Notice to the market - Monitoring of Well Drilling in Exploratory Blocks located in Solimões Sedimentary Basin

RIO DE JANEIRO, Sept. 23, 2011 /CNW/ - HRT Participações em Petróleo S.A. ("Company" or "HRT") (BM&FBOVESPA: HRTP3) (TSXV: HRP), continuing the process of disclosing the progress of the well drilling in the areas under concession, announces the status of operations with position on today's date at 3:00pm.

Well 1-HRT-1-AM

According to the Relevant Fact ( disclosed on September 21, 2011, five crude oil intervals were identified on aeolian sandstone rocks which belong to the Marimari Group (Devonian age), in addition to three gas intervals, two of which were found in the Juruá Formation rocks and one in the Marimari Group's reservoirs.

The well is under assessment with achievement of electric logging and sampling. Based on the results to be obtained, the well will be cased to allow the performance of formation tests aimed at characterizing the types of fluids existing and obtaining an estimate of the potential production of the reservoirs.

Well 1-HRT-2-AM

Current depth: 2,829m.

Current status: drilling the 3rd phase*.

Zone of interest forecast for depth between 3,060m and 3,500m.

Well 1-HRT-3-AM

Well 1-HRT-3-AM tested the geological structures adjoining the structure already drilled by well 1-GAV-01-AM, which detected the presence of gas in the Juruá Formation.

* 3rd Phase: Drilling, logging and running the 95/8" intermediary casing.

During the drilling, evidences of gas were detected in three geological intervals, and liquid hydrocarbon evidences were found in the deeper intervals of the well. It should be noted that, during the logging operation, the presence of crude oil was detected in the drilling mud. This finding confirms the HRT's geological model, according to which there is a greater potential for liquid hydrocarbons in deep horizons.

The well is being cased with a 7" liner, with a shoe on the hole bottom and top at around 100 meters above the 95/8" casing shoe, located at a 2,375 meters depth.

Considering the deadline of the commitments of the Minimum Exploratory Program (Programa Exploratório Mínimo - "PEM") signed with the National Agency of Petroleum, Natural Gas and Biofuels (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis - ANP), HRT decided not to carry out the assessment through formation tests of well 1-HRT-3-AM at this time. This well, and the remaining hydrocarbon accumulations of Block SOL-T-168 (1-CI-1-AM, 1-MR-1-AM and 1-IP-1-AM), will be part of a future assessment plan.

Upon conclusion of the running of the casing and its cementing in the well, rig QG IX will be transferred to site 1-HRT-1-192, in Block SOL-T-192, located at approximately 65 km southwest from well 1-HRT-3-AM.

Well 1-HRT-4-AM

Current depth: 1,675m.

Current status: drilling the 3rd phase*.

Zone of interest forecast for depth between 2,360m and 2,700m.

To find out more on each well, click on the links below:



* 3rd Phase: Drilling, logging and running the 95/8" intermediary casing.

For further information, contact HRT`s Investor Relations Department.

Sedar Profile # 00031536

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

About HRT
HRT Participações 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 Serviços em Petróleo Ltda.), HRT O&G Exploração e Produção de Petróleo Ltda., HRT Netherlands B.V., HRT África Petróleo S.A., HRT América Inc., BN47 Serviços Aéreos Ltda., Ranger Participações Ltda. and UNX Energy Corp. The Company retains a 55% interest in 21 exploratory blocks in the Solimões Basin. HRT also operates ten exploratory blocks at the Namibian coast, where it retains interest in two of them, in the Walvis Sub-basin, and in other eight, in the Orange 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. Our commitment to the local communities is towards health conditions, security and quality of life. For more information, please visit the Company's website:

This news release contains forward-looking statements. All statements other than statements of historical fact contained in this news release are forwardlooking statements, including, without limitation, statements regarding our drilling and seismic plans, operating costs, acquisition of equipment, expectations of finding oil, the quality of oil we expect to produce and our other plans and objectives. Readers can identify many of these statements by looking for words such as "expects", "believe", "hope" and "will" and similar words or the negative thereof. Although management believes that the expectations represented in such forward-looking statements are reasonable, there can be no assurance that such expectations will prove to be correct. By their nature, forward-looking statements require us to make assumptions and, accordingly, forward looking statements are subject to inherent risks and uncertainties. We caution readers of this news release not to place undue reliance on our forward-looking statements because a number of factors may cause actual future circumstances, results, conditions, actions or events to differ materially from the plans, expectations, estimates or intentions expressed in the forward-looking statements and the assumptions underlying the forward-looking statements.

The following risk factors could affect our operations: the contingent resource and prospective resource evaluation reports involving a significant degree of uncertainty and being based on projections that may not prove to be accurate; inherent risks to the exploration and production of oil and natural gas; limited operating history as an oil and natural gas exploration and production company; drilling and other operational hazards; breakdown or failure of equipment or processes; contractor or operator errors; non-performance by third party contractors; labour disputes, disruptions or declines in productivity; increases in materials or labour costs; inability to attract sufficient labour; requirements for significant capital investment and maintenance expenses which HRT may not be able to finance; cost overruns and delays; exposure to fluctuations in currency and commodity prices; political and economic conditions in Namibia and Brazil; complex laws that can affect the cost, manner or feasibility of doing business; environmental, safety and health regulation which may become stricter in the future and lead to an increase in liabilities and capital expenditures, including indemnity and penalties for environmental damage; early termination, non-renewal and other similar provisions in concession contracts; and competition. We caution that this list of factors is not exhaustive and that, when relying on forward-looking statements to make decisions, investors and others should also carefully consider other uncertainties and potential events. The forward-looking statements herein are made based on the assumption that our plans and operations will not be affected by such risks, but that, if our plans and operations are affected by such risks, the forward-looking statements may become inaccurate.

The forward-looking statements contained herein are expressly qualified in their entirety by this cautionary statement. The forward-looking statements included in this news release are made as of the date of this news release. Except as required by applicable securities laws, we do not undertake to update such forward-looking statements.

SOURCE HRT Participações em Petróleo S.A.

For further information:

Marcio Rocha Mello - CEO and Investor Relations Officer
+55 21 2105-9700

Eliana Rodriques - IR Manager 
+55 21 2105-9745  

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HRT Participações em Petróleo S.A.

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