This excerpt taken from the PBR 6-K filed Aug 19, 2005.
b) Goodwill / Discount balance
The discount recorded by PETROBRAS on the acquisition of BRs shares, in the amount of R$ 62.821 thousand, has been amortized as defined in the related appraisal report (10 years); the discount recorded by PETROBRAS on the acquisition of the share control of FAFEN Energia (80,20%), in the amount of R$ 15.159 thousand, will be amortized over 25 years, as defined in the related appraisal report.
50% of the shares of TERMORIO, PETROBRAS calculated a discount in the amount of R$ 38.610 thousand that will only be amortized in accordance with CVM Instruction No. 247/96 upon sale of the investment.
Upon acquisition of TERMOCEARÁ Ltda., a R$ 104.212 thousand goodwill was determined on expected future results to be repaid in a 10 years' time.