Elasto-Plastic Analysis on Wellbore Stability under the Condition of Permeation
Maintaining the wellbore stability is a key factor for oil and gas drilling operations. In this paper, sock is regarded porous medium. Crevice pressure, effect of permeation and SD effect are considered. The elastic and plastic stresses around the wellbore sock were analysed according to MVM failure criterion. Distribution of stress and displacement was obtained, which can provide theory reference for the wellbore stability.
Jingtao Han, Zhengyi Jiang and Sihai Jiao
J. B. Sang et al., "Elasto-Plastic Analysis on Wellbore Stability under the Condition of Permeation", Advanced Materials Research, Vols. 156-157, pp. 1292-1296, 2011