화학공학소재연구정보센터
Journal of Canadian Petroleum Technology, Vol.45, No.12, 6-9, 2006
Well under steam stimulation structural integrity of casing and cement annulus in a thermal
Steam stimulation is one of the viable methods to extract heavy oil for oil sand reservoirs. In this thermal process, the injection well is subjected to high temperatures. Numerical simulations were used to investigate the structural integrity of the well in such a high temperature environment. In this study, stresses in the metal casing, cement annulus and surrounding shale formation were examined in detail to evaluate if the induced stresses exceed the material strengths under varying boundary conditions. These include the effect of heating rate; poor cement and shale formation properties.