets of our business.

Community Outreach

HHEX focuses its primary charitable and community contribution in municipalities within the company’s operating area, particularly concentrating on education, public safety, and environmental protection.

Community Partnerships

At HHEX, it is a priority to align our own business interests with those of community leaders and stakeholders, as we are committed to providing best-in-class operations that serve as the foundation for long-lasting and positive relationships for all parties involved. In building community partnerships, HHEX values communication and collaboration to ensure that high levels of satisfaction and trust abound in areas that we serve.

Huntley & Huntley Energy Exploration

In Southwestern PA, Huntley operates nearly 400 conventional oil and natural gas wells and has interests in 47 unconventional Marcellus wells.


Huntley & Huntley Energy Exploration, LLC

501 Technology Drive Suite 1200 Canonsburg, PA 15317

Main Office Phone #:  724-754-0110
Toll Free #:  1-877-808-4811

HHEX 24 Hour Emergency
Contact Number #
:  412-357-4100
If this is an emergency, please dial 911