Results 81 to 90 of about 959 (206)

Effects of fracture evolution and non-Darcy flow on the thermal performance of enhanced geothermal system in 3D complex fractured rock

International Journal of Mining Science and Technology
In fractured geothermal reservoirs, the fracture networks and internal fluid flow behaviors can significantly impact the thermal performance. In this study, we proposed a non-Darcy rough  discrete fracture network (NR-DFN) model that can simultaneously ...
Yachen Xie, Jianxing Liao, Pengfei Zhao, Kaiwen Xia, Cunbao Li   +4 more
doaj   +1 more source

Optimal scheduling of regional integrated energy systems with hot dry rock enhanced geothermal system based on information gap decision theory

Energy Science & Engineering
Hot dry rock (HDR) is regarded as a promising resource of geothermal energy and becomes an important field for future geothermal development due to its advantages of high temperature, wide distribution and huge reserves.
Qingfeng Liu, Mohamed A. Mohamed, Adrian Ilinca, Andres Annuk, Emad Abouel Nasr   +4 more
doaj   +1 more source

A scoping review of numerical modelling studies of geothermal reservoirs: Trends and opportunities post-COP25

International Journal of Renewable Energy Development
At the 28th Conference of Parties (COP28) a commitment to triple renewable energy capacity by 2030 was made. Currently at 16 GW, geothermal accounts for 0.5% of world-wide installed renewable electricity capacity.
Ella Maria Llanos, Daniela Blessent
doaj   +1 more source

A fracture flow permeability and stress dependency simulation applied to multi-reservoirs, multi-production scenarios analysis

Geothermal Energy, 2019
The use of the subsurface and the exploitation of subsurface resources require prior knowledge of fluid flow through fracture networks. For nuclear waste disposal, for the enhancement of hydrocarbon recovery from a field, or the development of an ...
Baptiste Lepillier, Alexandros Daniilidis, Nima Doonechaly Gholizadeh, Pierre-Olivier Bruna, Juliane Kummerow, David Bruhn   +5 more
doaj   +1 more source

A systematic review of enhanced (or engineered) geothermal systems: past, present and future [PDF]

, 2013
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 reviews all of the EGS projects worldwide, based on the information available ...
Breede, Katrin, Liu, Xiaolei, Falcone, Gioia, Dzebisashvili, Khatia   +3 more
core   +1 more source

Numerical Investigation on the Influence of Areal Flow on EGS Thermal Exploitation Based on the 3-D T-H Single Fracture Model

Energies, 2018
The research on the factors of heat recovery performance of Enhanced Geothermal Systems (EGS) is an important issue, especially in the well position optimization in EGS, because it can maximize the economic benefits of EGS. Based on the three-dimensional
Chi Yao, Yulong Shao, Jianhua Yang
doaj   +1 more source

Geothermal Technologies Program: Enhanced Geothermal Systems

, 2004
This general publication describes enhanced geothermal systems (EGS) and the principles of operation. It also describes the DOE program R&D efforts in this area, and summarizes several projects using EGS ...

core  

Numerical investigations on the performance analysis of multiple fracturing horizontal wells in enhanced geothermal system

Geothermal Energy
The development of geothermal energy through enhanced geothermal systems (EGS) often encounters challenges such as fluid short-circuiting, water loss, and insufficient connectivity. This study presents a time-dependent seepage and heat exchange model for
Hongwei Wang, Yongbo Tie, Hejuan Liu, Linyou Zhang, Haidong Wu, Xiaohui Xiong, Xianpeng Jin, Donglin Liu, Dan Wang, Dongfang Chen, Lisha Hu   +10 more
doaj   +1 more source

Phase-Field Modeling of Thermal Fracturing Mechanisms in Reservoir Rock Under High-Temperature Conditions

Applied Sciences
Thermal stimulation represents an effective method for enhancing reservoir permeability, thereby improving geothermal energy recovery in Enhanced Geothermal Systems (EGS).
Guo Tang, Dianbin Guo, Wei Zhong, Li Du, Xiang Mao, Man Li   +5 more
doaj   +1 more source

Excavation based enhanced geothermal system (EGS-E): introduction to a new concept

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2019
The current technology for enhanced geothermal system (EGS) typically involves drilling of deep injection and production wells to inject cold water into the injection well to the EGS reservoir depth, to extract heat by permeating through the fractured hot rock masses, collected by the production well and return to the surface as heated water.
J. Zhao, C. A. Tang, S. J. Wang
openaire   +1 more source