Thanks a bunch boss, u too much eh!For petroleum engineering guys: revise the basics of your reservoir engineering (preferably by skimming thru Tarek Ahmad). A good petroleum engineer should be able to play around pressure like a toy, so be sure that 50% of your questions will contain pressure related exercises. Pressure gradients, productivity index, API, decline curve analysis and so on should be in your finger tips. Master the recovery mechanisms with their various xteristics as well as types of oil reservoirs. As usual, porosity, permeability and saturation things are expected. All the best guys!