Mauritania Sotto-1 ST1 Sidetrack a Dry Hole

Mauritania Blocks Offshore West Africa
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Since the last report on 16 August, the ‘Stena Tay’ drill rig has drilled Sotto-1 ST1 to a final total depth of 3,279 metres. At midnight on 22 August 2005, preparations were underway to commence acquisition of wireline logs as part of the planned drilling and evaluation programme. Following completion of wireline logging, the Sotto-1 ST1 well will be plugged and abandoned as planned and the ‘Stena Tay’ will move to the Espadon-1 exploration well in PSC-B.

The Sotto-1 well is located approximately 110 kilometres southwest of Nouakchott, the Mauritanian capital, and 42 kilometres south of the Chinguetti Field. Water depth is 320 metres.

The well is targeting canyon fill sands in a Lower Miocene interval, of approximately the same age as the Chinguetti and Tiof Oil discoveries in PSC-B. This well is expected to yield valuable information about the southern part of PSC’s A and B, and if successful will extend the area of the prospective Miocene basin.

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