| Summary: | Face seals failures are one of the main reasons for non-productive time in Schlumberger's down hole tools. The root causes for such failures are not well understood yet. Moreover, these failures are happening in very di erent operating conditions; a face seal on a ESP will work continually for years, a face seal on a logging-while-drilling tool such as Impulse will experience start and stops as well as pressure pulses. Consequently, there is a strong need for a model to help understand the operations of face seals. The starting point for the present work is the model developed by R.F. Salant in 2002-2003. The present work consisted in validating the di erent elements of the model, generalizing the applicability and translating the code from Fortran to Octave/Matlab. The aim of the porting to Octave/Matlab was twofold. Firstly to allow easier model interpretation and development in graphical environment and secondly to provide thecode to software developer in a friendly way.
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