Rock Type and Permeability Prediction using Flow Zone Indicator with an application to Berkine Basin (Algerian Sahara)

摘要

Prediction of permeability in un-cored intervals is necessary to developing an effective reservoir characterization program. In this paper routine core analysis and well log data of an actually existing shaly sand reservoir in the Berkine Basin (Algerian Sahara) were used to develop permeability correlation using a Hydraulic Flow Unit approach (HFU). The core data were statistically treated for identification of Hydraulic Flow Units. This involves the calculations of Reservoir Quality Index (RQI) and Flow Zone Indicator (FZI). Obtained results show that five HFUs are identified from core data and each unit has its own FZI. A correlation between FZI calculated from core data and that obtained from well log data is developed for estimating permeability in un-cored intervals.