枚举平衡法在油藏数值模拟初始化中的应用

发布时间：2018-04-27 20:18

本文选题：油藏数值模拟 + 初始化　；参考：《岩性油气藏》2017年06期

【摘要】：油藏数值模拟模型的初始化是油藏数值模拟过程中的重要环节。而常规的平衡法会导致在油层大片连通的区域有完全相同的原始含油饱和度值,这不符合真实的油藏流体分布情况。为提高数值模型的精确度,提出了枚举平衡法进行油藏数值模拟的模型初始化,原始流体饱和度通过三维地质模型的饱和度进行枚举,不再取决于相渗曲线端点值;然后通过相渗曲线端点标定,生成新的相渗曲线;通过毛管压力标定,保证了初始状态时流体饱和度场的平衡。实际应用表明,枚举平衡法能够较好地展示油藏原始含油饱和度的真实分布状态,并减少历史拟合工作量,在油藏数值模拟的实践中有较好的应用效果。
[Abstract]:The initialization of reservoir numerical simulation model is an important link in reservoir numerical simulation process. The conventional equilibrium method will result in the same original oil saturation value in the large connected area of the reservoir, which is not in line with the true reservoir fluid distribution. In order to improve the accuracy of the numerical model, an enumeration equilibrium method is proposed to initialize the model of reservoir numerical simulation. The original fluid saturation is enumerated by the saturation of the 3D geological model and is no longer dependent on the terminal value of the permeability curve. A new phase permeation curve is generated by the end-point calibration of the phase permeation curve and the equilibrium of the fluid saturation field in the initial state is ensured by the capillary pressure calibration. The practical application shows that the enumeration equilibrium method can show the true distribution of the original oil saturation of the reservoir and reduce the workload of historical fitting. It has a good application effect in the practice of reservoir numerical simulation.
【作者单位】：中国石油勘探开发研究院西北分院;
【基金】：国家自然科学基金项目“基于正交匹配追踪算法的相敏关联层析研究”(编号:29932016006)资助
【分类号】：TE319

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