EXPLORATION HISTORY AND PREVIOUS OPERATORS
The area was first explored in the 1970’s by Phillips and Arco, drilling shallow wells on 2D seismic on the Tano North and Tano South structures. Later operators included Dana, GNPC and Tullow in the period 2000 to 2009, drilling on 3D data. In spite of a number of appraisal wells on the original discoveries and some outpost structures, no firm plan of development for the area emerged, with the discovery of Jubilee/Mahogany in 2008, exploration efforts shifted into the deeper water, Turonian ponded tubidite reservoirs in deeper water. 19 wells have been drilled to date on the East West of the Asset.
Ghana: Expanded Tano Shallow Block
Awarded in March 2014
Combined surface area of 1,508 km2 in water depths of zero to about 200 meters.
The Tano Shallow comprises three legacy discovered fields (South Tano 1978; North Tano 1980 and West Tano 2000), which are located 15 to 35 km offshore in water depth between 55 and 116 meters. Given the present advancements in production technology and sub-surface interpretation the fields are currently under evaluation for economic viability for development.
The equatorial margin of Ghana has recently been proven a prolific basin with successful tests of the basin floor fan plays and up-dip connectivity via channel complexes and incised valleys throughout the Upper Cretaceous sequences. Our exploration efforts on Tano Shallow integrate these new concepts and the enhanced knowledge base with the goal to increase the hydrocarbon potential of the Tano Shallow block.
Field Summaries – GNPC 2009
Ghana Oil and Gas Profile
Five (5) sedimentary basins have been identified in the country. These are: