OREANDA-NEWS. November 11, 2011. HRT Participacoes em Petroleo S.A. (“Company” or “HRT”) (BM&FBOVESPA: HRTP3, TSX-V: HRP), announces that its subsidiary HRT O&G Exploracao e Producao de Petroleo Ltda. ("HRT O&G") forwarded to the National Agency of Petroleum, Natural Gas and Biofuels (Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis - ANP), Notice of Discovery of oil and gas in the well 1-HRT-4-AM.

Based on logging data, hydrocarbon shows in cuttings and gas detectors, two gas- bearing intervals, with net pay of 11.2 meters and five oil-bearing intervals, with net pay of 41,2 meters, were observed in the Jurua Formation. All zones indicate good porosity.

The well was spud in August and reached a final depth of 2,806 meters, reaching the crystalline basement. The well is presently under further evaluation and in future will be cased in order to perform formation tests, with a view to characterizing the production potential of the reservoirs. The well is located in the Municipal District of Coari, in the State of Amazonas, and it was drilled by the Tuscany drilling rig - TUS-116.

HRT holds a 55% interest in 21 exploration blocks in the Solimoes Sedimentary Basin, covering an area of around 48.5 km2, where 52 prospects were mapped and estimated, and 11 discoveries were qualified as contingent resources.