RE: Sandstone flanks13 Apr 2021 18:21
"the basement must be in contact with and indirectly draining the sandstones already"
Yes, of course they're both in contact. And yes, what you describe is rather what the Bod would like us to believe, according to their original 'kitchen sink' RNS. However something strikes me as implausible about it, and so far the Bod have been very cagey about issuing a new model of what's happening downhole. Because the reservoir is not some sort of kitchen sink! 'Draining the reservoir' isn't like pulling the plug in a sink! The 'pressure drive is from below. If that pressure reduces, sure, some oil (compressed) will leach down from the sandstones towards the wellbore. But this is only a pressure equalisation mechanism.
In a sink, with the plug pulled, two forces are at work: gravity and atmospheric pressure. So although you are draining the sink whan you pull the plug, you could look at it another way and say you're 'filling the sink with air', displacing the water in order to do so.
However, above the sandstones, there isn't a fluid (or gas) above with which to replace the oil. So oil isn't going to 'drop out' of the sandstones towards the wellbore preferentially to oil being pushed up from below by the aquifer.
This is a lapse, a flaw on the Bod's part, and raises as yet unanswered questions. Dr Trice (think what you may of him) gave an almost continuous running commentary on the technical modelling, explaining what was going on, and what was expected. So far, despite the 'kitchen sinking', the new mob haven't done anything to present a proper 'new model' (army).
Meanwhile, well 6 continues to produce (we hope happily) from fractured basement, just as Dr T predicted...
The Fat Lady hasn't sung yet.