Petroleum geologic features and accumulation rules of Cte D’Ivoire Basin, West Africa

The CÖte D'Ivoire Basin is an east-west oriented and elongated basin located in the north of the Gulf of Guinea,the West Africa.The basin is characterized by both transcontinental margin and passive continental margin.The tectonic evolution is divided into 3 phases: pre-rift phase before Aptian,rift phase from Aptian to the early Cinemania,and syn-rift phase ever since Cinemania.Different sedimentary systems form during different phases.The discovered hydrocarbon reservoirs mainly locate in the east-west oriented positive structures in the south of the Jacqueville trough.There are 2 accumulation patterns: rift stratigraphic one and passive continental margin stratigraphic one.Traps are of structural,structural-unconformity and stratigraphic types.