Heat losses to over/underburden play an important role in determining the efficiency of a thermal oil recovery process such as cyclic steam stimulation. Thermal conductivity is a key parameter for evaluating heat losses. Since there is generally little information concerning in situ thermal conductivity values, it is often assumed in reservoir simulation models that the reservoir and its over/underlying formations possess the same value of thermal conductivity. If the over/underlying formations possess significantly higher values of thermal conductivity compared to the reservoir, the heat losses will be underestimated in calculations based on uniform thermal properties. Systematic procedures to estimate thermal conductivity values from temperature logs and core measurements are presented in this paper and applied to field and laboratory data.

You can access this article if you purchase or spend a download.