Calibration of wire-line mechanical properties using core measurements results for Fula oilfield case study

Abstract

This paper presents a geo-mechanical model for Fula oil field formation in Muglad basin in Sudan. The static mechanical rock properties measured on rock samples were calibrated with the dynamic wire line data run in the cored wells; empirical core-log relationships were developed to determine the formation mechanical properties and to estimate the critical formation drawdown pressures. The paper also looks at the stresses and loads induced near the wellbore. The calibrated log properties were used with some correlations to estimate formation strength and failure conditions to get reasonable results for the formations under study. Initial analysis indicates that a small amount of sand will be produced under any conditions; generally sand will be increased if the flow rate reaches a critical value