The Keta Togo Benin (KTB) Basin stretches across offshore and onshore Nigeria Ghana Togo and Benin in the Gulf of Guinea. It is an abrupt margin basin with a thick sedimentary fill. The Togo sector is a narrow stretch of the basin sandwiched between Ghana and Benin. Compared to the giant discoveries of adjacent basins the Niger Delta fan for example the KTB Basin has yielded low discovered volumes. However the large 2013 Ogo discovery in Nigeria sparked new exploration interest in the basin.