OREANDA-NEWS. November 15, 2011. HRT Participacoes em Petroleo S.A. (“Company” or “HRT”) (BM&FBOVESPA: HRTP3, TSX-V: HRP), announces the conclusion of the Formation Test of exploratory well 1-HRT-1-AM, located in Block SOL-T-170, in the Solimoes Sedimentary Basin.

Well 1-HRT-1-AM, whose drilling was concluded on September 20, 2011, revealed the existence of two gas-bearing reservoirs in the Jurua Formation of Carboniferous age and three oil-bearing reservoirs of the Uere Formation, Devonian in age.

HRT tested, through casing, three intervals in Devonian reservoirs. Two of the intervals with gas and oil shows, were tested resulting in low permeability. These reservoirs with total net pay of 24 meters may be stimulated by fracturing to improve their production capacity as part of a discovery assessment plan to be submitted to the National Agency of Petroleum, Natural Gas and Biofuels (Agencia Nacional do Petroleo, Gas Natural e Biocombustfveis - ANP). The tested reservoir corresponding to the oil-bearing interval in the well 1-NSM-1-AM, was found in a structural position, 11 meters lower and below the oil-water contact.

The two gas-bearing intervals identified in the Jurua Formation reservoirs, with total net pay of 33 meters, were not tested and will be part of the discovery assessment plan.

Well 1-HRT-1-AM fulfilled the Minimum Exploratory commitment with ANP, confirmed the continuity of the Jurua Formation gas reservoirs, and allowed the identification of thick Devonian age reservoirs with the presence of oil and gas.

Drilling rig "Tuscany 115" will now be mobilized to Location 1-HRT-170/06-AM, in the same block, with the objective to test oil and gas potential of the reservoirs in the Jurua and Uere formations.

The Company's subsidiary, HRT O&G Exploragao e Produgao de Petroleo Ltda., 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.