Marathon Oil is an independent E&P company, based in Houston. Building on a rich history, with pride in our past achievements, our strategy is resolutely focused on U.S. unconventional resource plays. We're active in the Eagle Ford, Bakken, STACK/SCOOP and Permian. Marathon Petroleum Corporation is a leading, integrated, downstream energy company headquartered in Findlay, Ohio. The company operates the nation’s largest refining system with more than 3 million barrels per day of crude oil capacity across 16 refineries. Marathon Petroleum Corporation Overview This profile for Marathon Petroleum Corporation is located in Findlay, OH. Marathon Petroleum Corporation industry is listed as Crude Oil Refining & Whol Petroleum Products. Learn More D&B Reports Available for Marathon Petroleum Corporation