Efficient Prediction Of Distribution Of Reservoir Flow Units Using New Developed Software

In order to predict the distribution of flow units, the criteria for identifying flow unit are first established based on core data analysis. Different identification methods may have different criteria, but all these criteria are usually involved with an integrated analysis of multiple reservoir properties, such as lithofacies, porosity, permeability and net thickness. With the aid of plotting software, the distribution of flow units can be mapped using adopted identification criteria. This is often done manually through analyzing the overlapped reservoir property maps.To make such process more objective and efficient, application software was developed with VB programming language. This software integrated GIS control objects of SuperMap, a kind of Geography Information System software. Using this software, an integrated analysis of multiple parameters can be efficiently performed through the overlap analysis, no matter the parameter is in the format of vectorgraph or image. If it is an image, it should be digitized first for analysis.This new software was applied to Weizhou oilfield, and the distribution of reservoir flow units was successfully predicted. In this application, three reservoir properties, porosity, permeability and microfacies, were used for flow unit study. The first two are in the format of vectorgraph and the last is an image. The results show that the software can improve the efficiency of flow unit identification. It also shows that the analysis is more objective and exact. This software is easy to adapt to other situations, just through changing the identification criteria or the number of data/parameters involved.