ABSTRACT

We review important challenges in microseismic monitoring and interpretation of the microseismic events. We start with locations of microseismic events and the impact of temporal changes in velocity during hydraulic fracturing and consider effects of uncertainty in deviation surveys on both downhole and surface monitoring. We continue with source mechanism inversion affected by low and high frequency signal from microseismic events. Finally, we discuss inversion of corner frequency and its reliability in the presence of complex tube waves. Where available, we suggest potential solutions for these challenges.

Keywords:
eisner, source mechanism, frequency, calibration, borehole, tube wave, microseismic event, upstream oil & gas, inversion, velocity model
Subjects:
Reservoir Characterization, Seismic processing and interpretation
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2011. Society of Exploration Geophysicists
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