Gamba/Ivinga is a large mature field onshore Gabon. Gamba has been onstream since 1967 and is the oldest onshore field in the country. A slow natural decline and continuous drilling has extended the field's producing life. The Totou satellite field was shut in in 1996 and brought back onstream by Shell Gabon in 2000. Gamba/Ivinga crude is blended with production from other onshore fields and exported as the Rabi Blend via Shell's Gamba terminal.