While oil-and-gas producers are getting hammered by the low commodity price for crude oil, refiners like Valero Energy Corp. are cashing in on the cheap oil to manufacture refined products like gasoline and diesel. San Antonio-based Valero reported net income from continuing operations of $1.4 billion, or $2.66 per share, in the second quarter, compared to $651 million, or $1.22 per share, in the second quarter of 2014.