Burst-Induced Stresses in Cemented Wellbores

摘要

This paper presents the results of a finite element study of the resistance to burst pressure. Results from the 2D model quantify the effects of various mechanical properties of cement on a cemented wellbore. Coparsion of the predicted stresses with experimental results demonstrated that ductile cement is far less likely to crack radically from high internal burst pressures than a brittle cement. It is demonstrated that the in-situ formation stresses acting on the cemented wellbore greatly affect the burst resistance of the cemented wellbore.