Energy earnings week arrives: Refining giant Marathon Petroleum (MPC.US) doubling profit is just the opening act, political criticism is poised to strike

Zhitong Finance APP notes that the coming week is crucial for energy investors. ExxonMobil (XOM.US), Chevron (CVX.US), Marathon Petroleum (MPC.US), and ConocoPhillips (COP.US) will successively release their earnings reports.