2002
DOI: 10.1007/pl00001262
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Determination of Stress State from Focal Mechanisms of Microseismic Events Induced During Hydraulic Injection at the Hijiori Hot Dry Rock Site

Abstract: Ð The stress state at the Hijiori hot dry rock site was estimated based on the inversion from focal mechanisms of microseismic events induced during hydraulic injection experiments. The best ®t stress model obtained by inverting 58 focal mechanisms of seismic events simultaneously indicates that the maximum principal stress r 1 is vertical, while the minimum principal stress r 3 is horizontal and trends north-south. The average mis®t between the stress model and all the data is 6.8°. The inversion results show… Show more

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Cited by 19 publications
(8 citation statements)
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References 18 publications
(36 reference statements)
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“…Stress inversion techniques have also been applied to induced seismicity related to fluid injection into different types of reservoirs [ Oppenheimer , ; Feng and Lees , ; Sasaki and Kaieda , ; Bohnhoff et al ., ]. These studies have mainly focused on spatial analyses around the geothermal area and particularly on the variations in stress field orientation with depth.…”
Section: Introductionmentioning
confidence: 56%
See 1 more Smart Citation
“…Stress inversion techniques have also been applied to induced seismicity related to fluid injection into different types of reservoirs [ Oppenheimer , ; Feng and Lees , ; Sasaki and Kaieda , ; Bohnhoff et al ., ]. These studies have mainly focused on spatial analyses around the geothermal area and particularly on the variations in stress field orientation with depth.…”
Section: Introductionmentioning
confidence: 56%
“…[3] Stress inversion techniques have also been applied to induced seismicity related to fluid injection into different types of reservoirs [Oppenheimer, 1986;Feng and Lees, 1998;Sasaki and Kaieda, 2002;Bohnhoff et al, 2004].…”
Section: Introductionmentioning
confidence: 99%
“…This is a widely used approach for analyzing induced seismicity in geothermal and hydrocarbon reservoirs [e.g., Fehler et al , 1987; Phillips et al , 2002] based on the assumption that the most effective coupling of hydraulic overpressures (injection pressure) occurs along planar fracture planes. In the current study we combine the geometrical structures derived from the hypocenter distribution with the source mechanisms obtained in the previous section (similar comparisons have previously been done by Sasaki and Kaieda [2002]); that is, we search for planar structures which exhibit a similar source mechanism. We find that a total of 66 events including 40 with fault plane solutions are grouped into four planar structures to which we refer as structure 1–4 in the following.…”
Section: Resultsmentioning
confidence: 99%
“…These focal mechanisms were created by the FOCMEC program using the Pwave first motion data (Snoke et al, 1984). The FOCMEC program provides more realistic solutions even if there is a poor data or limited number of stations (Sasaki and Kaieda, 2002;Snoke 2003;Oros, 2013). The QuickBird images with 0.6 m resolution, dated 22 June 2005, were used for mapping of lineament patterns in the Zakho -Silopi region using the ArcGIS software.…”
Section: Materials and Methods Datasetsmentioning
confidence: 99%