Hyterra Ltd · ASX:HYT
Hyterra — AAPG Midcontinent Sectional 2025
17 slides from Hyterra's conference presentation, Oct 8, 2025
Slide 1: Early Insights from Geological Hydrogen Exploration Drilling in Kansas
Early Insights from Geological For personal use only Hydrogen Exploration Drilling in Kansas Avon McIntyre, Benjamin Mee, Jeff Goodall, Josh Whitcombe, Ken Bull, Paul Kralert, Eujay McCartain, Steve Moss AAPG Midcontinent Sectional 2025 October 2025 ASX: HYT Oklahoma hyterra.com A WORLD OF OPPORTUNI
Slide 2: Important information
Important information This presentation and these materials (together the “Presentation”) have been prepared by HyTerra Ltd (ABN 68 116 829 675) (ASX: HYT, HyTerra or the Company) as a summary of HyTerra’s operations and results for the No distribution in United States or other jurisdictions outside
Slide 3: Our purpose
Our purpose July 2025. Drilling McCoy 1 at the Nemaha Project, Kansas. To deliver the world’s For personal use only cheapest, cleanest, and most profitable hydrogen. How we will get there. 01 Deliver a comprehensive exploration program. 02 Secure key partnerships and customers. 03 Demonstrate a comm
Slide 4: Firstly, what is geologic hydrogen?
Firstly, what is Hydrogen production cost ranges 2022-2023^, $US geologic hydrogen? $4.5-6/kg+ Green Geologic hydrogen is hydrogen gas that For personal use only exists naturally within the Earth's crust, unlike hydrogen produced through $2-5/kg industrial processes like steam methane Blue reforming
Slide 5: Why Kansas?
Why Kansas? Prospective subsurface above the Mid- For personal use only Continental Rift with strong well control, historical offset data and active research support. Stable, standardised jurisdiction with supportive local, State and Federal agencies across approvals, contractors and technical requi
Slide 6: Hydrogen and Helium in Kansas
Hydrogen and Helium Hydrogen Iron-rich rock-water interactions in Kansas Helium 3FeO(rock) + H2O → Fe3O4(rock) + H2 Water from the Rocky For personal use only Mountains seeps underground and flows eastward. Fe2+ The underground water reacts with iron-rich rocks at elevated temperatures to make H2, w
Slide 7: Clear strategy to explore and appraise resource potential
Clear strategy to explore and Multiple wells in multiple plays to appraise resource potential. methodically de-risk commercial viability. ✓ ✓ ✓ ✓ For personal use only # # # # Pre-Cambrian 10 km Granite Basement # Refer to ASX releases dated 31 March 2025 + 22 May 2025 + 3 July 2025 + 18 Aug 2025 re
Slide 8: All three wells found hydrogen and helium
All three wells found hydrogen and helium Fractured basement seen in all 3 wells For personal use only Geologic hydrogen and helium is present in the Precambrian basement1 Precambrian basement contains open fractures which show a general correlation with mud gas shows Early appraisal results demonst
Slide 9: 2025 program advanced beyond initial well twinning
2025 program advanced beyond initial well twinning and delivered key technical milestones. For personal use only Mining, Oil, and Gas geoscience and geophysical workstreams established the foundation for future drilling. Applied proven exploration methods to hydrogen, targeting areas with confirmed
Slide 10: Nemaha Project returned hydrogen concentrations up to 96% in Sue Duroche 3
Nemaha Project returned hydrogen concentrations up to 96% in the Sue Duroche 3 well1. For personal use only Laboratory analyses of mud gas samples validate the historical occurrences of up to 92% hydrogen measured in the historic Sue Duroche 2 well (2009)2. These concentrations of hydrogen are among
Slide 11: Blythe 13-20 returned hydrogen and helium concentrations
Blythe 13-20 returned hydrogen and helium concentrations up to 16.5% and 4.4%1. For personal use only Laboratory analyses of mud gas samples validate the historical occurrences of up to 56% hydrogen measured in the historic Scott 1 well (2009)2. Encouraging hydrogen and helium results confirm the pr
Slide 12: Nemaha Project returned hydrogen concentrations up to 83% in McCoy 1
Nemaha Project returned hydrogen concentrations up to 83% in the McCoy 1 well1. For personal use only Laboratory analyses of mud gas samples confirm up to 83% hydrogen and 5% helium in the first non-twin well Confirms the validity of in-house IP and subsurface understanding The McCoy 1 exploration w
Slide 13: Sue Duroche and Blythe 13-20 gas shows
Sue Duroche 3 and Blythe 13-20 gas shows1 Wellhead gas shows observed during clean-up For personal use only Sue Duroche 3; 2 days flow and shut-in to remove drilling fluids with well free-flowing water from open- hole Precambrian basement section (2,227 ft total) Blythe 13-20; 2 days of swabbing and
Slide 14: McCoy flowing gas shows
McCoy 1 flowing gas shows1 Hydrogen (ppm) Real-time monitoring of flowing gas shows during well clean-up swabbing For personal use only Helium (ppm) 4 days of swabbing to remove drilling fluids from open-hole Precambrian basement section (4,132 ft total) Fluid swabbed from well exceeded losses and w
Slide 15: Drilling induced hydrogen gas reaction series
Drilling induced hydrogen gas reaction series Drilling may have a temporary effect on subsurface gas compositions, particularly hydrogen For personal use only Pre-drill subsurface gas compositions stable (geologic hydrogen present in subsurface) Temporary Pre-drill interim Return to reaction pre-dri
Slide 16: Hydrogen drilling is similar to oil and gas, but with unique challenges
Hydrogen drilling is similar to oil and gas, but with unique challenges. For personal use only It’s similar, but different. We had to adapt traditional approaches to exploration drilling for hydrogen. Standard exploration methods still apply; do your homework, clear well objectives, cost options and
Slide 17: A world of opportunity
A world of opportunity. HyTerra is advancing hydrogen and For personal use only helium projects in the heart of an established agriculture and manufacturing hub. 01 All three wells found hydrogen and helium (mud gas) 02 2025 program advanced beyond initial well twinning and delivered key technical m