An Integrated Reservoir Simulation System (IRSS)
The Integrated Reservoir Simulation System (IRSS) is a compilation of software and hardware on a single processor, or a cluster of processors, running Linux to solve numerous oil reservoir problems. Multiple reservoir simulations are simultaneously performed in sequential, distributed, or parallel mode. The applications include well placement, design, optimization, economic analysis of chemical flooding projects, sensitivity studies to rank the important factors, and stochastic simulation to gauge the uncertainties. The reservoir simulators incorporated are UTCHEM, ECLIPSE from Geoquest, and CMG-GEM from the Computer Modeling Group. The Matrix Decomposition Method (MDM) and the Sequential Gaussian Simulation module of GSLIB (Geostatistical Software Library) are part of the framework to generate stochastic distributions of reservoir properties. The framework uses two different job schedulers to submit the jobs in sequential, distributed or parallel mode.
There are several Windows-based packages included for post-processing of simulation results as shown in the figures below. An experimental design study is used to generate response surfaces that identify the various factors that cause changes in the responses and also predict these variations in a simple mathematical form. The purpose of Response Surface Methodology (RSM) is to approximate a process over a region of interest, often called the operating region. RSM provides tools for identifying the variables that influence the responses (screening) and building regression models relating the responses to the strategic variables (modeling).