In this paper, the authors derive and implement an interwell numerical simulation model (INSIM) that can be used as a calculation tool to approximate the performance of a reservoir under waterflooding. In INSIM, the reservoir is characterized as a coarse model consisting of a number of interwell control units, and each unit has two specific parameters: transmissibility and control pore volume. INSIM is applied to perform history matching for parameter estimation and to infer interwell connectivity and geological characteristics.
Introduction
History matching with a reservoir simulator is the most common way to condition rock-property fields to production data. However, production data are never sufficient to resolve the reservoir properties (e.g., gridblock permeabilities), and few assisted-history-matching tools exist in commercial reservoir simulators.
