Recent developments in the building sector, district heating and cooling (DHC) field, and
geothermal technology are reported here, which indicate the trends and efforts to more …

This article reviews laboratory experimental studies on hydraulic fracturing under triaxial and
true triaxial stress conditions in crystalline rock for geothermal purposes, and places …

In enhanced geothermal systems (EGS), the natural permeability of deep rocks is normally
not high enough and needs to be increased. Permeability increase can be achieved through …

The effects of fracture distribution on the heat extraction performance of enhanced
geothermal system (EGS) are very significant. Referring to lots of EGS fracturing projects, the …

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 …

Since the 1980′ s, more than 15 geothermal wells have been drilled in the Upper Rhine
Graben (URG), representing more than 60 km of drill length. Although some early concepts …

Deep geothermal energy represents a key element of future renewable energy production
due to its base load capability and the almost inexhaustible resource base. Especially with …

Injection-induced shear stimulation (commonly known as 'hydro-shearing') is often
implemented in Enhanced Geothermal Systems (EGS) to enhance the reservoir …

Sc-CO 2 fracturing would be a potential stimulation method for Hot Dry Rock. A series of Sc-
CO 2 fracturing experiments were performed on granite under different temperature and …

The effect of fracture networks on EGS performance remains worth further investigation to
guide the formulation of geothermal extraction strategy. We established models that account …