In what was most likely mapped as Everglades by Edison Norge when the company operated licence PL807, Aker BP has now proven a small volume of up to 11.9 MMboe recoverable in Overly in PL 1085.
A lead and a discovery
Edison mapped Everglades as both a lead and discovery. It had namely been drilled by a well before (2/8-13, 1989), but the operator at the time (Amoco) had not recognised the presence of hydrocarbons in this shallow interval.
As the PL807 relinquishment report says: “Everglades is seen as a missed discovery drilled by well 2/8-13. It was only identified after analysis of the SATLOG data for 2/8-13. The report from the well itself does not indicate the presence of a possible reservoir at that interval (and only report gas shows at shallower intervals).”
The NPD press release on the Overly well describes two reservoirs of reasonable quality of 56 m and 68 m thickness in the Miocene/Pliocene Nordland Group. Where there really no sands in well 2/8-13?
Everglades seems to be a good example of missed pay in an unrecognised play at the time, which has now been further tested and proven by Aker BP. Although Edison expected Everglades to be in reservoirs of Miocene age, and the NPD press release mentions Lower Pliocene clinoforms, it is likely that the Everglades lead still represents what Aker BP named Overly.
Aker BP’s pre-drill estimate for Overly was 38-92 MMboe, so the well has disappointed in terms of anticipated volumes.
HENK KOMBRINK
