Mahmoud Hefny Research Interests

Mahmoud Hefny

PhD Student for Geothermal Energy and Geofluids


Mailing Address
Mahmoud Hefny
Geothermal Energy & Geofluids
Institute of Geophysics
NO FO 47.2
Sonneggstrasse 5
CH-8092 Zurich Switzerland

Phone +41 44 632 6538
Email mhefny(at)

Dominique Ballarin Dolfin
Phone +41 44 632 3465
Email ballarin(at)

Research Interests

My research interest is engineering Nubian Sandstone reservoir to extract enthalpy while sequestering CO2, forming a so-called CO2-Plume Geothermal (CPG) system. I am studying CO2 plume migration at multiple length scales range from Nano-meter scale using Synchrotron Radiation X‐ray Tomographic Microscopy (SRXTM) to reservoir-scale using the released subsurface field dataset. I am, currently, focusing on employing capillary pressure, relative permeability curves and pore-scale displacement mechanisms to predict the extent of CO2 plume migration at a representative geological scale.

Pore-Network Modeling: Quasi-static (Drainage and Imbibition) simulations of two-phase (scCO2-Brine) in a natural rock sample (Nubian Sandstone, Egypt) to incorporate the effects of CO2 trapping.