Due to the severe heterogeneity of carbonate reservoirs, the traditional reservoir engineering methods for waterflooding performance forecast, mainly including the material balance equation, waterflooding characteristic curve and production decline curve, suffer from less reliability. The fine-scale reservoir numerical simulation is extremely time-consuming, because petrophysical properties in carbonate geological models change so drastically. To predict the development performance rapidly, a new method for large-scale thick carbonate reservoirs is proposed. By combining the geological characteristics and dynamic performance of each well, vertical stacking pattern of the reservoir are classified, and also good insights into the lateral distribution of typical stacking patterns are also gained. The stacking pattern distributions are further projected onto the waterflooding well pattern, followed by rapid evaluation of production and injection rate of every block. Based on the simulation results for typical stacking pattern blocks, type curves of water flooding on different stacking pattern reservoirs are workout. Then the waterflooding performance for the whole carbonate reservoir is step-by-step quickly predicted at a constant liquid rate so as to keep the reservoir injection-production balance with voidage replacement ratio 1. Finally, a large-scale thick porous carbonate reservoir in the Middle East is taken as an example to show the workflow of the proposed method. The accuracy is further validated by comparing the predicted results from numerical simulation, indicating that the proposed method can save a lot of calculation time while ensuring the accuracy of performance forecast.

由于碳酸盐岩储层非均质性严重，传统的储层注水性能预测工程方法，主要包括物质平衡方程，注水特征曲线和产量递减曲线，可靠性较差。精细规模的储层数值模拟非常耗时，因为碳酸盐地质模型中的岩石物理特性发生了巨大变化。为快速预测开发效果，提出了一种新的大型厚碳酸盐岩油藏开发方法。通过结合每口井的地质特征和动态性能，对储层的垂直堆积模式进行分类，并对典型的堆积模式的横向分布也有很好的认识。将堆积模式分布进一步投影到注水井模式上，然后快速评估每个区块的产量和注入速率。根据典型堆积模式区块的模拟结果，可以得出不同堆积模式油藏中水驱的类型曲线。然后，以恒定的液速快速逐步地预测整个碳酸盐岩油藏的注水性能，以保持油藏注水与采出孔隙率的比率达到平衡。最终，在该储层中建立了一个大型的稠密多孔碳酸盐岩油藏。以中东地区为例，说明了该方法的工作流程。通过比较数值模拟的预测结果进一步验证了准确性，