1887

Abstract

Summary

The results from microseismic event locations, derived using an elastic full waveform matching algorithm, have been used to constrain dynamic rupture models to better understand induced fault rupture geomechanics. This workflow has been applied to events recorded by the shallow borehole network installed at the Groningen gas field in The Netherlands. Focal angles derived from moment tensor inversion are seen to provide a good match to the fault strike angles, but fault dip is poorly constrained along with the seismic interpretation. This is due to the limited vertical resolution of the available datasets.

Dynamic rupture modelling was performed to constrain the slip patch size and displacement, using a linear slip weakening relationship. On one example fault, where several events have occurred over the past few years, microseismic activity from small magnitude events likely transferred stress to neighboring areas of the fault, which accumulated over time and finally resulted in a larger magnitude earthquake which ruptured over a 350m length of the fault.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201901237
2019-06-03
2024-04-20
Loading full text...

Full text loading...

References

  1. Buijze, L., van den Bogert, P. A. J., Wassing, B. B. T., Orlic, B., & ten Veen, J.
    [2017] Fault reactivation mechanisms and dynamic rupture modelling of depletion-induced seismic events in a Rotliegend gas reservoir. Netherlands Journal of Geosciences, 96 (5), s131–s148.
    [Google Scholar]
  2. Cardozo, N. and Allmendinger, R. W.
    [2013] Spherical projections with OSXSteronet. Computers and Geosciences, 51, 193–205, doi:10.1016/j.cageo.2012.07.021.
    https://doi.org/10.1016/j.cageo.2012.07.021 [Google Scholar]
  3. Li, J., Kuehl, H., Droujinine, A. and Blokland, J. W.
    [2016] Microseismic and induced seismicity simultaneous location and moment tensor inversion: Moving beyond picks with a robust full waveform method. SEG Technical Program Expanded Abstracts, 2535–2539.
    [Google Scholar]
  4. van Dedem, E., Willacy, C., Blokland, J., Pieshold, T. and Minisini, S.
    [2018] Full waveform event location and cluster analysis for Groningen induced seismicity. 80th EAGE Conference and Exhibition. Extended Abstracts.
    [Google Scholar]
  5. van Eck, T., Goutbeek, F. Haak, H., Dost, B.
    [2004] Seismic Hazard due to small shallow induced earthquakes. KNMI Scientific report WR 2004-01. Available at www.knmi.nl.
    [Google Scholar]
  6. Willacy, C., van DedemE., Minisini, S., Li, L., Blokland, J. W., Das, I. and Droujinine, A.
    [2018] Application of Full Waveform Event Location and Moment Tensor Inversion for Groningen Induced Seismicity. The Leading Edge, 37(2), 92–99.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901237
Loading
/content/papers/10.3997/2214-4609.201901237
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error