re: ‘Drill, Baby, Drill!' Will Secure American Prosperity For The Twenty First Century

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This but the majority of our aging refineries are set up for heavy crude. Shale oil is lighter and requires a cracker to process. Investment is needed to update the majority of our refineries.

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You know little about refining. A hydrocracker makes more diesel and less gasoline than a cat cracker does. The problem is in the crude unit where all the light ends flood the top of the main distillation column thus vapor locking it unless run at a lower capacity, around 30% less throughput. What some refiners have done is installed a condensate splitter for the "crude" oil to be processed first, where light ends (entrained gases) are removed first. Using such light crude (technically speaking it's actually condensate not crude oil but congress changed its legal name in the 1970's) causes refineries go bankrupt after being forced to operate with around 30-40% loss in capacity.

There are actually 7 brand new refineries designed and permitted for Texas specifically designed for West Texas Light. The main issue is demand and funding.

There are other products which refineries can make with a higher profit margin than gasoline and diesel.