Natural Hydrogen Consulting
A&A Consulting Services for Natural (Geologic) Hydrogen Exploration, Resource Assessment, Drilling, and Development — Worldwide
Assign your company's Natural Hydrogen exploration and development projects to A&A, and let the high-level, seasoned oil & gas exploration and reservoir consultants of the A&A Consulting Team apply decades of subsurface experience to this emerging resource, around the world.
Natural hydrogen — also called geologic, white, or gold hydrogen — is hydrogen gas that accumulates naturally in the subsurface, generated by geochemical reactions such as serpentinization rather than manufactured at the surface. In a 2024 Science Advances study, U.S. Geological Survey researchers modeled a most-probable estimate of roughly 5.6 trillion metric tons of hydrogen trapped within Earth's crust — most of it too deep, dilute, or dispersed to ever recover, but potentially enough that even a small recoverable fraction could supply all projected global hydrogen demand (roughly 500 million tonnes a year) for centuries. That combination of scale and zero production-side carbon emissions has drawn substantial capital into the space: Koloma alone has raised more than $400 million, backed in part by Bill Gates' Breakthrough Energy Ventures, and companies including HyTerra, Natural Hydrogen Energy, and Gold Hydrogen are actively exploring prospective basins across the U.S. Midcontinent Rift, Australia, and elsewhere. In Bourakebougou, Mali, Hydroma operated a natural-hydrogen-fueled generator for more than seven years, supplying free electricity to a nearby village and providing the industry's clearest proof of concept to date, and the company is now working toward commercial-scale production.
Avasthi & Associates, Inc. (A&A) is an independent petroleum engineering and geoscience consulting firm. A&A does not hold natural hydrogen mineral rights or working interests, and does not sell drilling, production, or hydrogen end-use equipment — our only business is expert technical consulting, which means A&A's Natural Hydrogen recommendations are never influenced by a stake in any particular prospect, technology, or vendor.
A&A's expertise on Natural Hydrogen projects is the same subsurface exploration, drilling, and reservoir engineering expertise A&A has applied to oil & gas E&P for more than five decades — play assessment, prospect generation, well design and testing, and reservoir characterization — adapted to this emerging resource. A&A does not design hydrogen end-use equipment, such as fuel cells, turbines, or other power-generation hardware — for that scope, an equipment vendor or power-systems engineering firm is the right partner. If your company needs Natural Hydrogen exploration, resource assessment, drilling and testing support, or project development consulting, please contact us — the high-level, seasoned consultants and subject-matter experts (SMEs) of the A&A Consulting Team, and collaborators, are available to help your company, around the world.
Related A&A Service: This page is one of nine services under A&A's broader energy transition practice — for A&A's full energy storage, hydrogen, ammonia, lithium, and geothermal service directory, please see A&A's Energy Transition & Decarbonization Consulting page.
1. What Is Natural (Geologic) Hydrogen?
Most natural hydrogen is generated by serpentinization — a geochemical reaction in which water reacts with iron-rich, olivine-bearing rocks such as the harzburgite found in ophiolites (obducted slices of oceanic crust) and in ancient, iron-rich Precambrian basement, releasing hydrogen gas as a byproduct. Like an oil or gas accumulation, a natural hydrogen system needs a source rock, a generation mechanism, a migration pathway, and a trap and seal capable of holding the gas in place. In the United States, the billion-year-old Midcontinent Rift — running from Kansas through Michigan — is considered one of the more prospective provinces, because its iron-rich rock readily generates hydrogen on contact with water. Natural hydrogen is fundamentally different from "blue" or "green" hydrogen, which are manufactured at the surface from natural gas or electrolysis, respectively — natural hydrogen is instead explored for and produced much like a conventional gas resource.
Related A&A Service: For A&A's consulting services on surface-manufactured (blue) hydrogen production, capture, and CO₂ storage, please see A&A's Blue Hydrogen Consulting page.
2. Exploration and Play Assessment
A&A applies the same petroleum-system-analog framework used in conventional oil & gas exploration to natural hydrogen — evaluating source, generation, migration, and trap as a linked system — including:
• Petroleum-System-Analog Play Assessment: evaluating candidate source rocks and generation mechanisms (such as serpentinization), migration pathways, and trap and seal integrity as a linked exploration system
• Surface Seep and Soil-Gas Surveys: geochemical soil-gas and seep surveys, including mapping the circular surface depressions ("fairy circles") frequently associated with active hydrogen seepage
• Potential-Field and Structural Mapping: gravity and aeromagnetic surveys to delineate basement highs, ophiolite bodies, and fault/fracture networks that control hydrogen migration and trapping
• Prospect Generation and Ranking: integrating source, migration, and trap evidence into a ranked drilling inventory
3. Drilling, Testing, and Reservoir Engineering
• Well Design for Hydrogen Service: material selection and completion design that account for hydrogen's high diffusivity, buoyancy, and potential for metal embrittlement
• Gas Analysis and False-Positive Screening: on-site and laboratory gas chromatography and mass spectrometry to distinguish genuine formation hydrogen from drilling-fluid- or steel-corrosion-induced false readings, a well-documented pitfall in early-stage hydrogen exploration
• Formation and Deliverability Testing: flow testing and reservoir characterization to evaluate a discovery's commercial deliverability
• Resource and Reserve Estimation: adapting established oil & gas resource-estimation methodology to this novel, still-evolving resource category
4. Regulatory and Project Development
Natural hydrogen's regulatory landscape is still forming and varies considerably by jurisdiction. In the United States, Iowa and Minnesota have amended their oil and gas statutes to explicitly bring naturally occurring hydrogen within the definition of "gas," giving regulators clear authority to review projects, while other prospective states have not yet issued comparable guidance; South Australia, by contrast, already operates an established licensing regime for hydrogen exploration. A&A's project development services include:
• Regulatory and Permitting Strategy: evaluating the permitting pathway and regulatory status applicable to your project's jurisdiction
• Technical and Economic Feasibility Studies: preliminary and detailed feasibility studies covering play assessment, drilling and testing program design, and project economics
• Investor-Grade Technical Due Diligence: independent technical due diligence for investors, partners, and lenders considering a Natural Hydrogen investment
• Risk assessment and mitigation planning
• Brainstorming sessions with, or an introductory course for, your company's managers and professionals on the Natural Hydrogen opportunity
Software and Technical Tools
The high-level, seasoned consultants of the A&A Consulting Team are expert users of the industry-standard software and technical tools used for state-of-the-art subsurface exploration and reservoir studies, applied to Natural Hydrogen projects, including:
• Petrel: for 3D geological modeling and prospect mapping
• Landmark / SMT: for seismic interpretation and structural mapping
• Geosoft Oasis montaj: for gravity and aeromagnetic potential-field interpretation
• Python and MATLAB: for techno-economic modeling and data analytics
Deliverables
The high-level, seasoned consultants of the A&A Consulting Team deliver decision-grade technical and commercial intelligence for Natural Hydrogen exploration and development projects, including, but not limited to:
• A play assessment and prospect-ranking study, integrating source, migration, and trap evidence
• A geophysical and geochemical survey design and interpretation program
• A drilling, completion, and testing program tailored to hydrogen service
• A resource and reserve estimate built to the level of rigor this emerging resource category supports
• High-quality investor-grade reports, regulatory submissions, and executive presentations
To put the high-level, seasoned consultants and subject-matter experts (SMEs) of the A&A Consulting Team, and collaborators, to work on your company's Natural Hydrogen exploration and development projects, around the world, please contact us.
Frequently Asked Questions
What is natural (geologic) hydrogen, and how is it different from blue or green hydrogen?
Natural hydrogen accumulates in the subsurface through geochemical processes such as serpentinization, and is explored for and produced much like a conventional gas resource. Blue and green hydrogen, by contrast, are manufactured at the surface — blue from natural gas with carbon capture, green by electrolyzing water with renewable electricity.
How much natural hydrogen actually exists, and can it really be recovered?
A 2024 USGS study modeled a most-probable estimate of roughly 5.6 trillion metric tons of hydrogen trapped in Earth's crust, though most of that is too deep, dilute, or dispersed to ever recover. The commercial question for any given project is not the global total but whether a specific prospect has an adequate source, migration pathway, and trap — the same play-based question asked of any oil or gas prospect.
Has natural hydrogen ever been commercially produced?
The clearest proof of concept to date is Hydroma's project in Bourakebougou, Mali, where a natural-hydrogen-fueled generator supplied free electricity to a nearby village for more than seven years. Full commercial-scale production, however, remains an early-stage, pre-commercial industry activity worldwide, with companies such as Koloma, HyTerra, and Gold Hydrogen still in the exploration and appraisal phase.
What does A&A actually do on a Natural Hydrogen project, given how new this resource is?
A&A applies the same subsurface exploration, drilling, and reservoir engineering expertise it has used in conventional oil & gas E&P for more than five decades — play assessment, geophysical and geochemical survey interpretation, well design and testing, and resource estimation — adapted to this emerging resource. A&A does not design hydrogen end-use equipment such as fuel cells or power-generation hardware.
Does A&A hold natural hydrogen mineral rights or sell drilling and production equipment?
No. A&A is an independent petroleum engineering and geoscience consulting firm and does not hold natural hydrogen mineral rights or working interests, and does not sell drilling, production, or hydrogen end-use equipment, so A&A's recommendations are never influenced by a stake in any particular prospect, technology, or vendor.
