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

Fu, Pengcheng; Carrigan, Charles R.

doi:10.15121/1358114

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

Dataset
Other Related Research

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:

Fu, Pengcheng; Carrigan, Charles R.

Lawrence Livermore National Laboratory

Publication Date:: 2011-12-31

Other Number(s):: 171

Research Org.:: DOE Geothermal Data Repository; Lawrence Livermore National Laboratory

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)

Subject:: 15 GEOTHERMAL ENERGY; discrete fracture network; egs; enhanced geothermal system; geothermal; hydraulic fracturing; hydraulic shearing; hydro-shearing; reservoir modeling; reservoir stimulation

OSTI Identifier:: 1358114

DOI:: https://doi.org/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., 2011. 
        Web.  doi:10.15121/1358114.

Copy to clipboard


                    Fu, Pengcheng, & Carrigan, Charles R. Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation.  United States.  doi:https://doi.org/10.15121/1358114

Copy to clipboard


                    Fu, Pengcheng, and Carrigan, Charles R. 2011.  
"Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation".  United States.  doi:https://doi.org/10.15121/1358114.  https://www.osti.gov/servlets/purl/1358114. Pub date:Sat Dec 31 23:00:00 EST 2011

Copy to clipboard


                    
@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         = {2011},

  month        = {12}

}

Copy to clipboard

Dataset:

View Dataset

DOI: https://doi.org/10.15121/1358114

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Data Explorer and OSTI.GOV collections:

Investigation of Stimulation-Response Relationships for Complex Fracture Systems in Enhanced Geothermal Reservoirs

Dataset Fu, Pengcheng ; Johnson, Scott M. ; Carrigan, Charles R.

Hydraulic fracturing is currently the primary method for stimulating low-permeability geothermal reservoirs and creating Enhanced (or Engineered) Geothermal Systems (EGS) with improved permeability and heat production efficiency. Complex natural fracture systems usually exist in the formations to be stimulated and it is therefore critical to understand the interactions between existing fractures and newly created fractures before optimal stimulation strategies can be developed. Our study aims to improve the understanding of EGS stimulation-response relationships by developing and applying computer-based models that can effectively reflect the key mechanisms governing interactions between complex existing fracture networks and newly created hydraulic fractures. In thismore »« less
Modeling Responses of Naturally Fractured Geothermal Reservoir to Low-Pressure Stimulation

Conference Fu, P ; Carrigan, C R
Natural Reservoir Analysis in Low-Temperature Geothermal Play Fairway Analysis for the Appalachian Basin

Dataset Jordan, Teresa E. ; Camp, Erin

The files included in this submission contain all data pertinent to the methods and results of this task's output, which is a cohesive multi-state map of all known potential geothermal reservoirs in our region, ranked by their potential favorability. Favorability is quantified using a new metric, Reservoir Productivity Index, as explained in the Reservoirs Methodology Memo (included in zip file). Shapefile and images of the Reservoir Productivity and Reservoir Uncertainty are included as well (hover over file display names to see actual file names in bottom-left corner of screen).
Foam Fracturing Study for Stimulation Development of Enhanced Geothermal Systems

Dataset Wang, Hong ; Wang, Jy-An ; Polsky, Yarom ; ...

This is a final technical report for the project: Foam Fracturing Study for Stimulation Development of Enhanced Geothermal Systems (EGS). The goal is to demonstrate the feasibility of foam fracturing in EGS applications. The project, led by Oak Ridge National Laboratory (ORNL), was conducted in collaboration with Temple University. The report describes the research activities with Task 1 at ORNL: foam fracturing testing system development and experimental study on foam fracturing, and Task 2 at Temple University: foam testing and foam characterization. Main findings are: 1. A foam fracturing test system has been developed at ORNL, which can be usedmore »« less
Improvements in 2016 to Natural Reservoir Analysis in Low-Temperature Geothermal Play Fairway Analysis for the Appalachian Basin

Dataset Camp, Erin R.

*These files add to and replace same-named files found within Submission 559 (hover over file display names to see actual file names in bottom-left corner of screen)* The files included in this submission contain all data pertinent to the methods and results of a cohesive multi-state analysis of all known potential geothermal reservoirs in sedimentary rocks in the Appalachian Basin region, ranked by their potential favorability. Favorability is quantified using three metrics: Reservoir Productivity Index for water; Reservoir Productivity Index; Reservoir Flow Capacity. The metrics are explained in the Reservoirs Methodology Memo (included in zip file). The product represents amore »« less

Similar Records