Garrett Gremillion
Oakstone Resources LLC
Oakstone focuses on offering long-life oil and gas mineral assets with strong return profiles for private investors. The company identifies and acquires high-quality assets while navigating complex hydrocarbon investments.
Delivering sustainable, high-return oil and gas mineral investments.
Ethics in Reserve Forecasting & Asset Evaluation | Garrett Gremillion, P.E. | PHDwin Week 2025
Featured Lecture
Ethics in Reserve Forecasting and Valuation
Date & Time
September 11, 2025
10:00 AM - 11:00 AM CDT
Duration
60 minutes
Including Q&A
Location
Live Streaming
Learn more about Garrett Gremillion & Oakstone Resource
Garrett Gremillion is a seasoned professional with extensive experience in the oil and gas industry. He is currently a co-founder and Senior Vice President of Oakstone Resources LLC, a company focused on long-life oil and gas mineral assets. Over his career, Garrett has held leadership roles in corporate planning, reserves management, and engineering at Black Stone Minerals Company L.P. for over 16 years. He also has a background in field engineering with Baker Hughes INTEQ and commercial banking at Whitney National Bank. Garrett holds an MBA from the University of New Orleans and a degree in Geological Engineering from the University of Mississippi.
Oakstone Resources LLC | Co-founder & Senior Vice President, Subsurface & Technical
2025 – Present
Past Experience
Black Stone Minerals Company L.P. | Vice President, Corporate Planning & Reserves
2024
Black Stone Minerals Company L.P. | Vice President, Engineering & Geology
2021 – 2024
Black Stone Minerals Company L.P. | Director, Engineering
2013 – 2021
Baker Hughes INTEQ | LWD Field Engineer
2007 – 2008
Whitney National Bank | Commercial Banking Officer
2004 – 2007
Master of Business Administration (MBA), Concentration in Finance | University of New Orleans
Graduated 2004
Bachelor of Science in Geological Engineering | University of Mississippi
Graduated 2002
Oakstone Resources LLC is a co-founded oil and gas mineral investment firm focused on identifying and acquiring high-quality, long-life assets. The company provides family offices and private investors with stable, high-return opportunities in the hydrocarbon sector, specializing in sustainable growth and effective asset management. With a focus on transparency and ethical practices, Oakstone navigates the complexities of the mineral market, offering valuable insights into the investment space.
Connect With Garrett Gremillion
Comited to Client Innovation
At Oakstone Resources LLC, we prioritize delivering innovative solutions that meet the unique needs of our clients. By leveraging industry expertise and cutting-edge technologies, we are dedicated to identifying and securing high-return mineral assets that drive sustainable growth. Our commitment to innovation allows us to provide personalized investment strategies that help clients navigate the complexities of the oil and gas market, ensuring their success in an ever-evolving industry.