Partex started its activities in Brazil when it was qualified by ANP (Agência Nacional do
Petróleo) as an onshore authorized operator in Brazil Round 3, in 2001.

Presently, Partex Oil and Gas Group participates in:

POTIGUAR
In the Potiguar basin, Partex has a 50% share and is the operator in the fields Colibri and
Cardial. The other shareholder is Petrobras.

Partex is presently operating the fields development plan, which are producing and exporting
to the nearby refinery.

SERGIPE – ALAGOAS
In the Sergipe – Alagoas basin, Partex has a 15% share in the offshore block BM – SEAL – 9,
in which Petrobras (the operator) has a 85% share.