Tullow Makes Small Discovery at Ebony Offshore Ghana

Tullow Oil's Ebony-1 exploration well, located in the Shallow Water Tano license offshore Ghana, has intersected two hydrocarbon bearing intervals in Late Cretaceous turbidite sands. 

The West Ceres jackup spudded the well on October 22, and the well reached a total depth of 2,640 meters. The well lies in the south-west part of the Shallow Water Tano block in 86 meters of water and is the second commitment well in this license. Successful logging and sampling operations have confirmed a four meter oil bearing interval at 2,053 meters and a two meter high-pressure gas-condensate interval at 2,570 meters.
Log and sample data from the high-pressure gas-condensate sands and a regional seismic interpretation, indicate there may be a connection between these pinched-out sands and the material down-dip Tweneboa oil prospect which lies mainly in the Deepwater Tano license. Other possible interpretations for the high-pressure cannot however be excluded at this stage, and this is subject to ongoing evaluation. 
Tullow (31.5%) operates the Shallow Water Tano license on behalf of partners Interoil (31.5%), Al Thani (22.5%), Sabre Oil and Gas (4.5% carried) and GNPC (10% carried). 
"The current interpretation of the Ebony-1 result is extremely encouraging as it further de-risks the regional prospectivity and improves our overall understanding of the hydrocarbon distribution in the basin," said Tullow Chief Executive Aidan Heavey. "This has potentially positive implications for the Tweneboa stratigraphic trap prospect, which is scheduled for drilling in the first quarter of 2009."
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