Much of Venezuela’s oil is very heavy crude that's high in sulfur and metals and has a low API gravity, which makes it difficult and expensive to refine.
You need a lot of expensive catalysts to get rid of the sulfur.
Much of Venezuela’s oil is very heavy crude that's high in sulfur and metals and has a low API gravity, which makes it difficult and expensive to refine.
You need a lot of expensive catalysts to get rid of the sulfur.