Forbes | Saudi Arabia Is Buying Up America's Oil Assets Forbes Saudi Arabia is quietly amassing quite a portfolio of American energy assets. State-owned Saudi Aramco is already co-owner, with Royal Dutch Shell , of Motiva, the largest U.S. refinery. Under an already signed agreement, in April 2017, Aramco will ... Stalling oil market puts onus back on Saudi Arabia Saudi Arabia might play hardball with OPEC - here's why Reasons for Saudi Arabia to resist oil deal in Algeria |