特高含水期水淹层渗透率计算方法  

CALCULATING METHOD OF THE PERMEABILITIES FOR THE WATERED-OUT RESERVOIRS IN EXTRA HIGH WATER-CUT PERIOD

作　　者：马宏宇[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2013年第1期170-174,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：在油田特高含水期，储层内部渗透率级差加大，非均质性增强。利用岩心资料分析了特高含水期水淹层孔隙度、渗透率的变化规律及特征，提出正态概率分布函数与岩石物理相结合进行储层分类后建立渗透率模型的办法，并通过分类前后误差的对比分析验证了该方法的适应性。实际资料处理结果表明，该方法能够提高特高含水期储层渗透率的计算精度，为后续加密调整井的开发研究奠定了基础。In the extra high water-cut period of an oil field, the reservoirs are characterized by gradually increased permeability differential and seriously deteriorated heterogeneity. With the help of the core data, the changed laws and characteristics of the porosity and permeability of the watered-out reservoirs in this period are analyzed, the method of the reservoir classification and permeability model establishment is presented by the integration of normal propability distribution function and petrophysical phases. At the same time, through the contrast and analyses of the errors before and after the classification, the feasibility of the method has been verified. The processed results of the actual data show that the method can enhance the calculation precision of the reservoir permeabilities in extra high water-cut period and furthermore furnish the basis for the development researches of the later infilling-adjusting wells.

关 键 词：特高含水期 渗透率 储层分类 正态概率分布 

分 类 号：P631[天文地球—地质矿产勘探]