Borehole Stress

The Borehole Stress sub-strip (advanced stress & failure > Borehole Stress) is used for detailed analysis of borehole stress and failure. With the Borehole Stress sub-strip you can predict wellbore failure characteristics. It requires knowledge of the full in-situ stress tensor. Using the sub-strip, you can model arbitrarily inclined stresses, and include 3D failure models such as the modified Lade criterion or Wiebols and Cook, in addition to more traditional 2D models such as Mohr-Coulomb.

You can evaluate stress and failure either in the rock surrounding the borehole or at the borehole wall, and select between log mode and depth mode. When evaluating conditions at the borehole (At the Wall), it is possible to consider a compressive or a tensile failure condition. Advanced models, such as thermal effects and anisotropic strength are also available using the elastic model.