Petrobras (PBR)

1.

The term "enforceable" and its cognates as used in this opinion means that the obligations assumed by the Company under the Documents and the Notes are of a type which the courts of the Cayman Islands enforce. This does not mean that those obligations will necessarily be enforced in all circumstances in accordance with their terms. In particular:

(a)

enforcement of obligations and the priority of obligations may be limited by bankruptcy, insolvency, liquidation, reorganisation, readjustment of debts or moratorium and other laws of general application relating to or affecting the rights of creditors or by prescription or lapse of time;

(b)

enforcement may be limited by general principles of equity and, in particular, the availability of certain equitable remedies such as injunction or specific performance of an obligation may be limited where the court considers damages to be an adequate remedy;

(c)

claims may become barred under statutes of limitation or may be or become subject to defences of set-off, counterclaim, estoppel and similar defences;

(d)

where obligations are to be performed in a jurisdiction outside the Cayman Islands, they may not be enforceable in the Cayman Islands to the extent that performance would be illegal under the laws of, or contrary to the public policy of, that jurisdiction;

(e)

a judgment of a court of the Cayman Islands may be required to be made in Cayman Islands dollars;

(f)

to the extent that any provision of the Documents or the Notes is adjudicated to be penal in nature, it will not be enforceable in the courts of the Cayman Islands; in particular, the enforceability of any provision of the Documents which imposes additional obligations in the event of any breach or default, or of payment or prepayment being made other than on an agreed date, may be limited to the extent that it is subsequently adjudicated to be penal in nature and not an attempt to make a reasonable pre-estimate of loss;

(g)

to the extent that the performance of any obligation arising under the Documents or the Notes would be fraudulent or contrary to public policy, it will not be enforceable in the courts of the Cayman Islands;

(h)

a Cayman Islands court will not necessarily award costs in litigation in accordance with contractual provisions in this regard; and

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(i)

the effectiveness of terms in the Documents or the Notes excusing any party from a liability or duty otherwise owed or indemnifying that party from the consequences of incurring such liability or breaching such duty shall be construed in accordance with, and shall be limited by, applicable law, including generally applicable rules and principles of common law and equity.

2.

A certificate, determination, calculation or designation of any party to the Documents as to any matter provided therein might be held by a Cayman Islands court not to be conclusive, final and binding, notwithstanding any provision to that effect therein contained, for example if it could be shown to have an unreasonable, arbitrary or improper basis or in the event of manifest error.

3.

If any provision of the Documents or the Notes is held to be illegal, invalid or unenforceable, severance of such provision from the remaining provisions will be subject to the discretion of the Cayman Islands courts notwithstanding any express provisions in this regard.

4.

In principle, a person who claims to be entitled pursuant to a contract to recover the legal fees and expenses incurred in enforcing that contract shall be entitled to judgment for the amount of legal fees and expenses found due under the contract and such amount shall not be subject to taxation pursuant to the applicable rule of court.

5.

We express no opinion upon the effectiveness of any clause of the Documents providing that the terms of such Document may only be amended in writing.

6.

The obligations of the Company may be subject to restrictions pursuant to United Nations sanctions and/or measures adopted by the European Union Council for Common Foreign & Security Policy extended to the Cayman Islands by the Order of Her Majesty in Council.

7.

To maintain the Company in good standing under the Companies Law (as amended), all annual filing fees must have been paid and all returns made to the Registrar of Companies.