This excerpt taken from the PBR 6-K filed Nov 12, 2008.
14.4 Credit facility agreements for financing exports
On April 4 and 11, 2008, Petrobras contracted credit facilities of R$ 400.000 thousand and R$ 1.600.000 thousand with Banco do Brasil. The transaction was guaranteed by Export Credit Notes (NCE), the purpose of which is to increase Petrobrass exports of oil and oil products. It was negotiated with the following terms: