Graphical Analysis–Based Elastoplastic Solution for Wellbore Stability Problem in Hoek–Brown Rock under Moderate Nonhydrostatic Far-Field Stress and Undrained Conditions

Abstract

AbstractA semi-analytical solution is proposed for evaluating the stability of an impermeable wellbore in a rock formation that obeys the Hoek–Brown failure criterion in a nonhydrostatic stress field. The solution is derived within the framework of a ...