ORGANIC GEOCHEMICAL CHARACTERIZATION AND HYDROCARBON POTENTIAL OF SUBSURFACE SEDIMENTS FROM ANAMBRA BASIN, SOUTHEASTERN NIGERIA

ABSTRACT

Subsurface samples of Mamu Formation from Ezimo 1235 and Enugu 1327 wells, located within the Anambra Basin were examined for organic geochemical characterization and biomarker content in order to determine the lithofacies association, hydrocarbon potential as well as the palaeodepositional environment. The sediments are made up of siltstone, dark coal, highly fissile shale and mudstone. Selected samples, made up of shale and coal from both wells were subjected to Rock Eval and gas chromatography/mass spectrometry (GC-MS) analyses.