mandurah - I know where you're coming from re taking some profit.
In relation to one of your other observation:
"If it fell 20% or so before the next ann .... Price tells me at that magnitude something is not right, particularly in lieu of the last ann which couldn't have been more promising."
..... so far this well seems to be fairly airtight and not suffering from any noticeable leaks. So I'd be pretty surprised to see a collapse due to leaked results.
Agree with you entirely - The ann of 21/7 couldn't have been more promising!!!
I also came across some interesting archival type material thrown up on one of the UK sites:
https://twitter.com/ABMckinley/status/493429527490867201/photo/1
..... which provides references to some modelling work undertaken in ~2011.