OREANDA-NEWS. June 30, 2011. HRT Participaзхes em Petrуleo S.A. (the “Company” or “HRT”) (BM&FBOVESPA: HRTP3, TSX-V: HRP), announces the spud-in, on June 29 at 3:00 p.m, by its subsidiary HRT O&G Exploraзгo e Produзгo de Petrуleo Ltda. “HRT O&G”, of its third exploration well, location 1-HRT-168/01-AM, codified by the National Petroleum, Natural Gas and Biofuel Agency - ANP as 1-HRT-3-AM.

This third well is approximately 7.5 km distant from the Municipal District of Carauarн, in the State of Amazonas, and is being drilled by the QG IX drill of Queiroz Galvгo, and is forecast to reach a final depth of approximately 2,620 meters.

This well is being drilled in the contingent resource structure called Gaviгo (GAV), located in the Block SOL-T-168, in the Sedimentary Basin of Solimхes, in order to test the Eastern extension of the structural high already tested in the past by well 1-GAV-01-AM. This previous test revealed the presence of gas in the Juruб Formation. Based on the results of previous wells, HRT expects to test in this well for the potential of gas production from the Lower Juruб Formation reservoirs (Carboniferous Age), as well as evaluate if the Devonian Age reservoirs have potential for hydrocarbons production.

HRT O&G holds 55% participating interest in 21 exploration blocks in the Sedimentary Basin of Solimхes, covering an area of approximately 48.5 thousand km2, where 52 prospects have been mapped and certified and 11 discoveries were classified as contingent resources.

It is expected that well 1-HRT-194/01-AM be spudded by July. This well will be drilled into the structure mapped and classified as contingent resource called Igarapй Maria (IMA), located South of the Sudoeste de Urucu Field (SUC).