Tavaputs

With a market capitalization of $406.3 billion, ExxonMobil Corp. once again led the world’s top oil and natural gas producers in 2011, according to the annual ranking PFC Energy 50. Irving, TX-based ExxonMobil has led all of the world’s producers except in 2007 and 2009, when PetroChina Co. Ltd. was the No. 1 producer, PFC noted. In the latest ranking PetroChina is in second place with a market valuation of $276.6 billion. Six supermajors posted the best group performance among companies returning to this year’s list: ExxonMobil, Royal Dutch Shell plc, Chevron Corp., BP plc, Total SA and ConocoPhillips increased their combined market capitalization 8% in 2011 to $1.2 trillion. Chevron, in fourth place with a market capitalization of nearly $212 billion, increased its valuation by 15% from $183.6 billion, which was the largest percentage increase of any returning company. Four midstream and pipeline companies made the list: Enterprise Products Partners LLC in the 25th spot; TransCanada Corp., 37th; Enbridge Inc., 40th; and Kinder Morgan Inc., 41st.