Operations  :  Colombia  :  Middle Magdalena Valley

Sierra E&P Contract

• Participation – Rancho Hermoso S.A. (Canacol) 25.5%
                                                                        (Operator)
                            Benchmark 25.5%
                            TC Oil 24.5%
                            Winchester 24.5%
• Area – 32,173 acres (gross); 8,204 acres (net)
• Mean EUR Resource Potential Unrisked: 8mmbo