Compañía Española de Petróleos (Cepsa) is a Spanish energy company engaged in the exploration and production of crude oil; the refining, distribution and sale of crude oil derivatives; the manufacture and sale of petrochemicals; the supply of gas; and the production and sale of electric energy in Spain and worldwide. The company has regional operations in Brazil, Colombia, Panama, and Peru. Cepsa started operations in Colombia in 2001 and currently holds E&P contracts in the Llanos basin and the high valley of the Magdalena river, including blocks CPR Espinal, Caracara and Triple, and the Balay and North Cañada fields. The company also holds a 5% stake in Oleoducto Central, owner of the main oil pipeline in Colombia, through local subsidiary Cepsa Colombia. In Peru, Cepsa is focused on three exploration areas at block 130 in the Marañon Basin, and blocks 114 and 131 at the Uyacali Basin. It also holds a 50% stake in offshore block 171, located in Brazil's Ceará Basin, which is being developed with London-based company Premier Oil. Cepsa was founded in 1929 and is based in Madrid.