bongo and fp, page-43

The precise interests of VIL in this Bongo well are:
12.5% participating interest - they had to pay this percentage of the drilling costs.
9.375% working interest(W.I) - they have to pay this percentage of the completion costs of the well.
6.94% net revenue interest(N.R.I.) - after royalties payable from gas/condensate production.

We'll have to wait(ages)before we get a possible net reserves figure - Caza were originally hoping for 25bcfe gross pre-drill from this well but as the lower targets were not achieved that means considerably less has been found.