Interestingly, the world's 5 biggest oil and gas companies (in terms of revenue) are from China and Europe, with U.S.' giants ExxonMobil (NYSE:XOM), Chevron Corp. (NYSE:CVX), and Marathon Oil (NYSE:MRO) coming in lower at #6, #8, and #9, respectively.
The 5 Most Influential Oil Companies In The World based on revenue:- #1. China Petroleum & Chemical Corp. (Sinopec)