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Title: Using Fully Coupled Hydro-Geomechanical Numerical Test Bed to Study Reservoir Stimulation with Low Hydraulic Pressure

Abstract

This paper documents our effort to use a fully coupled hydro-geomechanical numerical test bed to study using low hydraulic pressure to stimulate geothermal reservoirs with existing fracture network. In this low pressure stimulation strategy, fluid pressure is lower than the minimum in situ compressive stress, so the fractures are not completely open but permeability improvement can be achieved through shear dilation. We found that in this low pressure regime, the coupling between the fluid phase and the rock solid phase becomes very simple, and the numerical model can achieve a low computational cost. Using this modified model, we study the behavior of a single fracture and a random fracture network.

Authors:
; ;
Publication Date:
Other Number(s):
169
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; reservoir modeling; hydraulic shearing; hydraulic fracturing; fracture; reservoir stimulation; low pressure; stimulation
OSTI Identifier:
1358112
DOI:
10.15121/1358112

Citation Formats

Fu, Pengcheng, Johnson, Scott M., and Carrigan, Charles R. Using Fully Coupled Hydro-Geomechanical Numerical Test Bed to Study Reservoir Stimulation with Low Hydraulic Pressure. United States: N. p., 2012. Web. doi:10.15121/1358112.
Fu, Pengcheng, Johnson, Scott M., & Carrigan, Charles R. Using Fully Coupled Hydro-Geomechanical Numerical Test Bed to Study Reservoir Stimulation with Low Hydraulic Pressure. United States. doi:10.15121/1358112.
Fu, Pengcheng, Johnson, Scott M., and Carrigan, Charles R. 2012. "Using Fully Coupled Hydro-Geomechanical Numerical Test Bed to Study Reservoir Stimulation with Low Hydraulic Pressure". United States. doi:10.15121/1358112. https://www.osti.gov/servlets/purl/1358112. Pub date:Tue Jan 31 00:00:00 EST 2012
@article{osti_1358112,
title = {Using Fully Coupled Hydro-Geomechanical Numerical Test Bed to Study Reservoir Stimulation with Low Hydraulic Pressure},
author = {Fu, Pengcheng and Johnson, Scott M. and Carrigan, Charles R.},
abstractNote = {This paper documents our effort to use a fully coupled hydro-geomechanical numerical test bed to study using low hydraulic pressure to stimulate geothermal reservoirs with existing fracture network. In this low pressure stimulation strategy, fluid pressure is lower than the minimum in situ compressive stress, so the fractures are not completely open but permeability improvement can be achieved through shear dilation. We found that in this low pressure regime, the coupling between the fluid phase and the rock solid phase becomes very simple, and the numerical model can achieve a low computational cost. Using this modified model, we study the behavior of a single fracture and a random fracture network.},
doi = {10.15121/1358112},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {1}
}

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