Geomechanical model and wellbore stability analysis utilizing acoustic impedance and reflection coefficient in a carbonate reservoir

Abstract One of the most important oil and gas drilling studies is wellbore stability analysis. The purpose this research to investigate from a different perspective. To begin, vertical stress pore pressure were calculated. lowest maximum horizontal calculated using poroelastic equations. strike-slip normal fault regime was shown by in situ values. 1-D geomechanical model utilized failure mechanisms safe mud window estimation Mohr–Coulomb criterion. Using density sonic (compressional shear slowness) logs, acoustic impedance (AI) reflection coefficient (RC) logs determined subsequently. combination layers with AI indicates positive negative values for RC, zones prone or breakout, weight these should be increased, according interpretation RC readings results model. Furthermore, almost constant log close zero are stable as homogeneously lithologically, but have lower tensile threshold than intervals that sensitive failure, if increases, susceptible breakdown. Increased porosity values, which directly correspond inversely threshold, cause decrease homogenous zones, no effect on behavior log. This approach can determine potential kick, loss, short time.