From the following article:
http://abcnews.go.com/International/us-led-planes-strike-isis-oil-facilities-syria/story?id=25739334
Centcom said the refineries produce an estimated 300 to 500 barrels of refined oil a day that generate as much as $2 million a day for ISIS.
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I call BS. If this is the source of the the $2 million a day, it was more likely a tenth of that amount. Math ain’t that hard; they are not getting $500/barrel.
Some of the earlier articles from a few months back led me to believe that most of their oil income came from a protection racket they were running on various Syrian refineries.
(nice little refinery you got there,
be a shame if something were to happen to it)
Notice that the noun, “refineries” is used in the plural. Anyone of them produces between 300 and 500 barrels per day. With oil at $100/barrel that’s about $40,000 bucks per unit. With 50 such units they could easily produce $2,000,000 a day. Few units, fewer dollars.