ABSTRACT
The occurrence of oil seepages in Colombia has been known since the days of Spanish occupation. It was not until the present year, however, that oil was produced in sufficient quantities for export.
Geologically, the country may be divided into six distinct provinces, namely: Upper Magdalena River Valley, Coastal, Cesar River Valley, Maracaibo Basin, Llanos, and Atrato River Valley.
The only commercial production is obtained from the Tropical property in the Upper Magdalena Valley, probably from the upper Eocene or lower Miocene. A small well has been encountered in the Eocene in the Maracaibo Basin. Development in the Coastal area has not met with commercial success although small quantities of oil and gas have been encountered. Great thickness of sediments in Miocene and Pliocene but presence of many seepages and anticlines together with the accessibility make it worthy of further testing.
