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New
accumulation in the Santos Basin Pre-Salt
Rio
de Janeiro, September 14 2009 �
PETR�LEO BRASILEIRO S/A � PETROBRAS announces a new discover in the Santos Basin pre-salt BM-S-9 concession area,
in ultra-deep waters.
The well 4-SPS-66C (4-BRSA-723C), know as Abar� Oeste, proved the
presence of oil and natural gas. It is located in the evaluation area of
1-SPS-50 (Carioca), some 290
km off the coast of the State of S�o Paulo (see the
figure below), in 2,163
meters of water. This is the fourth well drilled in
block BM-S-9 and the existence of hydrocarbons was proved in all of them.
The Block BM-S-9 is
composed of two evaluation areas: the area of well 1-BRSA-594-SPS (1-SPS-55),
known as Guar�, and the area of well 1-BRSA-491-SPS
(1-SPS-50), know as Carioca. The discovery was proved via oil, natural gas
and carbon gas content sampling via a cable test carried out in reservoirs
located at depth of some 5150
m and analyses are being carried out with the samples
that were recovered.
The Consortium, formed
by Petrobras (45% - Operator), BG Group (30%), and Repsol (25%), will give continuity to the activities and
investments that are required to assess this area pursuant to the Evaluation
Plan approved by the National Petroleum Agency (ANP).

Sincerely,
Investor Relations
www.petrobras.com.br/ri/english
Contacts: PETR�LEO BRASILEIRO S. A. - PETROBRAS
Investor Relations Department I E-mail: petroinvest@petrobras.com.br /
acionistas@petrobras.com.br
Av. Rep�blica do Chile,
65 � 22nd floor - 20031-912 - Rio de
Janeiro, RJ I Tel.: 55 (21) 3224-1510 / 9947

This document may
contain forecasts that merely reflect the expectations of the Company�s
management. Such terms as �anticipate�, �believe�, �expect�, �forecast�,
�intend�, �plan�, �project�, �seek�, �should�, along with similar or
analogous expressions, are used to identify such forecasts. These predictions
evidently involve risks and uncertainties, whether foreseen or not by the
Company. Therefore, the future results of operations may differ from current
expectations, and readers must not base their expectations exclusively on the
information presented herein.
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