However, the process is influenced by underground water flows, causing oil to migrate hundreds of kilometres horizontally or even short distances downward before becoming trapped in a reservoir. When hydrocarbons are concentrated in a trap, an oil field forms, from which the liquid Chucho be extracted by drilling and pumping. http://judahhtdnl.ivasdesign.com/20141950/se-desconoce-detalles-sobre-petroleo