RE: Estimate of resource1 Nov 2023 18:17
Blubay, my take on the miss on the seismic.
Tai-1 and Tai-3 are only 974m apart, Tai-3 being NW of Tai-1. Although they were drilled on different sides of the fault at surface and which happens to run SE to NW, the fault slopes to the SW as it goes deeper so Tai-1 actually crossed the fault at around 400M-500M (where coincidentally the drill broke) so below that level both wells are on the same NE side of the fault.
So I think He1's understanding of what is down there, to a depth of around 1121M interpreted from cuttings etc, is fairly good, which was the depth they got to at Tai-1. They seemed to believe that they were only just above the basement at that point, and decided that at the Tai-3 location the basement would come in a little shallower, as I think intended TD at Tai-3 was intended to be around 1050M.
But I think that what they believed was the basement turns out to be just another layer in the Karoo, which then goes down another 400M-500M+. Question is why did they think that the basement was there - maybe a thick, sticky layer of "something"? Which might have good sealing properties?
Anyway lets hope they're right and the basement is at ~1550M, otherwise they could be drilling a while yet.
But good that they are not "plugging and abandoning", unlike some - that sort of phrase goes down like a lead balloon, not a helium filled one. Perhaps why the tweet has been pulled?
Anyway, my interpretation of the various levels, previously posted -
https://www.flickr.com/photos/194934344@N06/53298629084/in/dateposted-public/
And a slightly clearer map showing how the fault system around the volcanoes to the SE of Tai head NW and then possibly link in with the fault system underlying He1's licence area.
https://www.flickr.com/photos/194934344@N06/53301795762/in/dateposted-public/
And a map on a slightly larger scale showing how Nobles areas are considerably further away from the volcanoes than ours, around 200km vs 140km. If they find something in the BMFC we should certainly have a great chance with the IBFC.
And a map of various "anomalies" -
https://www.flickr.com/photos/194934344@N06/53302021602/in/dateposted-public/
Someone made something this morning of Noble doing "gold plate" 3D seismic over Mbelele-1, whereas we have done 2D over Tai. Well actually they haven't. They've only done 2D over Mbelele-1, but 3D over Mbelele-2, and most of their 3D is on the other side of the lake at Chillichilli (Odd? - $100M+ to drill a well in the lake))
The map also highlights odd "gaps" in licence areas (wonder who has those?), Noble and He1 both having surveyed parts of D3/Kidunda's areas (How? Why?), and a previously undisclosed surface helium spring over D3/Kidunda's area, revealed in papers from 2010 and 2016.
Funny how He1 never mentioned it as it is close to Itumbula.
Hey ho! Never a dull moment.