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Downhole microseismic monitoring of hydraulic fracturing: a full-waveform approach for complete moment tensor inversion and stress estimation
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
Downhole microseismics has gained in popularity in recent years as a way to characterize hydraulic fracturing sources and to estimate in-situ stress state. Conventional approaches only utilize part of the information ...
Imaging the Soultz Enhanced Geothermal Reservoir Using Double-Difference Tomography and Microseismic Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-06)
We applied the double-difference tomography method to image the P and S-wave
velocity structure of the European Hot Dry Rock geothermal reservoir (also known
as the Soultz Enhanced Geothermal System) at Soultz-sous-Forets, ...
Focal Mechanism Determination Using High Frequency Waveform Matching and Its Application to Small Magnitude Induced Earthquakes
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
We present a new method using high frequency full waveform information to determine the
focal mechanisms of small, local earthquakes monitored by a sparse surface network. During the
waveform inversion, we maximize both ...
An improved method for hydrofracture induced microseismic event detection and phase picking
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
The ability to detect small microearthquakes and identify their P and S phase arrivals is a
key issue in hydrofracture downhole monitoring because of the low signal-to-noise ratios.
We apply an array-based waveform ...