update, page-38

Agree Jem (re very little info), although it has been known for coning to occur on almost horizontal wells (there is a plethora of research out there on this matter). As for the pressures; I'm just digging around trying to find a reason for the loss circulation at 2,755 - this explanation I have offered seems to match in with the changes and results we have seen (and goes some way in explaining the CH4 seperation from the heavies)...

Kit