Petroleum Africa
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Tuesday, April 12, 2016
Cairn Energy and its partners offshore Senegal, FAR Ltd. and ConocoPhillips, have seen another success with the drilling of the BEL-1 well. The well was targeting the Bellatrix exploration prospect and appraising the northern extent of the SNE field discovered in 2014.
The main exploration objective zones are tight gas-bearing sandstones that are not of productive reservoir quality; however, two good quality gas-bearing sand reservoirs (combined net thickness of eight meters were encountered between the Bellatrix main objective and deeper SNE appraisal objective.
On the BEL-1 appraisal target, drilling confirmed the extension of reservoirs in the northern area of the SNE field. Good quality reservoir sands encountered within the upper reservoirs which had good correlation and presence of the principal reservoir units between SNE-1, SNE-2, SNE-3 and BEL-1 over a distance of more than 9 km.
These well results, along with the latest 3D seismic acquired in Q4 2015, will be incorporated into block wide remapping to look at possible new plays and down-dip oil potentially associated with the shallower reservoirs.
In light of the success of the ongoing appraisal program, the JV has agreed that the Ocean Rig Athena will now drill SNE-4 to appraise the eastern extent of the field, aiming to confirm the nature of the upper reservoirs in the oil zone.
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