Forbes contributors publish independent expert analyses and insights. Robert Rapier is a chemical engineer covering the energy sector. CARSON, CALIFORNIA - MARCH 10: In an aerial view, Marathon ...
Chevron is now importing 250,000 barrels of crude per day from Venezuela.
Add Yahoo as a preferred source to see more of our stories on Google. Russia's Kirishi oil refinery, struck by drones on 26 March, may resume operations at three of its four main units within a month.
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