GRAN TIERRA ENERGY ANNOUNCES OIL DISCOVERY WITH 2,324 BOPD TEST RATE IN ARGENTINA

Exploration Success Adds Near-Term Production and Cash Flow to Argentine Business Unit; Increases Exploration Potential of Acreage
CALGARY, Alberta, September 17, 2008, Gran Tierra Energy Inc. (AMEX: GTE; TSX: GTE), a company focused on oil exploration and production in South America, today announced it has finished drilling and testing the Proa.x-1 exploration well in the SurubĂ­ [...]

Gran Tierra Energy Successfully Drills Costayaco-4 in Colombia, Completion and Testing Operations Initiated June 13, 2008

CALGARY, Alberta, June 13, 2008, Gran Tierra Energy Inc. (AMEX: GTE; TSX: GTE), a company focused on oil exploration and production in South America, today announced that it had completed drilling Costayaco-4, a new well drilled in the Costayaco Field in Colombia. Gran Tierra Energy also updated progress being made with additional drilling activities and [...]