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. The BMO Capital Markets 10th AnnualUnconventional Resource ConferenceInvestor PresentationJanuary 8, 2012 2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking…

1. October 2012Investor PresentationNYSE: PVA 2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking StatementsCertain statements contained herein…

1. The BMO Capital Markets 10th AnnualUnconventional Resource ConferenceInvestor PresentationJanuary 8, 2012 2. Forward-Looking Statements, Oil and Gas Reserves and DefinitionsForward-Looking…

1. 0Investor PresentationIPAA OGIS New YorkApril 2013NYSE: PVA 2. 1Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking StatementsCertain…

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

1. Barclays CEO Energy‐Power ConferenceSeptember 4, 2012Investor PresentationNYSE: PVA 2. Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking…

1. Investor PresentationIPAA OGIS New YorkApril 2013NYSE: PVA0 2. Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking StatementsCertain…

1. EnerCom’s The Oil & Gas Conference® 17August 13‐14, 2012Investor PresentationNYSE: PVA 2. Forward‐Looking Statements, Oil and Gas Reserves and DefinitionsForward‐Looking…