Description

The H-PERM instrument is designed for high-pressure hydrogen (H₂) core flooding experiments, replicating reservoir conditions to evaluate H₂ flow dynamics. The device is essential for assessing H₂ recovery efficiency, monitoring changes in rock permeability over time, and examining H2-rock interactions and chemical reactions. Applicable to both reservoir and caprock core samples, the H-ERM measures absolute permeabilities to brine and H₂, as well as the end-point effective permeabilities in brine/H₂ two-phase systems. The semi-automated H-PERM includes an injection pump, one floating piston accumulator for brine, three Hydrogen- calibrated mass flow controllers, a hassler core holder, a manually operated confining pump, two differential pressure transducers, a dome-loaded backpressure regulator and a wet gasmeter. The computer station enables the operator to input sample and fluid characteristics along with experimental data (pressure gradient and flow rates), after which the aforementioned permeabilities are calculated using Darcy’s law.