Micro-Earthquake At Coso Geothermal Area (2007)

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Exploration Activity: Micro-Earthquake At Coso Geothermal Area (2007)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Micro-Earthquake
Activity Date 2007

Usefulness not indicated
DOE-funding Unknown

 
Exploration Basis
Develop and test a tool to better analyze microearthquake data
 
Notes
A GUI-based interface was developed to use inversion software that greatly increases its ease of use and makes feasible analyzing larger numbers of earthquakes than previously was practical. Examples are shown from an injection experiment conducted in well 34-9RD2, on the East Flank. This tight well was re-drilled February – March 2005. Pervasive porosity and fractures were encountered at about 2660 m depth. These mud losses induced a 50-minute swarm of 44 microearthquakes, with magnitudes in the range -0.3 to 2.6. Most of the largest microearthquakes occurred in the first 2 min. Several additional software packages are being developed to enhance the utility of microearthquake data in geothermal operations and EGS experiments.

 
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