This excerpt taken from the PBR 20-F filed May 22, 2009.
Libya since March 2005, when we acquired exploratory and shared production rights for Area 18, consisting of four blocks offshore northeastern Libya. We are the operator of the consortium exploring the block, holding a 70% share. The production sharing agreement mandates a five-year exploration stage and 25 years of production rights shared with the Libyan National Oil Company.
In 2006, we acquired a 17% working interest in the offshore Zambezi Delta Block in