This applet helps you calculate the storage capacity of hydrogen in million metric tons (MMT) in a geological formation under subsurface PT conditions. The basic formula used is:

Hydrogen Mass = area * thickness * NTG * porosity * saturation * density

Where density is calculated based on real gas formular PV = nZRT.

Limits: temperature between 0 and 200 C, and pressure between 0.1 and 200 MPa.

This calculator is provided free and as is, ZetaWare, Inc. is not responsible for any errors or inaccuracies.

Temperature (C)		°C       °F
Pressure (MPa)		MPa     bar     psi
Area (km2)		km2    acre
Thickness (m)		m   ft
Net To Gross (%)
Porosity (%)
H2 Saturation (%)
--- --- --- --- --- --- --- --- --- --- --- --- --- ---
H2 Storage = 0.38 MMT
Density = 16.882 kg/m3
Compressibility = 1.155
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Below is density as a function of reservoir temperature and pressure. In Trinity 3D, this calculator will be extended to use structure map, polygon area, and isopach etc.

Jacob W. Leachman, Bryce Jacobson, Steven Penoncello, Eric Lemmon; Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen.