Usually the gas station owners make somewhat 11 percents off the fuel back in $2-3 price range, it can't be that much more now. Most of their profits are from the side businesses like auto repair, vending, fast food, etc.
Refinery also doesn't make too much, slightly more than gas station but not too much either.
Most of the profit is exploration and drilling. That's why when people pull out graphs that said gas company only make 11% they are talking about gas station or refinery, but forgot to mention that the drilling and pumping because they assume it is made from an entirely different business. They are assuming that they are buying fuel from OPEC (but with the help of big oil they are also making a fraction) but a lot of them are also from non OPEC production (off shore platform, Alaska, Canada, etc), that's where they make the most $ from.