Enhanced Geothermal System with captured CO2

Numerical Studies of Fluid-rock Interactions in Enhanced Geothermal Systems (egs) with Co2 as Working Fluid

There is growing interest in the novel concept of operating Enhanced Geothermal Systems (EGS) with CO2 instead of water as heat transmission fluid. Initial studies have suggested that CO2 will achieve larger rates of heat extraction, and can offer geologic storage of carbon as an ancillary benefit. Fluid-rock interactions in EGS operated with CO2 are expected to be vastly different in zones wit...

On the Production Behavior of Enhanced Geothermal Systems with CO2 as Working Fluid

Numerical simulation is used to evaluate mass flow and heat extraction rates from enhanced geothermal injection-production systems that are operated using either CO2 or water as heat transmission fluid. For a model system patterned after the European hot dry rock experiment at Soultz, we find significantly greater heat extraction rates for CO2 as compared to water. The strong dependence of CO2 ...

Modeling Geochemical Processes in Enhanced Geothermal Systems with Co2 as Heat Transfer Fluid

The concept whereby heat is recovered from a geothermal reservoir by replacing the native aqueous phase with essentially pure high-pressure carbon dioxide as the working fluid is referred to as an Enhanced Geothermal System with CO2 (EGSCO2). The concept has yet to be tested in the field, and the chemical consequences, both within the reservoir itself, and at its periphery, are not fully unders...

ENGINE Coordination Action (ENhanced Geothermal Innovative Network for Europe) BEST PRACTICE HANDBOOK for the development of Unconventional Geothermal Resources with a focus on ENHANCED GEOTHERMAL SYSTEM

Designing multi-well layout for enhanced geothermal system to better exploit hot dry rock geothermal energy

Heat extraction mode, e.g. well layout or arrangement of wells, of enhanced or engineered geothermal system (EGS) is crucial to its performance and directly affects its commercial viability. Assuming the subsurface target hot dry rock (HDR) has been well-fractured and the created heat reservoir can be treated as a homogeneous porous medium, we numerically simulate the long-term heat extraction ...