Progress of the enhanced geothermal systems(EGS) development technology

Abstract

The concept of Enhanced geothermal systems(EGS) is defined as engineered reservoirs that have been created to extract heat for electric power production at depths from 3 to 10 km economically.As an important field of current geothermal development,the research is full of interest to many developed countries,but China is still in its infancy.In this paper,the concept of EGS and its creation line are introduced at the beginning,and then sum up the scientific and engineering needs of the key technologies and their status during the resource exploration,reservoir creation,wellfield operation and monitoring stages.It is meaningful to improve the understanding of the deep geothermal resource and detecting the direction of technology development in the future.