复杂断块油藏原始含油饱和度场分布模型研究

发布时间：2018-03-08 03:25

本文选题：油藏原始含油饱和度场　切入点：束缚水饱和度　出处：《特种油气藏》2017年01期 　论文类型：期刊论文

【摘要】：针对复杂断块油藏受储层非均质性、孔隙结构差异及流体毛管力等因素影响,导致原始含油饱和度分布空间差异难于准确表征的问题,基于岩样原始含油饱和度恢复资料,通过分析原始含油饱和度、束缚水饱和度对应毛管压力端点值与储层特征参数的相互关系,构建了原始含油饱和度、毛管压力端点值与储层流动区域指数、油柱高度的关系式,考虑油藏三维空间孔渗分布规律,建立了随储层特征参数变化的油藏原始含油饱和度场分布模型。研究结果表明,文中方法计算的开发早期井原始含油饱和度与测井解释结果绝对误差小于0.03。研究成果对精细表征复杂断块油藏原始含油饱和度场随储层空间变化的差异有重要意义。
[Abstract]:The complex fault-block reservoir is affected by the heterogeneity of reservoir, the difference of pore structure and the capillary force of fluid, which makes the spatial difference of original oil saturation difficult to be accurately characterized. Based on the original oil saturation of rock sample, the original oil saturation is restored. By analyzing the relationship between the original oil saturation, the irreducible water saturation corresponding to the capillary pressure endpoint value and the reservoir characteristic parameters, the relationship between the original oil saturation, the capillary pressure endpoint value and the reservoir flow area index, the oil column height, the relationship between the original oil saturation, the capillary pressure endpoint value and the oil column height are established. Considering the distribution of pore and permeability in three dimensional reservoir, the distribution model of original oil saturation field with the change of reservoir characteristic parameters is established. The results show that, The absolute error between the original oil saturation and the log interpretation results calculated by this method is less than 0.03. The research results are of great significance for the fine characterization of the difference between the original oil saturation field of complex faulted block reservoir and the spatial variation of the reservoir.
【作者单位】：中国石油冀东油田分公司;
【基金】：国家科技重大专项“渤海湾盆地黄骅坳陷滩海开发技术示范工程”(2011ZX05050)
【分类号】：P618.13;TE327

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