432-686-1100

600 N. Marienfield, Suite 1000
Midland, TX 79701

Email: contact@boldenergy.com

Bold Energy Managers


Joseph L. Castillo, President

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Mr. Castillo began his career in 1983 as a field engineer with Schlumberger in the Anadarko Basin.  He served 10 years in engineering and management positions in Oklahoma, Texas, Aberdeen, and Moscow.  In 1993 Mr. Castillo left Schlumberger to partner with former Tenneco engineers to form Sierra Engineering, a drilling-completion consulting firm.  Mr. Castillo and his partners grew the firm into one of the largest petroleum engineering consulting firms in the U.S.  In 2005 Mr. Castillo left Sierra Engineering to found Bold Energy I which was sold to Oxy USA in May, 2008.  He formed Bold Energy II in June 2008 which will conclude in 2013.  Mr. Castillo formed Bold Energy III in April 2013 with a staffing and capitalization level targeted at assembling and executing horizontal projects in West Texas and SE New Mexico.  Mr. Castillo has a degree in Molecular Biophysics and Biochemistry from Yale University and a degree in Petroleum Engineering from New Mexico Institute of Mining and Technology.  He is a 30 year member of the SPE.


David Cox, Executive Vice President - Business Development

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Mr. Cox began his career in 1984 with Mobil where he progressed from Operations Engineer to Asset Manager, gaining experience in the GOM, Permian Basin and Rockies.  Following the Exxon merger, he joined Tom Brown Inc. as a reservoir team lead until the company’s sale to EnCana.  Mr. Cox joined Bold Energy I as VP of Engineering and as a founding partner.  Upon the sale of Bold I to Oxy in 2008, Mr. Cox served as founder and President of Storm Peak Energy, LLC where he led the company through the acquisition, development and divestment of producing properties in the Delaware Basin of West Texas.  Mr. Cox returns to Bold Energy III as a partner.  He holds a BS in Petroleum Engineering from the Colorado School of Mines and is a Registered Professional Engineer in the State of Texas.  He is a member of the Society of Petroleum Engineers, American Association of Petroleum Geologists and the Rocky Mountain Association of Geologists.


Peggy C. Worthington, CPL, Business Development Manager

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Ms. Worthington began her career in 1978 with Maynard Oil in Dallas, Texas.  She held company landman positions in the Dallas area for ten years.  Ms. Worthington worked as Land Director for ARCO Permian for over twelve years working primarily in the Permian Basin.  In 2000, she formed Sundial Resources with former ARCO employees.  After the sale of Sundial Resources, Ms. Worthington became the Division Land Manager for Samson Resources in Midland.  Ms. Worthington was a founding partner in both Bold I and Bold II, holding the title of Vice President of Land.  She continues her partnership with Bold Energy III as Business Relations Manager.  She holds a business degree from Arkansas State University.  Ms. Worthington has served on the executive committee of the AAPL and PBLA, and she is a member of the IPAA, PBPA, NMOGA, NMLA, PBLA and AAPL.  Awarded 2013 AAPL Landman of the Year.