Looks like it is a blockage issue. Post perforation the well cleans up & once all that is sorted out one gets steady pressure buildup & gas flow on surface via variable choke settings. One usually tries using underbalanced solution, i.e, Brine/ N2 to coax fluids out to surface, but I guess overtime if the pores get blocked up by the drill mud, then there's not much one can do. Slight acid wash etc may help in flushing out the pores etc.
Testing over 3 day (77 hrs) on a 1 inch choke orifice didn't get the pressure above 260 psig. Which is why they are reporting 5.1 mmcfd. Water cut is less then 5.9 bbls/mmcf. Will be interesting to see how NSAI incorporate the latest findings in their Dynamic/ Static model permutations.
Ann: WE5 Production Test Update, page-40
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