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The Kasamene-3 well was drilled down-dip and 2.2 kilometres to the southwest of the Kasamene-1 discovery well. This deviated well was drilled to a total depth of 1,109 metres and results of logging confirmed some 10 metres of oil pay within a 35 metre thick reservoir section of the Kasamene field. Pressure data confirmed this pay to be in communication with the up-dip Kasamene-1 well, successfully extending the column height of these reservoirs to over 100 metres. High quality reservoirs, 25 metres thick, were encountered on prognosis below the oil-water contact. This successful outcome proves the viability of this location as a future water injection point to support up-dip oil production.
A second well, to explore the Wahrindi North fault block, was then drilled utilising the top-hole section of Kasamene-3. This well, Kasamene-3A, was drilled to a total depth of 988 metres into a separate fault compartment 300 metres to the southwest and encountered over 15 metres of oil pay.
The rig will now move to the Kaiso-Tonya area to drill the Nzizi-3 appraisal well in support of the accelerated Nzizi gas development project.
Tullow has interests in three licences in the Lake Albert Rift Basin in Uganda. Tullow operates Block 2 with a 100% interest and has a 50% interest in Blocks 1 and 3A which are operated by Heritage Oil (50%).
Commenting today, Angus McCoss, Exploration Director, said:
"These Kasamene and Wahrindi North exploratory appraisal results have successfully delineated the upside potential in this immediate area. This takes us a significant step towards first oil in Uganda, which is expected from the Kasamene field in 2011. We continue to work closely with the Government of Uganda on plans for accelerating our exploration and appraisal activities in the region and look forward to commencing a multi-well programme with a second rig in Block 1 next month."