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Stress measurements in crystalline rock: Comparison of overcoring, hydraulic fracturing and induced seismicity results
Auteur(s)
Maison d'édition
: American Rock Mechanics Association
Date de parution
2017-6-25
De la page
2692
A la page
2699
Résumé
In preparation of a decameter-scale fault stimulation experiment at the Grimsel Test Site, Switzerland, a comprehensive rock stress characterization survey was conducted. The survey combines overcoring of CSIRO-HI and USBM probes with hydrofracture measurements with concomitant monitoring of the induced microseismicity. Impression packer surveys were run following the hydrofracture tests to determine the orientation of the induced fracture at the wellbore. The orientation of the fracture away from the wellbore was determined from the pattern of the microseismicity. The use of a transverse isotropic model for inverting the strains measured during overcoring was essential to obtain stress solutions that were consistent with the hydrofracture and microseismicity results…
Notes
, 2017
Nom de l'événement
51st US Rock Mechanics / Geomechanics Symposium
Lieu
San Francisco, California, USA
Identifiants
Type de publication
conference paper
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