Sanguine Gas Exploration is a Tulsa based, family-run, independent oil and gas company led by Randy Nelson, the son of Sanguine’s founder, Don Nelson, and the grandson of Herman Kaiser, the founder of Kaiser-Francis Oil and Gas. Don Nelson was Exploration Manager at Kaiser-Francis for 15 years prior to establishing Sanguine in 1977. Randy started at Sanguine as a summer intern in 1981 and joined the company permanently in 1991 after working as a commercial credit officer in the New York headquarters of Citibank and completing his MBA. Randy became President and sole owner of Sanguine in 2003.