Merged companies climb OGJ100 lists of production, reserves leaders

Supermajors - the products of major oil and gas company mergers - are showing increased dominance in terms of worldwide crude oil production, according to Oil & Gas Journal's latest look at the top 100 oil and gas companies outside the US. State-owned companies continue to head the lists of production and reserve leaders, however.The OGJ100 list of major non-US companies allows comparison of size and performance of prominent companies throughout the world. The companies are listed by region according to the location of corporate headquarters rather than ranked by assets or revenues, as many do not report financial data. Click here to enlarge imageThe survey of oil and gas producers l...

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