Imaging of a Geothermal Reservoir using a 4-D Geoelectrical Method
- Key words
- Reservoir monitoring, 4-D geoelectrics, 3-D inversion of SP, Reinjection and production wells
- Conference
- World Geothermal Congress
- Year
- 2005
- Session
- 11. Reservoir Engineering
- Language
- English
- Paper number
- 1121
Full text
698KB, opens in a new tab
Abstract
An advanced geoelectrical technique for imaging potential fractures has been developed by the Engineering Geophysics Laboratory in Kyushu University. The method, Fluid Flow Tomography (FFT), has been applied to monitor fluid-flow behaviors during water injection and steam production operations in geothermal areas. Distribution and extension of potential fractures can be evaluated by 3-D inversion of induced self-potential (SP) anomalies as a function of time and resistivity structures can be determined by 3-D inversion of the mise-a-la-masse data in a surveyed area. It is concluded that fluid-flow behaviors in potential fractures could be continuously traced and visualized as a function of time by the FFT method.
Copyright 2005, International Geothermal Association. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.