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Modeling of heat extraction from variably fractured porous media in Enhanced Geothermal Systems

Journal Article · · Geothermics
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
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Modeling of heat extraction in Enhanced Geothermal Systems is presented. The study builds on recent studies on the use of directional wells to improve heat transfer between doublet injection and production wells. The current study focuses on the influence of fracture orientation on production temperature in deep low permeability geothermal systems, and the effects of directional drilling and separation distance between boreholes on heat extraction. The modeling results indicate that fracture orientation with respect to the well-pair plane has significant influence on reservoir thermal drawdown. As a result, the vertical well doublet is impacted significantly more than the horizontal well doublet
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1237698
Alternate ID(s):
OSTI ID: 1430750
Report Number(s):
SAND--2015-7093J; 603167
Journal Information:
Geothermics, Journal Name: Geothermics Journal Issue: C Vol. 61; ISSN 0375-6505
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (6)

Integral equation solution of heat extraction from a fracture in hot dry rock
  • Cheng, A. H. -D.; Ghassemi, A.; Detournay, E.
  • International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 25, Issue 13 https://doi.org/10.1002/nag.182
journal January 2001
An integral equation solution for three-dimensional heat extraction from planar fracture in hot dry rock
  • Ghassemi, A.; Tarasovs, S.; H. -D. Cheng, A.
  • International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 27, Issue 12 https://doi.org/10.1002/nag.308
journal January 2003
Theory of heat extraction from fractured hot dry rock journal March 1975
A theoretical study of heat extraction from aquifers with uniform regional flow journal December 1975
Coupled thermal-hydraulic-chemical modelling of enhanced geothermal systems journal May 2005
Applications of fractured continuum model to enhanced geothermal system heat extraction problems journal February 2014

Cited By (5)

Sensitivity analysis of coupled processes and parameters on the performance of enhanced geothermal systems journal December 2017
Economic analysis of heating for an enhanced geothermal system based on a simplified model in Yitong Basin, China journal August 2019
Production capacity and mining plan optimization of fault/fracture‐controlled EGS model in Gonghe Basin journal October 2019
Upscaled discrete fracture matrix model (UDFM): an octree-refined continuum representation of fractured porous media journal December 2019
A global review of deep geothermal energy exploration: from a view of rock mechanics and engineering journal October 2019

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Related Subjects

15 GEOTHERMAL ENERGY
Enhanced Geothermal Systems
fractured orientation
heat extraction
reservoir modeling
stochastic methods
well orientation