Microseismic event azimuth estimation: establishing a relationship between hodogram linearity and uncertainty in event azimuth

Drew, J. and White, R. S. and Wolfe, J. (2008) Microseismic event azimuth estimation: establishing a relationship between hodogram linearity and uncertainty in event azimuth. SEG Expanded Abstracts, 27. DOI 10.1190/1.3059186

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Abstract

For microseismic data monitored and detected by a downhole vertical array, the polarization, or hodogram information, is needed to determine the event azimuth. To optimally weight when averaging over multiple measurements, we require knowledge of the uncertainties associated with each estimate. We discuss data acquired during a hydraulic stimulation. Using both synthetic data and observed events, by experiment we establish a relationship between the uncertainty in the estimated azimuth (or error), the signal-to-noise ratio, and hodogram rectilinearity.

Item Type: Article
Uncontrolled Keywords: 08AREP IA56 2008 P
Subjects: 02 - Geodynamics, Geophysics and Tectonics
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: SEG Expanded Abstracts
Volume: 27
Identification Number: 10.1190/1.3059186
Depositing User: Sarah Humbert
Date Deposited: 16 Feb 2009 13:02
Last Modified: 23 Jul 2013 10:06
URI: http://eprints.esc.cam.ac.uk/id/eprint/252

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