RE: news19 Aug 2021 20:06
Plainly the plan is for Tai-2 to avoid and/or overcome the problems experienced in the first well so that pivotal data can be gathered to potentially confirm a helium discovery at Rukwa.
Tai-1 encountered helium shows in a total of five intervals of the Karoo formation, three of them had been identified pre-drill as targets.
Wireline logging of the uppermost interval did not find evidence of ‘free’ – i.e. movable and producible – gas though data indicated good reservoir potential with porosities of 15 to 20%, something that may bode well for other zones.
Unfortunately for Helium One and its investors this was the only interval among the five that could be examined in detail. Deeper intervals could not be logged nor tested due to poor and deteriorating hole conditions, it said earlier this month.
At the time, the company described the deeper intervals as “thicker and cleaner sandstone units”.
The company also told investors that through the Tai-1 programme it had “learnt a lot about the subsurface”.
Stockbroker SP Angel, in a note, similarly pointed to de-risking that precedes Tai-2.
“Whilst typical exploration risks will remain especially given the close proximity to Tai-1, investors can take some comfort from the evidence of Helium shows at multiple stratigraphic levels recorded during drilling of the first well of the programme,” SP Angel analyst Sam Wahab said.