French Guiana operational update

Published on: 23 April 2013

Tullow Oil plc (“Tullow”) provides an update on progress with the Priodontes-1 well, offshore French Guiana. This follows Tullow’s earlier statement on this well issued on 17 April 2013.

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.“

For further information contact

  • Tullow Oil plc

    • James ArnoldInvestor Relations
    • George CazenoveMedia Relations
    • London

  • Citigate Dewe Rogerson

    • Martin Jackson
    • Jack Rich
    • London

  • Murray Consultants

    • Joe Murray
    • Joe Heron
    • Dublin

Notes to editors

Tullow is a leading independent oil & gas, exploration and production group, quoted on the London, Irish and Ghanaian stock exchanges (symbol: TLW). The Group has interests in over 80 exploration and production licences across 15 countries which are managed as three Business Teams: West Africa, East Africa and New Ventures.