Thanks Ed,
Most of that is fairly standard.
I wasn't awaare of this particular field, and that particular researcher but you will note that it is discounted early on as being of any economic value. It's just an oddity, like the others I mentioned.
Some fields do lie on active migration routes or seeps from deeper pools, and you can see the chemistry of the oil changing across the oil pool as you approach the charge point.
Very rarely do you see changes with time like that.
I'll file it away in memory for a rainy day...