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Title: Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation

Abstract

Hydraulic shearing is an appealing reservoir stimulation strategy for Enhanced Geothermal Systems. It is believed that hydro-shearing is likely to simulate a fracture network that covers a relatively large volume of the reservoir whereas hydro-fracturing tends to create a small number of fractures. In this paper, we examine the geomechanical and hydraulic behaviors of natural fracture systems subjected to hydro-shearing stimulation and develop a coupled numerical model within the framework of discrete fracture network modeling. We found that in the low pressure hydro-shearing regime, the coupling between the fluid phase and the rock solid phase is relatively simple, and the numerical model is computationally efficient. Using this modified model, we study the behavior of a random fracture network subjected to hydro-shearing stimulation.

Authors:
;
Publication Date:
Other Number(s):
171
DOE Contract Number:  
AID 19979
Product Type:
Dataset
Research Org.:
DOE Geothermal Data Repository; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
Subject:
15 Geothermal Energy
Keywords:
geothermal; hydraulic fracturing; hydraulic shearing; reservoir stimulation; reservoir modeling; discrete fracture network; enhanced geothermal system; egs; hydro-shearing
OSTI Identifier:
1358114
DOI:
10.15121/1358114

Citation Formats

Fu, Pengcheng, and Carrigan, Charles R. Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation. United States: N. p., 2012. Web. doi:10.15121/1358114.
Fu, Pengcheng, & Carrigan, Charles R. Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation. United States. doi:10.15121/1358114.
Fu, Pengcheng, and Carrigan, Charles R. 2012. "Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation". United States. doi:10.15121/1358114. https://www.osti.gov/servlets/purl/1358114. Pub date:Sun Jan 01 00:00:00 EST 2012
@article{osti_1358114,
title = {Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation},
author = {Fu, Pengcheng and Carrigan, Charles R.},
abstractNote = {Hydraulic shearing is an appealing reservoir stimulation strategy for Enhanced Geothermal Systems. It is believed that hydro-shearing is likely to simulate a fracture network that covers a relatively large volume of the reservoir whereas hydro-fracturing tends to create a small number of fractures. In this paper, we examine the geomechanical and hydraulic behaviors of natural fracture systems subjected to hydro-shearing stimulation and develop a coupled numerical model within the framework of discrete fracture network modeling. We found that in the low pressure hydro-shearing regime, the coupling between the fluid phase and the rock solid phase is relatively simple, and the numerical model is computationally efficient. Using this modified model, we study the behavior of a random fracture network subjected to hydro-shearing stimulation.},
doi = {10.15121/1358114},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {1}
}

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