Solvent Retention and Recovery in a Hot Solvent Injection Process

Qiong Wang


This work shows that in a hot solvent injection process, a transition zone is thinner in the middle than sat the top and the bottom.  A moderate elevation of solvent temperature (e.g., from 20°C to 80°C) can enhance an oil production rate by about 3 times. Meanwhile, the SOR is reduced by 53%. Theoretical solvent recovery is about 90%, decreasing with temperature. The oil production rate increases linearly with pay-zone thickness, respectively.