GUIDELINES FOR PERMEABILITY CURVES MEASUREMENTS AND MODELING

The debate on the energy transition and on methods of mitigating the effects of climate change have been the focus of many researches in recent years. One of the main methods studied to reduce the emission of greenhouse effect gases is the geological storage of CO2 through the injection of this gas in oil reservoirs as an enhanced oil recovery method, in depleted reservoirs, or in deep saline aquifers. Relative permeability is one of the main factors that dictate multiphase flow in a porous medium, being a parameter capable of describing the relative proportion of relative flows during the displacement of fluids in situ. Thus, the accurate characterization of relative permeability is essential for understanding and modeling of the phenomena that occur during the production of hydrocarbons and the injection of CO2 into aquifers. Permeability curves have been the focus of different lines of research from public and private investments in distinct parts of the world, in a way that literary production is remarkably diverse and diffuse. Authors used different methods, starting from different hypotheses and making it difficult to compare and define which method to use in each situation. Through a systematic review of the literature, the objective of this work is to unify the information disseminated in papers published over decades and to compare the different findings so as to create general guidelines for the choice of methods and models to determine the permeability curves according to the different reservoir and aquifer conditions were they have to be applied.