This excerpt taken from the PBR 20-F filed Jun 30, 2005.
During 2004, we signed two new contracts in Colombia, acquiring interests in the Tayrona (40%) and Villanueva (50%) Blocks. We drilled one wildcat well in Monicongo, which did not result in a commercially feasible discovery.
We have interests in seven exploration contracts and seven production contracts in Colombia. We are the operating company in 12 of these contracts. Under these contracts, we drilled a total of 42 wells, 33 of which were located in Guando.
As of December 31, 2004, our combined crude oil and natural gas proved reserves in Colombia were approximately 37 million of barrels of oil equivalent and our combined oil and gas production averaged 16.8 thousand barrels per day.