PentaNova, via affiliate Alianza Petrolera, announces the finalisation of negotiations with YPF to move to a 50% Interest in the Llancanelo heavy oil field/blocks, total 27 sq km in the N. NeuquÃ©n Basin. This comprises the takeover of 10% from Roch and 11% from YPF. Farm-in terms include up to 6 months for the partners to complete a joint programme to complete the full devt plan on the block, with the aim of brining the block into a large heavy oil project. Mendoza authority approval is now awaited for the move to complete. www.pentanovaenergy.com.  
Alianza Petrolera Argentina has agreed to acquire a 10% stake in the Llancanelo block from Roch (->0%, YPF 50% op, Patagonia Oil 11%, PentaNova 29%).