Afren said it expected future horizontal production at the Okoro East wells would yield between 4500 barrels and 7000 of oil per day per well, based on data from three drill stem tests undertaken since 17 January.

The tests revealed oil reserves at between 38 degrees API and 40 degrees API as well as multi Darcy permeabilities and average porosity of between 30% and 35%, in what the company said were “excellent reservoir sands”

The wells would be drilled in the second half of this year using the free well head slots on the existing Okoro platform.

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