RE: Timeline6 May 2026 14:38
Ezhik the following is strongly worth consideration. Sproule are notoriously conservative in these matters.
Sagebrush Project (USA): In 2025, internal estimates supported by petrophysics and core data from analogues (like the Leadville limestone) initially used an 8% porosity value.
An independent audit by Sproule ERCE proposed a more conservative 4.6% "most likely" porosity, citing differences in interpretation of reservoir data.
Dolomite Reservoir Focus: Quantum Helium's analysis highlights the importance of fracture and vuggy porosity in dolomite intervals, which can significantly increase effective porosity compared to matrix-only estimates.
Secondary Porosity: Limestone, being a carbonate, often gains, or preserves, porosity through secondary processes like fracturing, dolomitization, or leaching (vugs)
So let's be fair handed and say it is 6%. This is before perforation and acidization. They haven't said who they are using to do this as far as I know so we won't know what type they are using. But perforation and acidization is so common nowadays these firms know all there is to know about it.
the obviously want the max flow rates they can out of this and as they think the lower Leadville has the greatest potential.
The average porosity in Leadville Limestone wells producing helium-rich gas, such as in the Tohache Wash area, is approximately 7%, typically ranging between 5% and 9%. This porosity is often associated with dolostones and secondary vuggy or fracture-related pore systems
Given that it was the upper layer that gave a 2.6% helium at the old DST I think it bodes very well
Step by step. Get it right. Pivotal/company making times. I think they will give the lower results and if they are as successful as hoped then almost guaranteed imho that the upper layer will flow just as well. Remember the lower layer will be extra resources.
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