Petro Rio S.A. ADR fka HRPTY

[VanWilder]

Brazil IR Q&A



Dear Ricardo,


I am a shareholder of HRT since January 2011 and this is my first mail addressed to RI company so much that it would be answered.

My doubts are shared by several minority who exchange information about HRT in a small group of private investors and basically consist of the following:



1) If a company finds oil in commercially viable reservoir shallower the current hole (Baobab) the probe will continue drilling until Morumbe?

Yes, the program includes the well continued drilling until its ultimate goal.



2) If found oil Baobab TF will be held, and if not done, will be defined as the commercial viability of a possible breakthrough?

The program includes the well logging cable Full tests and identifying fluid and their characteristics as well as providing indications of productivity. The assessment of the commercial viability of a possible breakthrough volumes depend basically discovered x x operating costs operating costs (opex). The company believes that with the program outlined is perfectly possible to obtain the data needed for an initial evaluation and decision on how to proceed on the basis of any asset results.



3) If it is confirmed in commercial oil Baobab, the company will announce the results before the end of the drill or just make an official statement at the end of the whole process?

Only we expected the announcement of the results at the end of the pit.



4) The source rock found in Wingat has the potential to fill only the Baobab, since this is the one of the reservoirs that lies above the generator already confirmed?

The evaluation of the generating capacity of the rocks traversed the first well Wingat are indicative of an important event, with thick and regional distribution, able to fill the tanks established in the wells.

The data obtained so far are very positive about the generators, including generators regarding fluids because they are within the oil window. The range of the source rock Wingat is fairly thick, laterally and can feed the reservoirs stratigraphically underlying (Murombe) through small failures.



5) The probability Murombe oil is less than Baobab since the latter already have the most difficult-to prove the source rock - still needs to be confirmed if Murombe?

No. HRT data reinforce the possibility to load the shells called Murombe. The distance Baobae to the generator is about one thousand meters. The probabilities of each prospectus also take into account other factors.



6) What is the probability of success estimated for the reservoir deeper prospectus (Sivaradi)? Note: this information, unlike the other prospects, not in the institutional presentation published by the company in June.

Due to the depth of these reservoirs, we prefer not to disclose probability.



7) When will concretely defined monetization of gas already found in Solimões? There is a possibility gas found not to be commercially viable?

We plan to complete the first phase of the project with Petrobras and Rosneft in julho/13 and dissemination of results in agosto/13 if the findings are approved by 3 parts. Yes, the gas may not be commercially viable and this is the purpose of the study, seek study alternatives technically and economically feasible to produce gas in the region.