Numerical Simulation of Steam Injection for Heavy Oil Thermal Recovery

The steam injection technology is widely used in heavy oil production. The higher the steam injection rate is, the more beneficial the exploitation of heavy oil is. In this paper, we choose the twodimensional rotation axis symmetry model, using VOF model of steam injection wells, wet steam phase change, transient analysis of influence of different injection pipe string structure in vertical well section during the process of steam injection on steam injection parameters and changes of single and dual steam injection steam injection well bore in steam parameters during the process of steam injection in horizontal wells. The analysis results show that the vertical well steam injection by high vacuum insulated tubing make minimize the dryness of the steam; Toe end dry degree is higher than that of single tube steam injection when horizontal pipe steam injection, which is conducive to the balanced development of heavy oil.