The biggest major exploration was carried out in independent Somalia and the occupied Ogaden in the fifties by western oil companies such as Sinclair Oil Corporation, Standard oil and the current estimates are either based on old technology used at the time or estimates made in the seventies and eighties.
Sahaminta ugu badan waxaa laga sameeyey Soomaaliyada xorta ah iyo dhulka la haysto ee Ogaden sanadihii 1950-naadkii oo ay sameeyeen shirkado reer galbeed ah sida Sinclair Oil Corporation iyo Standard oil, taas oo qiyaasaha hadda jira ay ku salaysan yihiin farsama hore oo la adeegsadey xilliyadaas hore ama qiyaaso la sameeyey 1970-naadkii iyo 1980-naadkii.