1. 41st Annual Howard Weil Energy ConferenceInvestor PresentationMarch 20, 2013NYSE: PVA 2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking…

1. Wells Fargo 2013 E&P ForumInvestor PresentationMarch 7, 2013NYSE: PVA 2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking StatementsCertain…

1. BMO Capital Markets2012 Unconventional Resource ConferenceInvestor PresentationJanuary 10, 2012NYSE: PVAEagle Ford Shale Drilling RigGonzales County, Texas…

1. BMO Capital Markets2012 Unconventional Resource ConferenceInvestor PresentationJanuary 10, 2012NYSE: PVAEagle Ford Shale Drilling RigGonzales County, Texas…

1.Investor PresentationNovember 2011NYSE: PVAEagle Ford Shale Drilling RigGonzales County, Texas2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking…

1. $400MM Eagle Ford Shale AcquisitionInvestor PresentationApril 3, 2013NYSE: PVA 2. Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking…

1. H.M Sultan Qaboos Bin Said Al-Said of OmanAge: 71Net Worth: £6+BillionHis wealth is  based upon Oilreserves, global properties,g l o b a l i n v e s t m e n t sa n d …

1. $400MM Eagle Ford Shale AcquisitionInvestor PresentationApril 3, 2013NYSE: PVA 2. Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking…

1 Conference Call / Webcast Almir Guilherme Barbassa CFO and Investor Relations Officer Results Announcement 2nd Quarter 2010 (IFRS) August 17th, 2010 2 DISCLAIMER FORWARD-LOOKING…