Modeling Transient Flow in CO2 Injection Wells by Considering the Phase Change

A transient model to simulate the temperature and pressure in CO2 injection wells is proposed solved using finite difference method. The couples variability of properties conservation laws. maximum error between simulated measured results 5.04%. case study shows that phase state primarily controlled by wellbore temperature. Increasing or decreasing rate contributes obtaining supercritical state. density can be ignored when low, but for a high rate, ignoring this may cause considerable errors profiles.