President & CEO
Greg has been working in the oil and gas industry since 1983 after graduating from Oklahoma State University with a bachelor’s degree in Geology and minors in Business and Math. He began his career working for a local independent oil & gas company located in Tulsa, OK.
After 3 years of gaining hands on experience in the industry he decided to venture out and try to make it on his own. His knowledge and strong work ethic helped him succeed in the starting of his own company. It was 1986 when Greg incorporated Casillas Petroleum Corp. and it has been an active independent operator since then.
He is currently on the Board of Advisors for the Oklahoma State University’s Geology department. Greg is devoted to promoting education and building a better community for his fellow Oklahomans.