### Abstract

The ultimate goal of geothermal reservoir management is to mine as much energy as possible from the reservoir. Since most of geothermal reservoirs are fractured, the development of improved techniques for monitoring, prediction, and control of two-phase mass and energy transport in the fractures are needed. Tracer testing is a powerful tool for characterizing fractures properties such as swept pore volume. By incorporating the pore volume of the fracture estimated from tracer data with a semi-analytical model of mass and energy transport in the fracture and matrix, the energy production rate can be calculated. Previous models to predict energy production assumed single-phase flow and semi-infinite matrix blocks and thus overestimate the energy that can be usefully produced from the reservoir. In this paper, a semi-analytical solution to the mass and energy balance equations is derived for two-phase flow in a fracture with heat conduction from a finite matrix. Calculations using the semi-analytical model are shown to be in good agreement with numerical simulations using the TETRAD simulator.

Original language | English (US) |
---|---|

Pages (from-to) | 665-669 |

Number of pages | 5 |

Journal | Transactions - Geothermal Resources Council |

Volume | 29 |

State | Published - Dec 1 2005 |

Event | Geothermal Resources Council 2005 Annual Meeting - Reno, NV, United States Duration: Sep 25 2005 → Sep 28 2005 |

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### All Science Journal Classification (ASJC) codes

- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Geophysics

### Cite this

*Transactions - Geothermal Resources Council*,

*29*, 665-669.

}

*Transactions - Geothermal Resources Council*, vol. 29, pp. 665-669.

**A semi-analytical model to calculate energy production in single fracture geothermal reservoirs.** / Wu, Xingru; Pope, Gary A.; Shook, G. Michael; Srinivasan, Sanjay.

Research output: Contribution to journal › Conference article

TY - JOUR

T1 - A semi-analytical model to calculate energy production in single fracture geothermal reservoirs

AU - Wu, Xingru

AU - Pope, Gary A.

AU - Shook, G. Michael

AU - Srinivasan, Sanjay

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The ultimate goal of geothermal reservoir management is to mine as much energy as possible from the reservoir. Since most of geothermal reservoirs are fractured, the development of improved techniques for monitoring, prediction, and control of two-phase mass and energy transport in the fractures are needed. Tracer testing is a powerful tool for characterizing fractures properties such as swept pore volume. By incorporating the pore volume of the fracture estimated from tracer data with a semi-analytical model of mass and energy transport in the fracture and matrix, the energy production rate can be calculated. Previous models to predict energy production assumed single-phase flow and semi-infinite matrix blocks and thus overestimate the energy that can be usefully produced from the reservoir. In this paper, a semi-analytical solution to the mass and energy balance equations is derived for two-phase flow in a fracture with heat conduction from a finite matrix. Calculations using the semi-analytical model are shown to be in good agreement with numerical simulations using the TETRAD simulator.

AB - The ultimate goal of geothermal reservoir management is to mine as much energy as possible from the reservoir. Since most of geothermal reservoirs are fractured, the development of improved techniques for monitoring, prediction, and control of two-phase mass and energy transport in the fractures are needed. Tracer testing is a powerful tool for characterizing fractures properties such as swept pore volume. By incorporating the pore volume of the fracture estimated from tracer data with a semi-analytical model of mass and energy transport in the fracture and matrix, the energy production rate can be calculated. Previous models to predict energy production assumed single-phase flow and semi-infinite matrix blocks and thus overestimate the energy that can be usefully produced from the reservoir. In this paper, a semi-analytical solution to the mass and energy balance equations is derived for two-phase flow in a fracture with heat conduction from a finite matrix. Calculations using the semi-analytical model are shown to be in good agreement with numerical simulations using the TETRAD simulator.

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M3 - Conference article

AN - SCOPUS:33745212237

VL - 29

SP - 665

EP - 669

JO - Transactions - Geothermal Resources Council

JF - Transactions - Geothermal Resources Council

SN - 0193-5933

ER -