Numerical simulation of reservoir parameters’ synergetic time-variability on development rules

Abstract

Time variability of reservoir parameters in water flooding has an effect on oilfield development rules. Meanwhile, time variability of different reservoir macro-parameters has certain synergetic relationship with each other. Based on microscopic network simulation and reservoir numerical simulation, a new simulation method is presented, which can describe the influence of reservoir parameters’ synergetic time-variability on oilfield development rules both in macroscopic and microscopic scales. Microscopic network simulation can effectively simulate the impact of micro-parameters’ variation on macro-parameters, thus a comprehensive model is built to reflect the variability of reservoir parameters. On the basis of considering time variability of porosity, permeability, and relative permeability in water flooding, an improved reservoir numerical simulator is established, which can effectively simulate the effect of reservoir parameters’ synergetic variation on oilfield development rules.

The numerical simulation study on the dynamic variation of residual oil with water drive velocity in water flooding reservoir

“…Ju et al's (2005) research shows that in the process of oilfield water drive development, with the increase of water cut, the content of light components in crude oil decreases, resulting in the increase of crude oil viscosity to three times the initial state. Based on the microscopic grid and numerical simulation technology, Hou et al (2016) proposed a new simulation method, which can consider the changes of porosity, permeability, and relative permeability with time in the process of water drive. A comprehensive reservoir simulation technique based on time-varying petro-physical parameters characterized by effective displacement flux was proposed by Zhao et al (2022).…”