Headquarters: Houston
Revenue: $169.5 billion
Profit: $4.12 billion
2012 rank: N/A
ConocoPhillips split its exploration arm and refining arm into two separate companies last year, with its refineries, chemical operations, and energy transportation, marketing, and storage divisions operated by the new company, Phillips 66. The name is the well-known brand of Phillips Petroleum, founded in 1917 and which merged with Conoco in 2002. In the Fortune 500 ranking, Phillips 66 took the place of ConocoPhillips.
