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) …

Distributed sensing systems can transform an optical fiber cable into an array of sensors,
allowing users to detect and monitor multiple physical parameters such as temperature …

A fluid injection‐induced seismicity experiment was conducted in the German Continental
Deep Drilling Program (KTB) main borehole at 9.1 km depth (in situ temperature of 260° C) …

Hot dry rock geothermal energy extraction experiments in artificial reservoirs created by
hydraulic stimulation in naturally fractured crystalline rocks have been undertaken in several …

Abstract The Fenton Hill enhanced geothermal system (EGS) test site was the first of its kind,
and interpretations of field observations from the project have influenced the past four …

Occasionally, the injection of fluids into deep wells causes or triggers earthquake activity.
We propose two lists of yes-or-no questions to assess 1) whether an ongoing injection …

Interest in geothermal energy production has grown rapidly in recent years due to the
increasing demand for clean, renewable, domestic energy. Recent publications have …

High‐pressure packer test (HPPT) is an enhanced constant head packer test for
characterizing the permeability of fractured rocks under high‐pressure groundwater flow …

We discuss in this paper the mechanical significance of microseismicity induced by pore
pressure variations. Particular attention is given to identifying whether microseismic events …

Abstract In June/July 2000, a hydraulic stimulation experiment took place at the geothermal
EGS site of Soultz-sous-Forêts (Alsace, France) in order to enhance the permeability of the …