Energy companies moved to cut production at U.S. Gulf Coast oil refineries on Monday after shutting half the area’s offshore crude oil output as back-to-back storms took aim at the coast. Tropical Storms Marco and Laura, a rare double-team assault on key U.S. oil regions, threaten to bring days of heavy rains and strong winds this week. Producers have shut more than 1 million barrels per day of Gulf Coast offshore oil production, 9% of the nation’s total output, facing a storm that is forecast to become a damaging Category 2 hurricane. Motiva Enterprises [MOTIV.UL] on Monday began preparations to idle its large Port Arthur, Texas, crude oil refinery, said people familiar with plant operations. Total SA ( TOTF.PA ) also reduced production at its refinery in the same city, according to people familiar with its operation. Motiva and Total spokespeople did not immediately reply to […]