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An improved method for hydrofracture induced microseismic event detection and phase picking

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dc.contributor.author Ay, Erkan
dc.contributor.author Song, Fuxian
dc.contributor.author Kuleli, Huseyin Sadi
dc.contributor.author Toksoz, M. Nafi
dc.contributor.author Zhang, Haijiang
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.date.accessioned 2012-01-13T20:20:48Z
dc.date.available 2012-01-13T20:20:48Z
dc.date.issued 2010
dc.identifier.uri http://hdl.handle.net/1721.1/68587
dc.description.abstract 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 correlation approach (matched filter) to improve the detectability of small magnitude events with mechanisms and locations similar to a nearby master event. After detecting the weak events, we use a transformed spectrogram method to identify the phase arrivals. We have tested the technique on a downhole monitoring dataset of the microseismic events induced by hydraulic fracturing. We show that, for this case, one event with a signal-to-noise ratio around 6dB, which is barely detectable using an array-stacked short-time average/long-time average (STA/LTA) detector under a reasonable false alarm rate, is readily detected on the array-stacked correlation traces. The transformed spectrogram analysis of the detected events improves P and S phase picking. en_US
dc.description.sponsorship Halliburton Company en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;2010-12
dc.title An improved method for hydrofracture induced microseismic event detection and phase picking en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Song, Fuxian
dc.contributor.mitauthor Kuleli, Huseyin Sadi
dc.contributor.mitauthor Toksoz, M. Nafi
dc.contributor.mitauthor Zhang, Haijiang
dspace.orderedauthors Song, Fuxian; Kuleli, Huseyin Sadi; Toksoz, M. Nafi; Ay, Erkan; Zhang, Haijiang en_US


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