阿尔及利亚某油田富气混相驱数值模拟研究

混相驱数值模拟是验证室内实验结果以及开展敏感性分析、注入方案优化设计的重要手段。油藏流体模拟和长细管、试验井组的混相模拟结果与室内实验结果较为吻合，确定的液化石油气和天然气最小混相组成MMC(37.1∶62.9)在油藏条件下能达到混相状态，经压力、温度以及注入参数的敏感性分析，在Ⅳ区推荐交替注入方式（周期半年），累计混相段塞大小0.1PV，注Ⅱ、Ⅲ层；采Ⅰ、Ⅱ、Ⅲ层。

NUMERICAL SIMULATION OF THE RICH GAS MISCIBLE FLOODING IN ALGER OILFIELD

Numerical simulation is an important method to verify the results of indoor test of miscible flooding，to analyze the sensitivity and to optimize the injecting program.Results of the numerical simulation of reservoir fluids and miscible simulation of long-tube and well group are consistent to the indoor experimental results.The result of numerical simulation shows that the MMC，composed of GPL and gas with a mol proportion of 37.1∶62.9,can be miscibled with crude oil under the condition of reservoir，which is coincident with the result of indoor experiment.Based on the analysis of pressure，temperature and sensitivity of injecting parameters，WAG is recommended in sector Ⅳ( half a year).The miscible plug will be cumulatively up to 0.1PV,and production is performed in the layer of Ⅰ,Ⅱ and Ⅲ and layer Ⅱ and Ⅲ are injected.