Petroleum industry in Chad
Chad maintains sizable reserves of crude oil which, alongside agriculture, makes up the largest share of the landlocked former French colony's export revenue. Producing around 100,000 barrels of oil a day, most of Chad's crude comes from its reserves in the Doba Basin in southern Chad where oil was discovered in the early 1970s by foreign drillers.
Source: Wikipedia — Petroleum industry in Chad (CC BY-SA 4.0)