Shahrood University of Technology Journal of Mining and Environment 2251-8592 6 1 2014 12 22 The impact of poor cementing casing damage: A numerical simulation study 41 53 329 10.22044/jme.2014.329 EN M. Hemmatian School of Mining, Petroleum & Geophysics Engineering, University of Shahrood, Shahrood, Iran B. Tokhmchi School of Mining, Petroleum & Geophysics Engineering, University of Shahrood, Shahrood, Iran V. Rasouli Department of Petroleum Engineering, Curtin University of Technology, Perth, Australia R. Gholami Department of Chemical and Petroleum Engineering, Curtin University of Technology, Sarawak, Malaysia Journal Article 2013 07 19 A good knowledge of the parameters causing casing damage is critically important due to vital role of casing during the life of a well. Cement sheath, which fills in the gap between the casing and wellbore wall, has a profound effect on the resistance of the casing against applied loads. Most of the empirical equations proposed to estimate the collapse resistance of casing ignore the effects of the cement sheath on collapse resistance and rather assume uniform loading on the casing. This paper aims to use numerical modeling to show how a bad cementing job may lead to casing damage. Two separate cases were simulated where the differences between good and bad cementation on casing resistance were studied. In both cases, the same values of stresses were applied at the outer boundary of the models. The results revealed that a good cementing job can provide a perfect sheath against the tangential stress induced by far-field stresses and reduce the chance of casing to be damaged. https://jme.shahroodut.ac.ir/article_329_0a09580d4926a35587f46bee62f567f3.pdf