'Northoil' pid='51689' datel Wrote:PetE – do you know if they have reported coring in any of the wells? There should be an easily recognizable drilling break as they enter the limestone. Given the troubles and open hole above the Kapau, they may not want to take the risk. Maps made without a well are only as good as the seismic data, which in this case, are pretty awful. The geology itself is a mess and 2-D lines have built–in migration issues, not to mention the surface problems. Mapping is tough at best, even after a well. Fortunately, reef indicators can often be seen even if you can’t map location vs. depth precisely. If you’re right that we’re not seeing better porosity/perm. in this location, then yes, updip may be the answer. However, I sure would like to know if I’m in a back- or fore-reef facies. Coring could give you some answers. IF they don’t see water, isn’t a possible oil leg still alive?
Northoil- To my knowledge they have not reported any coring (or anything else)in the recent wells. In the Antelope and Elk wells they took both whole cores and sidewall cores. A 6” hole is a little small for sidewall coring but they probably have such a tool. It is possible that they have taken some full cores in the 200 meter interval and they could have picked up some of the shallow marine fossils in the drill cuttings.
Regarding the possibility of the oil leg down dip if we don’t find water, see my comments above to Calaban.
The possibility of finding oil declines with depth in these deeper wells.