Analysis of hydraulic fracturing and reservoir performance in enhanced geothermal systems

Mengying Li, Noam Lior

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

Analyses of fracturing and thermal performance of fractured reservoirs in engineered geothermal system (EGS) are extended from a depth of 5 km to 10 km, and models for flow and heat transfer in EGS are improved. Effects of the geofluid flow direction choice, distance between fractures, fracture width, permeability, radius, and number of fractures, on reservoir heat drawdown time are computed. The number of fractures and fracture radius for desired reservoir thermal drawdown rates are recommended. A simplified model for reservoir hydraulic fracturing energy consumption is developed, indicating it to be 51.8-99.6 MJ per m3 fracture for depths of 5-10 km.

Original languageEnglish
Article number042904
JournalJournal of Energy Resources Technology, Transactions of the ASME
Volume137
Issue number4
DOIs
Publication statusPublished - 1 Jul 2015

Keywords

  • Energy use for hydraulic fracturing
  • Engineered geothermal systems (EGS)
  • Flow and heat transfer in EGS reservoir
  • Geothermal energy
  • Number and radius of fractures for thermal drawdown

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Geochemistry and Petrology

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