 | China National Offshore Oil Corporation's (CNOOC) oil rig in China's Bohai Sea is seen in this October 21, 2003 file photo. China's CNOOC Ltd. on Aug 2 2005 abandoned its $18.5 billion offer to acquire Unocal Corp. in the face of strident political opposition, clearing the way for the U.S. oil and gas producer to conclude a deal with larger U.S. rival Chevron Corp. click to open  |
 | China National Offshore Oil Corporation's (CNOOC) oil rig in China's Bohai Sea is seen in this October 24, 2003 file photo. China's CNOOC Ltd. on Aug 2 2005 abandoned its $18.5 billion offer to acquire Unocal Corp. in the face of strident political opposition, clearing the way for the U.S. oil and gas producer to conclude a deal with larger U.S. rival Chevron Corp. click to open  |
 | China National Offshore Oil Corporation's (CNOOC) oil rigs is seen in China's Liaodong Bay of the Bohai sea February 3, 2005. China's CNOOC Ltd. said on July 2 its request to the U.S. government to review its plan to merge with oil and gas producer Unocal Corp. was voluntary and aimed at clearing up doubts about the deal. click to open  |
 | China National Offshore Oil Corporation's (CNOOC) SZ36-1 central platform in the Bohai Bay of China is seen October 3, 2004. Oil prices struck a record $60 a barrel on Thursday as worries that strong demand growth will strain global production capacity drew in a flurry of speculative fund buying. click to open  |
 | CNOOC drilling platform. An audacious $18.5 billion bid by Chinese oil company CNOOC to buy Unocal Corp. in June 2005 is fast running into political hurdles that analysts say could easily sway shareholders in the U.S. oil producer against supporting the deal. click to open  |
 | China National Offshore Oil Corporation's (CNOOC) oil rig in China's South Sea is seen in this photograph taken February 2, 2004. Chinese state-run oil firm CNOOC Ltd. said on Thursday it is confident its $18.5 billion cash offer for U.S. producer Unocal will prevail in the takeover battle with Chevron Corp. click to open  |
 | CNOOC drilling platform. An audacious $18.5 billion bid by Chinese oil company CNOOC to buy Unocal Corp. in June 2005 is fast running into political hurdles that analysts say could easily sway shareholders in the U.S. oil producer against supporting the deal. click to open  |