Ingomar
The Ingomar Dome has all the characteristics of a potentially massive Flathead-style helium discovery, including:
- Large Scale: Closure of 16,512 acres with P50 Gross Unrisked Prospective Resources of 2.3Bcf
- Thick sediment: Reservoir sandstones with proven sealing units in multiple horizons
- Adjacent to major structure: Located on the upthrown side of the deep-seated Sumatra Thrust, which acts as a conduit for helium migration
- Great Economics: NPV8 of $304m with iCAPEX of only $19m calculated on assumed helium grade of 1.5%
- Helium Upside: Presence of 2.5% helium within Flathead Formation improves economics
- Hydrogen: First large-scale hydrogen discovery in the USA. Multiple shows of hydrogen, with 55% gas-in-mud within the Flathead formation.
Clink #1
- First helium exploration well on the Ingomar Dome structure testing stacked reservoir potential in the Flathead, Charles and Amsden formations
- Drilled Q3 2024 to an extended Total Depth of 8,550ft
- Gas sample tested 2.5% helium, demonstrating significant helium potential with the highest helium grade in Montana
- 55.2% hydrogen in gas sample isolated from drilling mud could represent the first large scale geological hydrogen discovery in the United States.
- Additional stimulation required to overcome potential mud induced near-wellbore formation damage generate commercial flow rates
Helix is continuing exploration work to unlock the significant potential of Ingomar Dome demonstrated by promising helium and hydrogen indications seen at Clink #1. This will include acidisation testwork of the Charles Formation to overcome near-wellbore formation damage, as well as potential seismic and drilling to re-enter the highly prospective Flathead Formation.