OREANDA-NEWS. December 13, 2011. HRT Participates em Petroleo S.A. (the "Company" or "HRT") (BM&FBOVESPA: HRTP3, TSX-V: HRP) announces that, the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (Agenda Nacional do Petroleo, Gas Natural e Biocombustiveis - ANP) ("ANP") approved, on December 9, 2011, the transfer of the concession rights and obligations from Petra Energia S.A. ("Petra") regarding the totality of a 45% participating interest to HRT O&G Exploragao e Produgao de Petroleo Ltda. ("HRT O&G") related to 21 blocks located in the Solimoes Sedimentary Basin.

HRT Participagoes holds one of the largest independent oil and gas exploration and production companies in Brazil. The HRT Group comprises eight main subsidiaries: IPEX (Integrated Petroleum Expertise Company Servigos em Petroleo Ltda.), HRT O&G Exploragao e Produgao de Petroleo Ltda., HRT Netherlands B.V., HRT Africa Petroleo S.A., HRT America Inc., Air Amazonia Servigos Aereos Ltda. and HRT Canada Inc.. The Company retains a 55% interest in 21 exploratory blocks in the Solimoes Basin. HRT also operates ten exploratory blocks off the Namibian coast: eight blocks in the Orange Sub-basin and two blocks in the Walvis Sub-basin. HRT's team includes PHDs and masters in geochemistry, geophysics, biology and engineering, most of them former employees of Petrobras and ANP (Brazil petroleum agency). HRT is committed to minimizing any possible environmental impacts in the sites where it acts.