Tullow has a track record of discovering significant oil resources in East Africa. The Group first started exploring in Uganda in 2006, successfully opening the Lake Albert Rift Basin, which has discovered resources of some 1.7 billion barrels of oil. Tullow has taken its knowledge and understanding of the geology in Uganda across into neighbouring Kenya. Since 2012, Tullow’s successful exploration and appraisal drilling campaigns in Kenya have resulted in the opening of a second new tertiary rift play in the South Lokichar Basin. Following a full assessment of all the exploration and appraisal data, Tullow estimates that the South Lokichar basin contains the following recoverable resources: 240 – 560 – 1,230 mmbo (1C–2C–3C) from an overall discovered STOIIP of up to 4 billion barrels.
EXPLORATION & Appraisal SUCCESS
The Ngamia-1 exploration well in Kenya marked the start of a significant programme of drilling activities across the acreage. In 2012, the Ngamia-1 well successfully encountered over 200 metres of net oil pay, the second East Africa onshore tertiary rift basin opened by Tullow. This has since been followed by further exploration success in the South Lokichar Basin at the Amosing, Twiga, Etuko, Ekales-1, Agete, Ewoi, Ekunyuk, Etom, Erut and Emekuya oil accumulations.
A total of 21 appraisal wells have been drilled in the South Lokichar basin and Tullow has also conducted extended well tests, water injection tests, well interference tests and water-flood trials, all of which have proved invaluable for planning the development of the oil fields.