I guess you’ve never heard of the Explorer pipeline which has now come back online transporting from Houston to Dallas (but not onward TO Tulsa (you do know the difference between ‘to’ and ‘from’ don’t you?)
You can find out more about Explorer’s pipeline FROM Houston TO the Midwest through DFW here: http://www.expl.com/
Meanwhile, you can compare the capacities of Valero’s Ardmore refinery (85,000 barrels per day) with its refinery in Houston (380,000 bpd) or Port Arthur (290,000)
You forgot to include the Phillips refinery (and another that slips my mind currently) to your capacity numbers generated from OK...