5 ms·US produces mainly WTI but refineries are set up to process mainly Brent.by prostoalex 5y agoUS produces mainly WTI but refineries are set up to process mainly Brent.Fatnino 5y agoBetter question is why? If we get WTI out of the ground here, why don't we have WTI refineries here too?anamax 5y agoIt is almost impossible to build a new refinery in the US and difficult (at best) to significantly modify the ones that we have.