International records / Internet Archive

Deriving Pseudo-Static Elastic Moduli from Dynamic Elastic Logs: A Wellbore Stability Analysis in OSA Field, Niger Delta, Nigeria

The problematic effect of sonic logs on the prediction of wellbore stability in the Niger Delta is that accurate predictions are usually compromised by dynamic elastic properties that excessively predict the stiffness of the rock and cause inaccurate estimates of the stress and failure of the rock. This study aims to obtain trustworthy pseudo-static elastic moduli from dynamic elastic well logs using wellbore stability in the OSA Field, Niger Delta, Nigeria. Modulus of Dynamic Young and Poisson ratio values of Dynamic Young that came out of dipole sonic and density logs were reduced to pseudo-…