Effect of saturation kinds in thermal and mechanical stresses due to laser perforating in hydrocarbon reservoir with numerical method

Laser perforating in rocks is a very complex phenomenon that its performance depends on many factors. Since it’s not possible to consider all of these factors in laboratory, numerical modeling is used. In this study, a finite element code (FEM) have been taken to model the thermal and mechanical stresses induced by laser drilling ND:YAG in the hydrocarbon reservoir rock samples. For this purpose the software ABAQUS was used to analyze the thermal and mechanical stresses induced by laser. It is found that Numerical models, show good agreement with the actual observation for holes with diameter of 2 millimeter. In addition, the larger the diameter of the hole is, the vaster the effective zone of stress concentration is. Therefore fracturing occurs in larger zone around the hole.Laser perforating in rocks is a very complex phenomenon that its performance depends on many factors. Since it’s not possible to consider all of these factors in laboratory, numerical modeling is used. In this study, a finite element code (FEM) have been taken to model the thermal and mechanical stresses induced by laser drilling ND:YAG in the hydrocarbon reservoir rock samples. For this purpose the software ABAQUS was used to analyze the thermal and mechanical stresses induced by laser. It is found that Numerical models, show good agreement with the actual observation for holes with diameter of 2 millimeter. In addition, the larger the diameter of the hole is, the vaster the effective zone of stress concentration is. Therefore fracturing occurs in larger zone around the hole.