Gran Tierra Energy Inc. is an energy company engaged in oil and gas acquisition, exploration, development and production. The Company focuses on onshore oil and gas properties in Colombia, and also own rights to oil and gas properties in Brazil and Peru. Its segments are Colombia, Peru and Brazil based on geographic organization. It operates principally in the Putumayo Basin in Colombia, and has properties in other basins, including the Catatumbo, Cauca, Llanos, Sinu-San Jacinto, Middle Magdalena and Lower Magdalena Basins. It has interests in over 30 blocks in Colombia and it is the operator on over 20 of these blocks. Its blocks and fields include Chaza-Costayaco and Moqueta Fields, Guayuyaco-Guayuyaco and Juanambu Fields, Garibay-Jilguero Field and over 11 Other Blocks. Blocks REC-T-129, REC-T-142, REC-T-155 and REC-T-224 are located over 70 kilometers northeast of Salvador, Brazil in the Reconcavo Basin. Its blocks in Peru include Block 123, Block 129, Block 107 and Block 133.