Entrepreneur, Leader, Geologist.
Mark S. Kelldorf is the owner of Arkoma Companies. He founded Arkoma Basin Exploration, also an Arkoma Companies entity, in June of 1983. Mr. Kelldorf’s career as a geologist spans over 30 years and continues to include the evaluation and acquisition of producing minerals and royalties throughout Arkansas, Texas, Oklahoma, Louisiana, Kansas and North Dakota.
He began his career in the energy business at Regal Petroleum Corporation in Dallas, Texas in 1975. Mr. Kelldorf assisted in the generation of exploration prospects in the Arkoma Basin, Oklahoma and Midland Basin, West Texas. In 1978, Mr. Kelldorf took the position of Staff Exploration Geologist at R. L. Burns Corporation in Dallas, Texas. Gormco Exploration then hired Mr. Kelldorf in January of 1980 as Exploration Geologist. After one year with Gormco, Mr. Kelldorf became an independent geological consultant exclusively in Southeastern Oklahoma.
In 1985, he worked in conjunction with Stanford University Endowment, Austin College Endowment and Mercantile Bank Trust (J.P. Morgan Chase) forming a venture that collectively invested over 100+ million dollars in the acquisition of producing minerals and royalties in the Arkoma Basin of Southeastern Oklahoma and the Hugoton Field of Southwestern Kansas. From 1995 to the present, Arkoma Companies, led by Mr. Kelldorf, has independently invested and acquired for its own account producing minerals, royalties, leasehold and working interest throughout the domestic United States.
Mr. Kelldorf holds a Bachelor of Science in Geology from the University of Texas – Arlington, followed by graduate studies in Petroleum Geology from Southern Methodist University in Dallas, TX.