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

Journal Article · Sat Jan 30 00:00:00 EST 2016 · Geothermics

DOI:https://doi.org/10.1016/j.geothermics.2016.01.009· OSTI ID:1237698

Hadgu, Teklu ^[1]; Kalinina, Elena Arkadievna ^[1]; Lowry, Thomas Stephen ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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 Lab. (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, Vol. 61, Issue C; ISSN 0375-6505
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

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