What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion
Name
What moved where.pdf
Size
710.06 KB
Format
Adobe PDF
Checksum (MD5)
f371deb66ba3a7f7455ac92b903333ab
Author(s)
Malcolm, Alison E.
Poliannikov, Oleg V.
Fehler, Michael
Date Issued
January 2017
Journal
The Leading Edge
Publisher
Society of Exploration Geophysicists
Citation
Poliannikov, Oleg; Malcolm, Alison and Fehler, Michael. “What Moved Where?: The Impact of Velocity Uncertainty on Microseismic Location and Moment-Tensor Inversion.” The Leading Edge 36, no. 2 (February 2017): 166–170 © 2017 The Society of Exploration Geophysicists
Version
Final published version
Abstract
With the rise of unconventional resources, microseismic monitoring is becoming increasingly important because of its cost-effectiveness. This has led to significant research activity on how best to locate events and characterize their moment tensors. Locations tell us where fracturing is occurring, allow the tracking of fluid movement, and fracture propagation. Moment tensors help to determine the type of failure occurring, which is beneficial in planning and interpreting the results of hydraulic-fracturing jobs and in monitoring production. The rising number of methods to determine parameters raises important questions about how uncertainties in the input parameters are translated into uncertainties in the final locations and moment tensors. We present a framework for assessing these uncertainties and use it to demonstrate how velocity uncertainty — as well as uncertainties in arrival times and amplitudes — translates into uncertainties on the recovered quantities of location and moment-tensor parameters.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1190/tle36020166.1
