Angola

Marathon has interests in two blocks offshore Angola, Block 31 and Block 32. The Company is encouraged by its successes in an exploration trend where numerous discoveries have already been made nearby and sees Angola as a future core area.

Block 31
On Block 31, Marathon has announced 15 successful exploration wells since late 2001. Discoveries include Plutao, Saturno, Marté, Venus, Palas, Ceres, Juno, Astraea, Hebe, Urano, Terra, Titania, Miranda, Cordelia and one unnamed discovery.

Marathon has a 10 percent interest in Block 31. The Company's partners in the block are BP (26.67 percent and operator), ExxonMobil (25 percent), Sonangol (20 percent), Statoil (13.33 percent) and Total Exploration (5 percent).

Block 32
On Block 32, Marathon has announced 10 successful exploration wells: Gindungo, Canela, Gengibre, Mostarda, Salsa, Manjericao, Caril, Louro, Cominhos and Colorau.

Marathon has a 30 percent interest in Block 32. The remaining interests are held by operator Total Exploration (30 percent), Sonangol (20 percent), ExxonMobil (15 percent) and Petrogal (5 percent).