Chevron is one of the largest energy companies on Earth, and it has an attractive yield. And there's still a long future ahead for oil.Chevron (CVX 0.36%) is offering investors a solid 4.4%-or-so dividend yield in the energy patch. That compares favorably to the average energy stock's 3.1% yield and even more favorably to the broader market's 1.2%. But a generous dividend payment is just one reason to like Chevron if you are looking for a high-yield energy stock to add to your portfolio.Here are three more ...