The goal of this study is to review 18 significant enhanced geothermal system (EGS) sites
and technologies that have been applied in the European Union, Japan, South Korea …

Enhanced (or engineered) geothermal systems (EGS) have evolved from the hot dry rock
concept, implemented for the first time at Fenton Hill in 1977. This paper systematically …

We review ten historical Enhanced Geothermal Systems (EGS) projects and find that
typically, during injection:(1) flow from the wellbore is from preexisting fractures,(2) …

The world's primary energy requirements are supplied to a large extent by non-renewable
energy resources, which has resulted in significant anthropogenic greenhouse gas …

The paper documents 41 European case histories that describe the seismogenic response
of crystalline and sedimentary rocks to fluid injection. It is part of an on-going study to identify …

Understanding the mechanical responses of granites after various thermal shocks is of
utmost significance for heat extraction through from enhanced geothermal systems (EGSs) …

The history of reservoir stimulation to extract geothermal energy from low permeability rock
(ie so-called petrothermal or engineered geothermal systems, EGS) highlights the difficulty …

Thermal cracking behavior of granite at high temperature and high pressure (HTHP) is the
key to the performance of Hot Dry Rock (HDR) geothermal energy extraction system. In this …

The classical concept of hydraulic fracturing is that large, wing-shaped tensile fractures
propagate away from the wellbore. However, in low matrix permeability settings such as …

Rock matrix stimulation is a method of enhancing well production or injection within a broad
range of challenging environments, varying from naturally fractured limestones to …