M6油藏注气开发数值模拟研究

Numerical Simulation of Gas Injecting Development of M6 Oil Reservoir

针对M6油藏注气驱可行性评价研究项目,开展注天然气、烟道气、N2和CO2等提高采收率油藏数值模拟研究,为M6油藏早期注伴生气补充能量、实施混相驱提供参考依据和技术参数。首先对M6油藏的流体高压PVT试验数据进行拟合计算,确定了适合描述该油藏流体相态行为的流体组分特征参数。利用建立的三维地质模型,对储量进行了拟合,然后对补充能量、驱替方式、气水交替注入及注入段塞数目进行了论证,为该油田的注气开发提供理论依据。

Aiming at M6 oilfield gas injecting developing feasible item, the article carries out numerical simulation research of injecting natural gas,flue gas,N2,CO2 for enhancing recovery ratio,gives theory and technical parameter for M6 oil reservoir supplementary energy by injecting gas early and carrying out miscible driving feasibility.Firstly, the paper makes the fitting calculation using the PVT experiment data of M6 oil reservoir with high fluid pressure, and identifies the fluid component characteristic parameters ,which can describe the phase behavior of oil reservoirs.The three-dimensional geological model is built.Then,matching the oil reservoir geologic reserves ,proving energy supplying, driving style, slug number of gas and water alternate injecting ,the study results provide a reliable foundation for the oil reservoir development.