LONDON -- Tullow Oil has hit light oil with the Mahogany-3 well in the West Cape Three Points license offshore Ghana. The well penetrated a total of 33 m (108 ft) of net pay in both the Jubilee field appraisal objective and a deeper exploration target, the company says.
The primary objective of Mahogany-3 was to appraise the Jubilee field reservoir section away from the strong seismic amplitudes that had been the company's main targets to date. Results of drilling, wireline logs, and samples of reservoir fluid indicate that the well encountered 16 m (52 ft) of high quality stacked oil bearing sandstones. This confirms a significant extension of the Jubilee field to the southeast, according to Tullow.
The secondary objective of the well was to drill Mahogany Deep, an exploration target which has been identified on 3D seismic but lies at a previously untested stratigraphic level. In this section, the well encountered 17 m (56 ft) of good quality oil bearing reservoir sandstones at levels significantly deeper than the oil water contacts previously intersected on the Jubilee field.
The semisubmersibleEirik Raude drilled the well to a depth of 4,028 m (13,215 ft) in a water depth of 1,236 m (4,055 ft). Once wireline logging operations have been completed, casing will be set in advance of further drilling which is being carried out to gain further information on the regional geology. Following the conclusion of activities on Mahogany-3, the rig will move to the Tweneboa-1 exploration well in the Deepwater Tano block. Drilling activities are expected to begin before the end of this month.