The new seismic interpretation, using the recently acquired higher quality 2D seismic data, shows that the Likonde prospect comprises two distinct channel sands of which the shallower southern channel extends over the mapped Ntorya Cretaceous gas sand. Ntorya-1, drilled in 2012, failed to intersect this Likonde Tertiary sand channel, which lies just north of the well, but discovered a deeper Cretaceous gas sand that tested gas at a rate of 20.1 million cubic feet per day (equivalent to 3,350 barrels of oil per day) and 139 barrels per day of 53 degree API gravity associated condensate from a 3.5 metre perforated interval through a 1 inch choke. The discovery well was completed for eventual production.
In November 2013, independent consultants, ISIS, calculated that the Ruvuma PSC contained unrisked prospective resources of over 5 tcf (mean GIIP) in known prospects and leads. The recent 2D seismic has shown that this original estimate can now be increased.
The Ruvuma PSC predominantly covers the onshore extension of the highly prolific basin in which multiple giant gas fields have been discovered offshore in both Tanzania and Mozambique during recent years. The presence of condensate and oil shows represents a further positive aspect of the onshore play, since liquid hydrocarbons add considerable further commercial value to the discovered gas and suggest the presence of a potential oil play; which has yet to be fully investigated.
The Chinese built gas pipeline from Mtwara to Dar es Salaam is currently being commissioned in 2014 and due to its close proximity to the Ntorya/Likonde area provides an early route to commercialize gas discovered in the Ruvuma PSC.
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