List of largest oil and gas companies by revenue

Total revenue of oil and gas companies is listed in billions of U.S. dollars. Total revenue is usually self-reported by the company, and often reported by neutral, unbiased, reliable publications. Reported data may be subsequently revised or restated due to a wide range of issues such as exchange rates, contract settlements, or mid-year discontinuation of products or services. Fiscal years are for January 1 to December 31, except where noted. Empty cells indicate that no data for that year has been reported yet.

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