Tullow Oil plc provides an update on progress with the Priodontes-1 well, offshore French Guiana.

The Priodontes-1 well, offshore French Guiana, has now been drilled to a Total Depth of 6,318m in water depths of 1,750m. Having encountered no hydrocarbons in the main target reservoir, the well has been plugged and abandoned. The Stena Ice Max rig will now move to the site of the Cebus exploration well (GM-ES-4). Spudding of this well, which will test a new and totally separate fan, is due within the next two weeks.

Angus McCoss, Exploration Director of Tullow Oil plc, commented today,"Although this well did not encounter significant hydrocarbons, we have added substantially to our knowledge of the formations in this frontier exploration area. The campaign now moves to the Cebus prospect which is located in a separate fan to Zaedyus and Priodontes. This means that there is limited read-across for Cebus from the wells drilled thus far. However, all have demonstrated, to differing degrees, that the Cingulata fan system has been charged with oil and Cebus is an excellent prospect from which we can expect a result later this year."

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