Gran Tierra Energy is one of the most successful independent oil and gas companies to have entered Colombia. Average production has grown from approximately 368 barrels of oil per day NAR in 2006 to approximately 24,000 barrels of oil per day gross or 18,000 barrels of oil per day NAR in 2014. This growth has been driven by exploration and subsequent development success, including the discovery of the Costayaco field, one of the largest light oil discoveries in Colombia in the last decade. Today, Gran Tierra Energy holds an interest in 23 Blocks in Colombia. Gran Tierra Energy is the largest producer, the largest reserve holder and the largest exploration landholder in the Putumayo Basin of southern Colombia.