PetroDexia LLC is a Houston-based subsurface energy development company focused on stimulated geologic hydrogen and scalable subsurface energy systems.
We integrate geology, surface surveys, geophysics, petrophysics, laboratory validation, field development, and economics to identify, stimulate, monitor, and optimize hydrogen-generating subsurface systems.
Our approach integrates selected subsurface development concepts from oil and gas and mining, including wellfield design, fluid circulation, recovery planning, monitoring, and field-scale optimization, with PetroDexia’s proprietary Rate-Determining Step (RDS) Framework to engineer, monitor, and optimize Fe-oxide redox reactions for stimulated geologic hydrogen.
Our work is centered on moving geologic hydrogen from natural occurrence to controlled field development, where engineered water–rock interaction, RDS-guided monitoring, and dynamic optimization support risk reduction, production enhancement, and long-term project scalability.

Stimulated Hydrogen Systems
Research and validation of Fe-oxide hydrogen systems, engineered water–rock interaction, and mineral reaction behavior for stimulated geologic hydrogen.
Subsurface & Prospect Evaluation
Integrated geology, surface surveys, geophysics, petrophysics, well data, laboratory planning, infrastructure screening, and economics are used to evaluate high-potential locations for stimulated geologic hydrogen. These inputs feed into PetroDexia’s proprietary RDS Framework for system characterization, validation planning, and development strategy.
Monitoring & Production Optimization
During field operations, the RDS Framework is designed to integrate monitoring and production data to track system behavior, adjust operating strategy, enhance production, and support decisions related to well performance, well life, field scalability, and project economics.
Pilot-to-Field Development
Pilot planning, recovery strategy, monitoring design, economics, and scalable industrial deployment are structured to move selected stimulated hydrogen opportunities from validation toward field-scale development.

We are committed to advancing stimulated geologic hydrogen through science-driven evaluation, data integration, field validation, and practical development pathways that reduce subsurface risk and create long-term value.
Grounded in geology, surface surveys, geophysics, petrophysics, laboratory validation, and Fe-oxide reaction behavior.
Designed to move stimulated hydrogen systems from prospect planning to validation, pilot design, and controlled field development.
Focused on reducing technical and economic risk while advancing pathways toward scalable industrial deployment.
CORE LEADERSHIP
Natasa Mekic
Founder & Principal Scientist
Milan Mekic
Co-Inventor & Economics Architect
Dr. Mario Ruscev
Senior Advisor - Technology & Strategy
SCIENTIFIC & TECHNICAL COLLABORATION
UT Austin
Analytical and petrophysical collaboration
Piri Technologies LLC
Experimental validation and fluid-rock testing
University of Houston
Geophysics and subsurface mapping support
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