Modelling production-induced dynamic rupture of intra-graben faults and related earthquakes in the North German Basin

Hergert, Tobias; Haug, C.; Henk, Andreas; Nüchter, Jens-Alexander

doi:10.1016/j.gete.2022.100339

Cited by 2 publications

(1 citation statement)

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“…To assess the potential of fault reactivation to trigger larger earthquakes than observed to date, for example, by rupture propagation to depths below the reservoir where tectonic stresses may be present in the Carboniferous substrate, a thorough understanding of the mechanical properties of the fault rocks, is needed, especially under seismic slip conditions. Indeed, these data are crucial for constraining numerical modeling of fault rupture and associated seismic hazards (e.g., Buijze et al., 2019; Hergert et al., 2022; Richter et al., 2020; van Wees et al., 2017; Weng et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

Fault Weakening During Short Seismic Slip Pulse Experiments: The Role of Pressurized Water and Implications for Induced Earthquakes in the Groningen Gas Field

et al. 2023

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Fluid production from and injection into subsurface reservoirs can cause multiple (micro)seismic events near boreholes and in surrounding fracture networks, as well as causing creep or seismic slip events on pre-existing faults (Ellsworth, 2013). In the giant Groningen gas field (northeast Netherlands), induced seismic events have occurred since the 1990s, with the strongest occurring on 16 August 2012 with a magnitude of M W 3.6. Most events are interpreted to occur along the pre-existing, high-angle, normal faults that crosscut the Slochteren sandstone reservoir and associated claystones, the overlying basal Zechstein caprock and the underlying Carboniferous siltstone/shale source rocks (Van Eijs et al., 2006). Assuming a circular slip patch, and using the statistical relation between rupture area and earthquake magnitude given by Hanks and Bakun (2008), the larger M W 3-4 events correspond to rupture length-scales of 350-1,155 m, which do not necessarily rupture the entire fault length in the downdip or strike directions (Figure 1). From kinematic modeling of earthquake rupture processes in

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