If you know what an energy company like EOG Resources (NYSE:EOG) looked like about two years ago, you'd get an idea of what Devon Energy (NYSE:DVN) looks like today, and where it is headed. The company has sold off a lot of its international resources to focus much more strongly on the U.S., and is now making a major diversification move into oil. In this video, Motley Fool energy analyst Joel South tells us just how big of an oil move this natural gas company is making, and why he thinks it's a good fit for them.