RE: high flow rate test first12 Aug 2018 20:06
In my post on this subject early today I mentioned it might be the only one you'd see from me. But now much later (I keep some odd hours!) have reconsidered, and reckon I only half-answered Pijoe's quite reasonable question. So adding this as well.
The question (or part of it).
""to me it is interesting the testing programme had high flow rate first...local oil charge and pressure would have been at a max ..surely a sustained flow first for some time"
Yes, in a 'normal' testing program, one would go in that order. Low-flow, then high flow, then max. But having looked a bit more, this hasn't been quite what would be called 'normal', where everything is done sequentially, but in a continuous way.
It's the last part, the 'continuous' which hasn't been normal. If I understand properly (remember, I'm not invested in UKOG, so haven't followed the story closely at all), HH1 was initially tested a couple of years ago, but simply to see if it would produce.
Then came the more recent campain, starting a couple of months back, with a re-entry, and new cleanup and establishment of some sort of steady flow. Then a hiatus of two or three weeks, followed by the two latest tests.
So in fact the 'sequence' part of things has been followed 'normally'. I note that the latest testing was billed as 'high-rate flow testing', so what's been done is what it says on the can. There was no re-start at low rates (because that had already been done), so they went straight to high-rate, and then max.
I can only assume that the hiatus was taken up with modifying pump equipment parameters and so on, to enable the shift from 'low-flow' to 'high'. I don't know. As I say, haven't been following closely.
Objectively, I think I can say this, without any fears of appearing judgemental nor biased. The sequence has been followed as per planned. And the results published in RNS, though only to the very limited extent one would expect. But as someone else has pointed out, obtaining full test data is like pulling hen's teeth, and can't be expected in an RNS because 99% of people wouldn't understand it anyway. Not quite 'industrial espionage', but close to it.
OK, this time I WILL sign off, but with a further caveat. My own well-testing experiences have either been with things which flow at thousands of bbl/day, scare the living bejesus out of you, and you daren't even risk opening up to 'max'. Or alternatively total dusters where you try to test and it flows zilch. At which point some a**hole from management suggests you run diesel to the flare, just to keep the SP up before everyone bails out. Which one refuses to do and packs one's bags immediately, not wishing to be a partner in such crime.
UKOG falls into neither of these categories, so it's up to you shareholders to make your own choices!
GLA