A Novel Approach to Initialize a 3D Dynamic Model Using Saturation HeightModelling

摘要

Saturation Height Model (SHM) definition is a primary activity for estimating volume of hydrocarboninitially in place. SHM describes the variation of the water saturation (SW) as a function of the main rockproperties (porosity and permeability), the fluid properties (density and interfacial tension), the rock-fluidinteraction (wettability) and the distance from free water level. Algorithms defining these models can bedirectly implemented into 3D reservoir modelling for continuous SW profile calculation, once the inputproperties have been propagated. The computed SW honors the saturation profiles at wells and its variationin the inter-wells space is driven by the distribution of input properties. Conversely, most used commercialplatforms for dynamic simulation do not accept equations for saturation calculation. We propose a methodto initialize a 3D dynamic model in a way consistent with the 3D static one. Consistency of the definedreservoir model, and relevant estimate of volume in place, can be verified after field production start-upthrough the behavior of production wells.