Browse > Article
http://dx.doi.org/10.7474/TUS.2022.32.3.203

A Hydro-Mechanical Basic Study on the Effect of Shut-in on Injection-Induced Seismic Magnitude  

Yim, Juhyi (Department of Energy Systems Engineering, College of Engineering, Seoul National University)
Min, Ki-Bok (Department of Energy Systems Engineering, College of Engineering, Seoul National University)
Publication Information
Tunnel and Underground Space / v.32, no.3, 2022 , pp. 203-218 More about this Journal
Abstract
A hydro-mechanical study was performed to analyze the relationship between the magnitude of injection-induced seismicity and shut-in. In hydraulic analysis, the suspension of fluid injection makes the pore pressure gradient smaller while the pore pressure at the pressure front can reach the critical value for several hours after shut-in, which leads to the additional slip with wider area than during injection. The hydro-mechanical numerical analysis was performed to model the simplified fault system, and simulated the largest magnitude earthquake during shut-in stage. The effect of the abrupt suspension of fluid injection on the large magnitude earthquake was investigated in comparison with the continuous injection. In addition to the pore pressure distribution, it was found that the geometry of multiple faults and the stress redistribution are also important in evaluating the magnitude of the induced seismicity.
Keywords
Induced seismicity; EGS; Numerical analysis; Hydraulic stimulation; Fluid injection;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim, K. I., Yoo, H., Park, S., Yim, J., Xie, L., Min, K. B., and Rutqvist, J., 2022, Induced and triggered seismicity by immediate stress transfer and delayed fluid migration in a fractured geothermal reservoir at Pohang, South Korea. International Journal of Rock Mechanics and Mining Sciences, 153, 105098.   DOI
2 Korean Government Commission (KGC), 2019, Summary report of the Korean Government Commission on relations between the 2017 Pohang Earthquake and EGS Project. Geological Society of Korea.
3 Kraft, T. and Deichmann, N., 2014, High-precision relocation and focal mechanism of the injection-induced seismicity at the Basel EGS. Geothermics, 52, 59-73.   DOI
4 Langenbruch, C., Ellsworth, W. L., Woo, J. U., and Wald, D. J., 2020, Value at induced risk: Injection-induced seismic risk from low-probability, high-impact events. Geophysical Research Letters, 47(2), e2019GL085878.   DOI
5 McClure, M. W., 2015, Generation of large postinjection-induced seismic events by backflow from dead-end faults and fractures. Geophysical Research Letters, 42(16), 6647-6654.   DOI
6 Abate, J. and Whitt, W., 2006, A unified framework for numerically inverting Laplace transforms. INFORMS Journal on Computing, 18(4): 408-421.   DOI
7 Chang, K. W., Yoon, H., Kim, Y., and Lee, M. Y., 2020, Operational and geological controls of coupled poroelastic stressing and pore-pressure accumulation along faults: Induced earthquakes in Pohang, South Korea. Scientific reports, 10(1): 1-12.   DOI
8 Charlety, J., Cuenot, N., Dorbath, L., Dorbath, C., Haessler, H., and Frogneux, M., 2007, Large earthquakes during hydraulic stimulations at the geothermal site of Soultz-sous-Forets. International Journal of Rock Mechanics and Mining Sciences, 44(8): 1091-1105.   DOI
9 Davis, S. D. and Frohlich, C., 1993, Did (or will) fluid injection cause earthquakes?-criteria for a rational assessment. Seismological Research Letters, 64(3-4): 207-224.   DOI
10 Deichmann, N. and Ernst, J., 2009, Earthquake focal mechanisms of the induced seismicity in 2006 and 2007 below Basel (Switzerland). Swiss Journal of Geosciences, 102(3): 457-466.   DOI
11 Ellsworth, W. L., 2013, Injection-induced earthquakes. science, 341(6142), 1225942.   DOI
12 Itasca Consulting Group, Inc., 2011, UDEC (Universal Distinct Element Code), Version 5.0. Minneapolis: ICG.
13 Majer, E., Nelson, J., Robertson-Tait, A., Savy, J., and Wong, I., 2012, Protocol for addressing induced seismicity associated with enhanced geothermal systems. US Department of Energy, 52.
14 Kim, H. M., Guglielmi, Y., Rutqvist, J., and Park, E. S., 2019, A Technical Review of Hydromechanical Properties of Jointed Rock Mass accompanied by Fluid Injection. Tunnel and underground space, 29(1): 12-29.   DOI
15 Kim, K. I., Min, K. B., Kim, K. Y., Choi, J. W., Yoon, K. S., Yoon, W. S., ... and Song, Y., 2018, Protocol for induced microseismicity in the first enhanced geothermal systems project in Pohang, Korea. Renewable and Sustainable Energy Reviews, 91: 1182-1191.   DOI
16 De Simone, S., Carrera, J., and Vilarrasa, V., 2017, Superposition approach to understand triggering mechanisms of post-injection induced seismicity. Geothermics, 70: 85-97.   DOI
17 Galis, M., Ampuero, J. P., Mai, P. M., and Cappa, F., 2017, Induced seismicity provides insight into why earthquake ruptures stop. Science advances, 3(12), eaap7528.   DOI
18 Verruijt, A., 2013, Theory and problems of poroelasticity. Delft University of Technology.
19 Yim,J., 2018, A Basic Study on the Injection-induced Seismicity During Shut-in Stage, Master Thesis, Seoul National University.
20 Park, S., Kim, K. I., Xie, L., Yoo, H., Min, K. B., Kim, M., ... and Meier, P., 2020, Observations and analyses of the first two hydraulic stimulations in the Pohang geothermal development site, South Korea. Geothermics, 88: 101905.   DOI
21 Dorbath, L., Cuenot, N., Genter, A., and Frogneux, M., 2009, Seismic resp onse of the fractured and faulted granite of Soultz-sous-Forets (France) to 5 km deep massive water injections. Geophysical Journal International, 177(2): 653-675.   DOI
22 McGarr, A., 2014, Maximum magnitude earthquakes induced by fluid injection. Journal of Geophysical Research: solid earth, 119(2): 1008-1019.   DOI
23 Mukuhira, Y., Dinske, C., Asanuma, H., Ito, T., and Haring, M. O., 2017, Pore pressure behavior at the shut-in phase and causality of large induced seismicity at Basel, Switzerland. Journal of Geophysical Research: Solid Earth, 122(1): 411-435.   DOI
24 Schoenball, M. and Kohl, T., 2013, The peculiar shut-in behavior of the well GPK2 at Soultz-sous-Forets. GRC Trans, 37: 217-220.
25 Segall, P. and Lu, S., 2015, Injection-induced seismicity: Poroelastic and earthquake nucleation effects. Journal of Geophysical Research: Solid Earth, 120(7): 5082-5103.   DOI
26 Shapiro, S. A., 2015, Fluid-induced seismicity. Cambridge University Press.
27 Baisch, S., Voros, R., Weidler, R., and Wyborn, D., 2009, Investigation of Fault Mechanisms during Geothermal Reservoir Stimulation Experiments in the Cooper Basin, AustraliaInvestigation of Fault Mechanisms during Geothermal Reservoir Stimulation Experiments: Cooper Basin. Bulletin of the Seismological Society of America, 99(1): 148-158.   DOI
28 Hanks, T. C. and Kanamori, H., 1979, A moment magnitude scale. Journal of Geophysical Research: Solid Earth, 84(B5), 2348-2350.   DOI