Invasion-Based Method For Estimating Permeability From Logs
M.E. Semmelbeck, J. Dewan, S. Holditch · 1995
Summary. We have developed a new method of estimating permeability from logs. Our method, called PermLog, is mechanistic rather than empirical and does not require extensive (and expensive) core analysis for calibration. PermLog is based on modeling filtrate invasion from the time a zone is penetrated until it is logged. This method provides reasonably good estimates of permeability in moderate permeability formations. Similar methods applied to time-lapse logging have been presented by Tobola and Holditch and Yao and Holditch. Our method has been improved over these earlier works in two significant ways. First, our method is applied to the prediction of new generation array induction logs and does not require multiple