Oil and gas firm Tullow has announced that the Mercury-2 exploratory appraisal well in Sierra Leone and the Kosrou-1 exploration well in Cte d'Ivoire have both encountered water bearing reservoirs with oil shows.
Tullow holds a 20% stake in Mercury and 22% in Kosrou.
Angus McCoss, Exploration Director, said: "The existence of thick sandstone fairways and a working hydrocarbon system, proven by every well in our exploration campaign, mean that our West African Transform Margin acreage remains highly prospective.
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"The well data will now be integrated into our regional models to improve our chances of making a hub-class discovery with the ongoing campaign which includes the Strontium-1 well in Liberia and the Paon-1 well in Cte d'Ivoire."
The share price fell 0.72% to 1,507.00p by 14:46.
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