This excerpt taken from the PBR 20-F filed Jun 30, 2005.
We have interests in four blocks in Nigeria and we are the operating company in one of them. In 2004, we drilled one successful well in Egina, operated by Total, and four in Agbami, operated by Chevron Texaco. The Agbami well is currently being developed and the Egina field is under appraising. We also were successful in drilling our first deepwater well outside Brazil, which set new depth records in Nigeria.
Our Angolan branch of our wholly-owned subsidiary, Petrobras International Braspetro B.V., has continued to perform as a non-operating partner in two licenses under petroleum sharing agreements. No exploratory drilling was carried out in Angola during 2004. As of December 31, 2004, our combined crude oil and natural gas proved reserves in Angola were approximately 12 million of barrels of oil equivalent and our oil production averaged 10.4 thousand barrels per day.
In 2004, we signed a joint production agreement with the Tanzania government and the state-owned oil company Tanzania Petroleum Development Corporation (TPDC). This agreement provides for the exploration of Block 5, which has an extension of 9,250 square kilometers and is located in the Mafia Basin at water depths of 300 to 3000 meters. The agreement will be in force for up to 11 years. In 2005, we will conduct geological studies to determine whether additional seismic acquisitions will occur.
On March 12, 2005, we signed an exploration and joint production agreement with Libyas state-owned National Oil Corporation (NOC). This agreement provides for the exploration of four blocks in Area 18, which has an extension of 10307 square kilometers and is located in the Mediterranean Sea at water depths of 200 to 700 meters. We own a 70% interest in a consortium with Oil Search Limited (OSL) and will be the operating company in the area. Under the agreement, the exploration phase will last five years and may be extended for 20 more years if discoveries are made. A total of US$21 million will be invested in the exploration phase and we will be required to drill a well and conduct seismic evaluations.