Development of 300°C Fiber Optic Seismic Sensors for Geothermal Reservoir Imaging and Monitoring
- Key words
- 300°C; high-temperature; seismic; fiber-optic; vector-sensor; high-resolution; large-bandwidth; large-aperture array; imaging; monitoring
- Conference
- Geothermal Resources Council Transactions
- Year
- 2013
- Session
- Exploration; Geophysical surveys; Seismic surveys; Equipment
- Language
- English
Abstract
We are introducing a recently developed high temperature Fiber Optic Seismic Sensor (FOSS)? implemented as a Vector Sensor for seismic imaging and monitoring especially adapted for geothermal applications. We are presenting the design and experimental test results for the fiber optic seismic sensor and comparing its performance with regular exploration geophones and high performance accelerometers. We demonstrate that the new Fiber Optic Seismic Sensor (FOSS)? has a significantly better performance than the current state-of-the art coil geophones and accelerometers in terms of noise floor, sensitivity, frequency response and high temperature performance. We are also presenting the deployment system that makes it possible to deploy 1,000 (one thousand) downhole 3C seismic sensors in both vertical and horizontal boreholes.
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