• Hart Energy Conferences Speaker Peter Allen

    Peter Allen

    Eagle Resources Group LLC
    Senior Vice President, Operations

    Peter Allen is the Chief Operating Officer for Eagle Resources Group (Eagle) a Tulsa based energy group.  He is directly responsible for operations of all Eagle’s affiliate companies involved with oil and gas exploration, production and environmentally focused energy services. Peter is leading Eagle through the industry’s transition to responsibly sourced energy and is passionate about employing environmental stewardship in future development as well as the renewal or retirement of legacy oil and gas assets.

     In 2007 Peter began his career within FMC Technologies’ subsea drilling division based in Houston. He held engineering and project management roles involved with subsea well construction, primarily in the Gulf of Mexico.  In 2009, Peter, on behalf of his team, was awarded the FMC Global Quality Award for reducing FMC-related offshore non-productive time by 50%.

     Peter joined Eagle in early 2011 and helped lead them to a 6.3x MOIC for their Equity investor, with  the $650MM asset sale to Midstates Petroleum in late-2012, as well as successful development and an approximate 2.0 MOIC divestiture of Eagle’s Merge and SCOOP assets in 2017 and 2019.

    Peter comes from a fourth-generation Oklahoma oil and gas family and earned his BS in Mechanical Engineering Technology from Oklahoma State University.”

  • Hart Energy Conferences speaker Allyson Book

    Allyson Anderson Book

    Baker Hughes Co.
    Vice President, Energy Transition

    Allyson Anderson Book is vice president of energy transition for Baker Hughes. In this role she oversees Baker Hughes’ energy-transition strategy and works to develop new energy products and services that help lower carbon emissions while meeting the world’s growing energy needs.

    In 2021 alone, she was recognized by Petroleum Economist as among Top 10 Women Leading Energy Transition in Sustainability, by Oil & Gas Investor as among 25 Influential Women in Energy, and by Hart Energy for its ESG Champion of Year Award.

    Before joining Baker Hughes she served as the executive director of the American Geosciences Institute, which represents more than 250,000 geoscientists and focuses on increasing public awareness of the role geosciences play in society’s use of resources. Prior to that, she held a number of academic, policy and senior government positions, including teaching at Georgetown University, working for the U.S. Senate Energy and Natural Resources Committee and serving as the associate director of strategic engagement of the Bureau of Safety and Environmental Enforcement (BSEE) at the U.S. Department of the Interior. She began her career as a geoscientist for ExxonMobil.

    She holds bachelor’s degrees in geology and music from the University of Northern Iowa, and a master’s degree in geology from Indiana University-Purdue University Indianapolis.

  • Calvin Cahill

    Calvin Cahill

    Calyx Energy III LLC
    President & CEO

    With over 40 years’ experience in the oil & gas industry, Calvin has been involved in almost every aspect of the business including stimulation designs and implementation with Dowell (now Schlumberger) as a field engineer, ultimately leaving Dowell the area engineering manager for the western United States. Calvin has been involved in planning and drilling hundreds of horizontal wells in the United States, Canada, and Australia. Calvin has held executive positions at Martin Exploration, Hanover Compression, and Valerus Compression. Calvin has also been founder, cofounder or partner in Econoflow Inc, Vectra CBM, Calyx Energy I & II and currently in Calyx Energy III and Riverside Midstream LLC.

  • detring_derek

    Derek Detring

    Detring Energy Advisors

    Derek Detring's career has been fully devoted to energy advisory, where he has completed over $8 billion in capital raising and M&A advisory transactions. Derek spent the first four years of his career at Merrill Lynch, where he primarily focused on capital raising and M&A assignments for large, publicly-listed companies, followed by four years at Integral Advisors, a boutique A&D advisory firm he co-founded in 2009, and finally Wells Fargo where he spent one year in their A&D group. For the past three years Derek has lead his new company, Detring Energy Advisors, which focuses on the mid-cap A&D market.

    Derek graduated summa cum laude and first in his engineering class from Vanderbilt University and attended the Wharton Executive Education Program, where he passed with honors.

  • Essman.Luke

    Luke Essman

    Canyon Creek Energy
    President & CEO

    Luke Essman is the President and Chief Executive Officer (CEO) of Canyon Creek Energy-Arkoma, LLC (CCEA) a Tulsa based oil and gas company. CCEA is a joint venture between Vortus Investment Advisors a Fort Worth, TX private equity firm and private investors to develop assets located in Oklahoma’s Arkoma Basin. Prior to forming Canyon Creek Energy-Arkoma, in 2014 Essman partnered with ArcLight Capital Partners, a Boston, MA private equity firm, to form Canyon Creek Energy Partners and sold its assets to an unnamed public company in 2015. In 2012 Essman founded Canyon Creek Resources focusing on exploiting conventional assets in the Mid-Continent region until the company’s sale in 2014. Prior to founding his energy companies, Essman spent ten years in commercial banking with Bank of Oklahoma and Summit both operating in Tulsa, Oklahoma. Essman was named a Top 40 Under 40 professional in Oklahoma by Oklahoma Magazine in 2014 and a Top 30 Under 40 by Oil and Gas Investor Magazine in 2016. Mr. Essman is a graduate of Leadership Tulsa Class 49. Essman currently serves on the Board of the Oklahoma Independent Petroleum Association (OIPA) and he is currently the Board President of The Indian Healthcare Resource Center a non-profit serving the medical needs of Oklahoma’s Native American population. Essman is a graduate of Oklahoma State University with a B.S. in Finance.

  • Brad gray

    Bradley G. Gray

    Diversified Energy
    Executive Vice President & Chief Operating Officer

    Brad Gray is executive vice president and COO at Diversified Energy Company (DEC). He also serves as an executive director on the board of directors. In his COO role, Gray oversees all upstream, midstream, engineering, information technology and various other administrative functions.

    Gray joined DEC pre-IPO in October 2016 when the company had 80 employees and has been instrumental in acquiring and integrating 20 acquisitions over the past five years. Prior to joining DEC, he held the position of senior vice president and CFO for Royal Cup Inc., a U.S.-based commercial coffee roaster and wholesale distributor of tea and other beverage related products. Prior to Royal Cup Inc., from 2006 to 2014, he worked in the petroleum distribution industry for The McPherson Companies Inc., and held the position of executive vice president and CFO. Before McPherson Companies, he worked for over a decade in various financial and operational roles with the previously listed NYSE retail group, Saks Incorporated, and he started his professional career with Arthur Andersen LLP. 

    Gray received a bachelor’s of science degree in accounting from the University of Alabama and earned his CPA license (Alabama).

  • Hart Energy Conferences Speaker Tim Helms

    Tim Helms

    Citizen Energy
    Chief Financial Officer

    Bio coming soon!

  • Aaron ketter DUG Midcontinent hart energy

    Aaron Ketter

    Devon Energy Corp.
    Vice President, Midcontinent and South Texas

    Aaron Ketter is vice president of the Midcontinent and South Texas business at Devon Energy. He manages multi-disciplined teams that are responsible for creating and executing the corporate strategy encompassing financial performance, capital program and business development opportunities.

    Prior to his current position, Ketter held various roles at Devon including vice president of the company’s Rockies business unit, vice president of strategic planning, manager of midstream and marketing, acquisition and divestitures, deepwater exploration and multiple onshore engineering assignments.

    Ketter earned a MBA from the University of Chicago Booth School of Business and a bachelor’s of science  degree in petroleum engineering from the University of Oklahoma. He currently serves on the Board of Trustees for the Oklahoma City Museum of Art.

  • Hart Energy Conferences speaker Bethel King

    Bethel King

    RBAC Inc.
    Senior Director, Market Analysis

    Bethel King has over twenty-five years of energy industry experience. From 1985 to 1993, Ms. King supported natural gas operations for Phillips Petroleum, a large integrated producer. She spent three years supporting natural gas marketing functions, including trading system coding, design, and analysis. She also has over four years of direct experience in natural gas marketing - two years with Phillips Petroleum and GPM and two and a half years with Williams Energy Services holding positions as Gas Supply Representative, Gas Operations Representative, Gas Control Representative, Transportation and Exchange Representative, and later, Natural Gas Trader in the Midcontinent and the West. She joined Williams Energy Market Analysis in 1998 as Senior Analyst before progressing to Manager of Natural Gas Analysis with as many as eight direct reports.


    Ms. King oversaw the development and utilization of Fundamental Models that use linear and non-linear approaches to support trading and origination activities. Her combination of computer expertise and energy market knowledge made her uniquely qualified within Williams. Ms. King worked in an integrated commodity environment with Power, Crude Oil, NGLs, Coal, and Global Gas such as LNG. Another responsibility held by Ms. King was to attract, develop, and retain key employees within the NG and NGL Market Analysis group by identifying specialized training needs, providing education on trading and commodities, and developing individual progression plans.

    Beginning in 2003, Ms. King began a successful alliance with RBAC, Inc. as a Senior Consultant, providing personalized analysis using the GPCM® Fundamental Gas Pipeline Model for companies throughout the industry. Bethel King is currently Director of Market Analysis which includes overseeing all input data including infrastructure, supply curves, and demand curves used in preparing the quarterly GPCM Base Case data releases. Ms. King is also RBAC, Inc.’s primary trainer and mentor for clients; she also provides ad-hoc expertise on projects for a variety of industry participants.

    Modeling of the Natural Gas industry provides insight for strategic planning, pricing and flow trends, value assessment, bidding strategies, fundamental analysis and risk assessment for structured energy deals, and interpreting the dynamics that affect the natural gas market such as market power, supply, demand, storage, capacity, loads, transportation, congestion, tariffs, pipeline expansions, capacity release and infrastructure.

    Ms. King has a Bachelor of Science in Management Science/Computer Systems from Oklahoma State University and an Associate degree with Honors in Computer Science from NEO A&M. Bethel King has spoken at several industry conferences such as EPIS Electric Market Forecasting Conference on the topic Gas Market Trends and Forecasting. Ms. King is also a contributing author of Fuel Forecasting in Volatile Markets Make for Believable Strategies in Electric & Natural Gas Business: Understanding It (2003 and Beyond).

  • Hart Energy Conferences speaker Dave Law

    Dave Law

    Vice President, Intelligence

    David joined the legacy RS Energy Group in 2018, focusing on well design and geological characterization across major L48 plays. Prior to joining Enverus, David worked as a G.I.T. with Repsol on a liquids rich Montney asset. David graduated from the University of Calgary with B.Sc. in Geology. 

  • Jim Leathers dug midcontinent supeerior pipeline

    Jim Leathers

    Superior Pipeline
    Vice President, Commercial

    Jim Leathers is the vice president of commercial activities for Superior Pipeline Company.  Superior Pipeline Company is a natural gas midstream company that was founded in 1996 and operates natural gas gathering and processing facilities in Oklahoma, Kansas, Texas, Pennsylvania, and West Virginia.

    He has more than 30 years of experience in the natural gas and natural gas liquids industry including natural gas supply and marketing, midstream business development and midstream accounting. Prior to joining Superior Pipeline, Leathers was with Devon Energy, CMS Field Services, Continental Natural Gas and Phillips Petroleum. 

    He is the current chairman of GPA Midstream’s program committee and is a member of several industry associations. Jim is a graduate of Northeastern State University with a B.S. in Accounting.

  • Seth Moore catalyst energy dug midcontinent

    Seth Moore

    Catalyst Energy Services
    Chief Operating Officer

    Seth Moore serves as EVP and COO, as well as co-founder of Catalyst Energy Services. Mr. Moore’s 34 years of industry expertise includes cementing, hydraulic fracturing, wireline, coiled tubing, tools and testing, expandable technologies, plug and abandonment, well control and blow out prevention, total fluids management, rig services, fishing & rental tools, tubular rentals, frac stack & flowback and plug & abandonment. He has experience in 9 countries and on 3 continents in various international and domestic leadership roles, across multiple departments. This experience includes operations, business development, technology, product line management, manufacturing, engineering and engineering management. He has authored multiple SPE technical papers and holds numerous US and International patents.

    Mr. Moore holds a Bachelor of Science degree in Petroleum Services from Nicholls State University and a Master of Business Administration from Texas A&M University.

  • Hart Energy Conferences speaker Shankar Narayanan

    Shankar Narayanan

    Baker Hughes Co.
    Commercial Leader, Emissions Management

    Bio coming soon!

  • mark Oekerman Dug Midcontinent hart energy

    Mark Oekerman

    Continental Resources Inc.
    Geoscience Manager, Williston & Anadarko Basins

    Speaker bio to come.

  • Ward Polzin

    Ward Polzin

    Camino Natural Resources LLC

    Ward is CEO of Camino Natural Resources, LLC, a Denver and Oklahoma City based oil and gas company backed by Natural Gas Partners (NGP). Camino produces ~40,000 Boe/d net from ~140,000 net acres in the SCOOP/STACK/Merge plays of central Oklahoma. He was recently founding CEO of Centennial Resource Development, LLC, a Delaware Basin focused company which was purchased by Silver Run Acquisition Corporation in 2016. Ward has over 30 years of experience in the upstream oil and gas industry in engineering, commercial, investing and transactional roles. Prior to forming Camino and Centennial, Ward served as a Managing Director and a founding partner in Investment Banking at Tudor, Pickering, Holt & Co. He has a BS in Petroleum Engineering from the Colorado School of Mines and an MBA from Rice University.

  • Jason Reimbold

    Jason Reimbold

    BOK Financial Securities
    Managing Director

    Mr. Reimbold has worked in energy finance since 2005 and currently serves as Managing Director, Senior Vice President at BOK Financial. At BOKF, Mr. Reimbold is responsible for leading the investment banking group while originating and executing client mandates including acquisitions, divestments, raising capital, facilitating joint ventures, and performing asset valuation assessments. Mr. Reimbold also served as Senior Vice President at E-Spectrum Advisors, prior to BOKF's acquisition of the firm. Throughout his career, Mr. Reimbold has executed transactions in nearly every major U.S. basin. In 2007, Mr. Reimbold co-authored the book The Braking Point: America's Energy Dreams and Global Economic Realities, and he has written articles that have been published in various industry publications. Mr. Reimbold earned a BSBA in Finance from the University of Tulsa where he also studied geopolitics and international energy markets under former Deputy Assistant Secretary of Energy R. Dobie Langenkamp. Prior to attending the University of Tulsa, Mr. Reimbold served in the United States Army and U.S. Army Cavalry from 1999 to 2003.

  • Hart Energy Conferences speaker Jack Stark

    Jack Stark

    Continental Resources Inc.
    President & Chief Operating Officer

    Jack joined the company in 1992 and served as Continental’s Senior Vice President of Exploration from 1998 to 2014. Prior to joining the company as Vice President of Exploration in June 1992, he was the exploration manager for the Western Mid-Continent Region for Pacific Enterprises. From 1978 to 1988, he held various staff and middle management positions with Cities Service Co. and TXO Production Corp. He is a member of the American Association of Petroleum Geologists, Oklahoma Independent Petroleum Association, Rocky Mountain Association of Geologists, Houston Geological Society, and Oklahoma Geological Society. Mr. Stark holds a master’s degree in geology from Colorado State University.

  • Hart Energy Conferences speaker Jennifer Stewart

    Jennifer Stewart

    Equitable Origin
    Principal Advisor

    Jennifer is a senior energy executive with over 30 years of legal, financial and environmental strategy experience. She is Principal Advisor for Equitable Origin EO100™ Standard for Responsible Energy Development. She also serves as Chief Sustainability Officer for Penn LNG, a Pennsylvania-based liquefied natural gas export facility that is currently under development.

    Jennifer recently served as Vice President Strategic Growth for Baker Hughes (NYSE:BKR) Emissions Management where she led the business and commercial growth for ground and air based methane monitoring and quantification technologies, and assisted oil and gas clients with improving their emissions profile by leveraging best practices in facility design, leak detection and repair, and corporate governance.

    Early 2020 Jennifer retired from the executive leadership team at Southwestern Energy (NYSE:SWN), where she strategically led all regulatory, legislative, and environmental stewardship activity. She led Southwestern’s notable achievement of the lowest methane intensity rate of all U.S. producers, and was instrumental in the execution of contracts to sell differentiated, responsibly produced natural gas at a premium to index. Jennifer is an attorney licensed to practice in the state of Texas. She serves as an Independent Board member of Paragon Integrated Services LLC, an environmental services company where she is Chairman of the ESG committee. She is an Adjunct Law Professor at the University of Houston Law Center and previously served on the Boards of ONE Future the Natural Gas Supply Association. She has also served in leadership positions with the American Exploration and Production Counsel and the Marcellus Shale Coalition.

    She has been recognized as one of Texas’ Most Powerful Women in Oil and Gas by the National Diversity Council, a Top Woman in Energy by the Houston Business Journal, and received the Greater Houston Women’s Chamber of Commerce Trailblazer Award.

  • Camino Natural Resources

    Seth Urruty

    Camino Natural Resources LLC
    Chief Operating Officer

    Seth Urruty has been COO, co-founder and board member of Camino Natural Resources since its inception.  He previously served in various roles, most recently as Vice President – Development/A&D, at Vantage Energy from November 2007 until its sale to Rice Energy in October 2016.  After spending summers as a roustabout and pumper in the Powder River Basin, Mr. Urruty began his career as an engineer for Petro-Canada Resources, where he served from January 2006 until joining Vantage. He graduated Magna Cum Laude with a BS in Mechanical Engineering and a minor in Business Administration with a Leadership Concentration from Gonzaga University.  Mr. Urruty spends his free time with his wife and three children in Denver, CO.

  • Chad Wilkerson headshot

    Chad Wilkerson

    Federal Reserve Bank - Kansas City
    Vice President, Economist & Oklahoma City Branch Executive

    Chad Wilkerson is Branch Executive of the Kansas City Fed’s Oklahoma City Branch office. In this role, he serves as the Bank’s lead officer and regional economist in Oklahoma. He is responsible for briefing the Kansas City Fed’s president on economic trends in the state.

    His research focuses on developments in key industries in the region, including energy and manufacturing. He recruits and works closely with the Oklahoma City Branch’s board of directors and the Kansas City Fed’s Economic Advisory Council. He also supervises several business surveys.

    Wilkerson has been with the Federal Reserve since 1998 and was appointed Oklahoma City Branch Executive in 2006. He holds a master’s degree from the University of Chicago and a bachelor’s degree from William Jewell College in Liberty, Missouri.

    Wilkerson is a member of the Board of Directors for the Economic Club of Oklahoma and Oklahoma Association of Business Economists. Additionally, he serves on the Advisory Board of Trustees and Campaign Cabinet of the United Way of Central Oklahoma.

    He lives in Edmond, Oklahoma, with his wife and four children.

  • Ty Zieman Hart energy  Dug Midcontinent

    Ty Zieman

    Trailhead Exploration LLC
    Executive Vice President and Chief Financial Officer

    Ty Zieman joined Trailhead Exploration LLC in May 2019 and serves as the executive vice president and CFO. He began his career in the Energy Investment Banking group of Wells Fargo Securities, where he was involved in a wide variety of mergers and acquisitions, capital markets financings and strategic advisory assignments for clients across the upstream oil and gas, midstream and oilfield services sectors.  During his time with Wells Fargo, Zieman worked on over $15.5 billion of closed capital raises and more than $1.3 billion of closed M&A transactions.

    Zieman was the CFO at Elevation Resources, a Midland-based private equity-backed E&P with operations focused across the Permian Basin.  From 2013-2019, he worked in roles of increasing responsibility focused on finance and business development where he coordinated and assisted the planning, strategy, A&D, marketing, midstream and land functions.

    He holds a BBA. in finance and a minor in accounting, graduating with high honors from the McCombs School of Business at The University of Texas at Austin.