Overview of Deep Structure Using Microseismicity at Wairakei
- Key words
- microseismicity, Wairakei, 3D seismic energy, upflow, seismic-aseismic transition, BDTZ
- Location
- Wairakei, New Zealand
- Conference
- New Zealand Geothermal Workshop
- Year
- 2013
- Language
- English
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Abstract
The Wairakei Seismic Network collects high spatial resolution microseismic data from thirteen downhole seismometers with depths ranging from ca. 65 m to 1,400 m. This paper examines statistical and spatial characteristics of 5,649 events recorded from March 2009-April 2013. In order to assist spatial analysis, three-dimensional, continuous numeric models of seismic energy are developed. The results show that microseismicity can improve reservoir models by constraining the depth of fluid circulation, by defining deep upflow zones, and locating horizons of higher fracture permeability.
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