This excerpt taken from the PBR 6-K filed Nov 19, 2009.
The spread between the average domestic oil sale/transfer price and the average Brent price fell from US$ 13.51/bbl in the 9M-2008 to US$ 8.67/bbl in the 9M-2009.
The reduction was due to the recognition, in September 2009, of the extraordinary expense with special participation (R$ 2,048 million).
This factor was partially offset by the increase in international oil prices.
The spread between the average domestic oil sale/transfer price and the average Brent price fell from US$ 10.11/bbl in the 2Q-2009 to US$ 4.27/bbl in the 3Q-2009, reflecting the international market appreciation of "heavy versus light crudes.
The year-on-year improvement in the Supply result was due to lower oil acquisition/transfer costs and reduced imported oil product costs, reflecting the new level of international oil prices.
These effects were partially offset by the reduction in average oil product prices due to lower export prices, and, in Brazil, to the reduced price of those oil products pegged to international prices.
This excerpt taken from the PBR 6-K filed Aug 18, 2009.
The international refining cost fell by 7% due to the higher volume of processed crude in the Pasadena refinery (USA) following the scheduled stoppage in the 1Q-2008, together with the inclusion of the Japanese refinery as of April 2008, whose refining costs are lower than the international average.
The quarter-over-quarter upturn was chiefly due to reduced production in Japan due to the scheduled stoppage in May/2009 and maintenance of the alkylation unit in the USA.