Nyuni licensees approve appraisal program

Offshore staff

DAR-ES-SALAAM -- The partners in the Nyuni joint venture offshore Tanzania have opted to drill the Nyuni 2 exploration well in December, according to Key Petroleum.

The well will be drilled directionally from Nyuni Island in the northeast of the Nyuni block to a subsurface target 1.47 km (9.6 mi) to the east, beyond the edge of the continental shelf.

Key says the well will test a very large anticlinal closure drilled by the Nyuni 1 well in 2003-04, which discovered a 15-m (49-ft) gas column in Albina-Aptian sandstone. However, the gas-bearing zone could not be flow tested at the time due to operational factors.

The primary target for the coming well will be the deeper Neocomomian sand unit that houses the Kiliwani North and Songo Songo offshore gas reservoirs. Aminex, the joint venture operator, estimates Nyuni’s mean gas potential at around 1 tcf in the Nyuni Anticline.

In the near shore West Songo Songo block, Key says seismic reprocessing is under way to define known leads such as Chocha and Afisi, and others emerging following geological studies.



07/29/2010