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Gran Tierra recently issued a press release on its reserves for year-end 2012. The good news is that the company’s Colombian oil reserves 2P (Proved and Probable) are up 34% over 2011. Proved (P1) reserves are up 22% and Probable (P2) are up 85%. The bad news is that Colombian 2P gas reserves are down 64% although Proved gas reserves are only down 35%. Gas now represents only 5% of the company’s Colombian 2P reserves. Argentina gas reserves have also declined but the growth in oil in Colombia, Argentina and Brazil is sufficient to push 1P reserves up 20% and 2P reserves 15% on a total company basis. The official long-form filing may not appear until the end of this month and the company gave no explanation of the decline in gas reserves in its press release.

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