... of seismic focal mechanisms. More techniques exist, and comprehensive reviews of stress determination methods may be found in Amadei & Stephansson (1997), Ljunggren et al. (2003) or Zang & Stephansson (2010). reservoir geomechanics stress component Reservoir Characterization Upstream Oil...

... principal stress direction reservoir geomechanics stress component stress determination determination packer equation Upstream Oil & Gas borehole borehole wall hydraulic testing fracture 7th International Symposium on ln-8ilu Rock SU'ess May 1D-12, 2016, Tampers, Finland Johansson...

... Upstream Oil & Gas inverse problem borehole Reservoir Characterization Corthesy anisotropic rock stress tensor deformability parameter Raasakka doorstopper technique Symposium strain recovery curve Rock stress international symposium reservoir geomechanics stress component...

... of the overburden gravitational stress component and the tectonic stress component. Then, the tectonic stress coefficient in the direction of the maximum and minimum principal stress can be calculated on the base of the rock mechanical experiment parameters and fracturing work data. According to the tectonic stress...

... principal stress Reservoir Characterization orientation hydraulic test interpretation maximum horizontal Upstream Oil & Gas borehole determination principal stress magnitude hydraulic fracturing stress component echelon fracture stress field fracture Magnitude Rock Mech principal stress...

...-mentioned research directly. In fact, the stability of the surrounding rock in the tunnels is primarily influenced by stress components within the tunnel plane. As shown in Figure 10, a cer- tain deflection angle of the stress orientation in the tun- nel plane will produce the concentration stress at dif...

... the accuracy of stress components and assessing the accuracy of the principal stress. Then the system analyses the reliability of results depending on existing databases, the in-situ stress condition and other criteria. The above process is carried out by the system intelligently, and the final results...

... a single stress component. The paper presents a global methodology for evaluation of the most likely natural stress field from in situ test results. One example deals with the case of an underground powerhouse where high horizontal stresses were determined by overcoring tests, which were later confirmed...