By applying the cohesion and internal friction angle parameters derived with the JPW criterion (Desk two) into the Mohr-Coulomb model, the resultant minimal Risk-free density polar plot is created as illustrated in Determine ten. This visualization employs a chromatic development from deep blue to purple to denote raising collapse https://louiskhcxs.wikigdia.com/7998108/top_guidelines_of_wellbore_stability_in_drilling