The Sanaga Sud field is located 10 km northwest of the coastal town of Kribi in the central portion of the Douala basin. The Sanaga Sud A-1 discovery well was drilled in 1979 to test an eroded, paleotopographic high block composed of Lower Cretaceous sands and shales and overlain by Upper Cretaceous shales. The structure contained a prominent near-horizontal seismic amplitude event.
Drilling results showed that the amplitude event was a gas-water contact. Two appraisal wells, Sanaga Sud A-2 and A-3, were drilled in 1981. All three wells tested gas and condensate. Gross pay thickness averages 250 m, with an average porosity of 23% and an average permeability of 142 md. Total recoverable hydrocarbons for the field are estimated to be 900 bcf of gas and 4.5 million of bbl of condensate.