Heat extraction from the geothermal reservoir is sensitive to reservoir properties, operating
parameters and coupling among various processes. Due to complex reservoir structure …

Carbon dioxide (CO 2) has been proposed to be used as the geothermal working fluid, as it
presents enhanced thermodynamic properties for this application when compared with the …

With the rapid depletion of oil and gas reservoirs, many oil and gas wells become
abandoned. These abandoned wells could be recovered if they are drilled in proper …

Compared with traditional oil and gas resources, geothermal energy processes the
advantages of zero emission, low investment and high productivity, etc. in this paper, a …

Because of the additional benefit of geological storage and the self-sustaining thermosiphon
effect, CO 2 instead of water as a working fluid for geothermal energy production has …

CO 2-based enhanced geothermal systems (EGS) are being widely studied due to great
heat extraction and additional CO 2 sequestration. However, the existing studies ignored …

A co-axial closed-loop geothermal system is a new method to extract geothermal energy. It
uses a continuously closed wellbore and the closed system can avoid many problems of …

CO 2-enhanced oil recovery (CO 2-EOR) is a potential CO 2 capture, utilization, and storage
technology. In particular, CO 2 can break the hydrochemical balance of water–rock and …

The fractures are the main flow and heat transfer channel for fluids in deep high-temperature
enhanced geothermal systems (EGS). The deformation of the fracture controlled by reactive …

Geothermal energy, as a renewable energy source, has been intensively developed
recently because its utilization can reduce CO 2 emission, climate warming and sea level …