Abstract
The reservoir structure of the Soultz HDR field has been investigated by examining induced microearthquake multiplets. Microseismic events with similar waveforms have been selected from microseismic data obtained during a 1993 hydraulic fracturing experiment. Precise relative arrival times and source locations have been determined by cross-spectrum analysis. The cross-spectrum analysis decreased the residual from 0.75 ms to 0.1 ms. The estimated orientations of the multiplet planes are consistent with fracture orientations detected in Soultz boreholes. A comparison between the stress field and the orientation of structural planes suggests that the structural planes were under a critical condition of frictional slip.
Original language | English |
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Pages (from-to) | 517-541 |
Number of pages | 25 |
Journal | Pure and Applied Geophysics |
Volume | 159 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2002 Jan 1 |
Keywords
- HDR
- Induced seismicity
- Microearthquakes
- Multiplet
ASJC Scopus subject areas
- Geophysics
- Geochemistry and Petrology