ACCURATE WELL-BORE HYDRAULICS SIMULATION CONSIDERING NON-ISOTHERMAL AND LIQUID-SLIPPAGE PHENOMENA FOR MULTIPHASE FLOW IN OIL AND GAS WELLS

A review of studies relevant to describing the non-ideal behavior encountered in oil and gas flow through wells is presented. The empirical prediction of liquid holdup and relaxation in time of gas separation from liquid phases are considered as mechanisms for explaining the non-ideal behavior. Several features in modeling multiphase flow are discussed. The details of interest are elaborated for each reviewed approach and summarized. An application is presented in order to illustrate the holdup and relaxation profiles for vertical oil wells. The results are obtained by applying a novel formulation for liquid holdup modeling.