Natural Hydrogen Exploration

Australia has become one of the world's most active frontiers for natural hydrogen exploration

With natural hydrogen regulated under existing petroleum legislation in South Australia, the Northern Territory, Western Australia and Tasmania, and active plays being pursued across the Yorke Peninsula, Gawler Craton, Officer Basin and Perth Basin, the sector has moved from concept to field programme within three years. What it now needs — and often lacks — is independent technical rigour untethered from vendor, promoter or exploration company interest.

CO2Tech provides that independent voice. Two decades of subsurface science at the Otway International Test Centre, applied to CO₂ storage integrity, translate directly to the challenges natural hydrogen exploration faces: identifying and ranking prospective source systems, evaluating migration pathways, assessing trap and containment integrity, and designing the monitoring frameworks that regulators and investors will increasingly require.

Our approach evaluates all recognised generation mechanisms

Serpentinisation of ultramafic rocks under water–rock reaction
Radiolysis driven by radiogenic granites and uranium–thorium decay — a leading Gawler Craton play type
Deep-seated faulting and mantle degassing, often signalled by regional magnetotelluric conductivity anomalies
Thermal maturation of highly mature organic source rocks

For each candidate mechanism, we assess the coupled requirements — active source, viable migration pathway, effective trap, and long-term preservation — using the same probabilistic risk framing applied to CO₂ storage assessment.

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Where we help exploration companies

Prospectivity assessment and screening — geological and geochemical ranking against source, migration, accumulation and preservation criteria, at basin, licence and prospect scale
Basin and formation analysis — evaluation of geological settings against demonstrated or prospective hydrogen occurrence, integrating gravity, magnetics, magnetotellurics and seismic data
Containment and trap integrity — cap rock assessment, fault seal evaluation, retention risk quantification
Subsurface characterisation — integration of seismic, well, geochemical and soil gas data to reduce exploration risk
MMV and monitoring frameworks — surveillance programme design for pilot wells and appraisal campaigns, drawing on 20 years of subsurface monitoring practice at the OITC
Independent resource assessment — ASX-compliant prospective resource statements and competent person reporting for investor and farm-in submissions

Where we help investors and government

Independent technical review of exploration frameworks, prospective resource claims, and MMV planning — for joint venture partners, farm-in candidates, project financiers, and regulators assessing emerging natural hydrogen submissions. Given that natural hydrogen science is still developing globally, independent technical review — free of vendor alliance or exploration company interest — is particularly valuable at this stage of the industry's evolution.

info@co2tech.com.au

Contact CO2Tech for a no-cost 60-minute technical screening of your natural hydrogen prospect or portfolio.

Why CO2Tech

Natural hydrogen is a genuinely new exploration frontier. Global scientific understanding of source systems, migration pathways, trap integrity and preservation is still evolving. Regulatory frameworks are being drafted in real time. Investor and farm-in due diligence standards have not yet settled. In this environment, independent technical review — grounded in decades of applied subsurface science and free of promoter or vendor interest — is not a nice-to-have. It is a prerequisite for serious counterparties.

CO2Tech is well positioned to provide it. Our team has spent 20+ years characterising subsurface systems, evaluating containment integrity, modelling migration and pressure response, and designing monitoring programmes at the Otway International Test Centre. These are exactly the disciplines that determine whether a natural hydrogen prospect is viable — the target has changed, but the science of source, migration, trap and seal remains constant.

Our value to natural hydrogen clients rests on three things. First, subsurface depth: two decades of continuous field science rather than desktop theory. Second, complete commercial independence: no drilling contracts, no vendor alliances, no equipment sales, no exploration company shareholdings — meaning our technical judgements carry weight with regulators, lenders and farm-in counterparties. Third, sector maturity: we bring the disciplined evaluation frameworks used in CO₂ storage and conventional resource assessment (SRMS-style resource categorisation, probabilistic risk framing, competent person reporting) to a sector that is still developing them.

For explorers preparing farm-in packages, for farm-in candidates conducting technical due diligence, or for governments developing regulatory pathways, CO2Tech provides the independent technical foundation the sector now needs.