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对镇277井区延10储层非均质性进行深入剖析,为该油田开发技术政策的探索提供依据。利用钻、测、录井等资料进行综合分析。镇277区延10储层夹层密度平均24.59%,夹层频率平均0.07条/米,层内平均级差、突进系数、变异系数分别为3.45,1.31,0.37。层间渗透率级差、突进系数、变异系数分别为3.51、1.71、1.12,隔层厚度平均达8 m。储层主要发育的孔隙类型有粒间孔9.32%,溶孔1.76%(主要为长石溶孔、岩屑溶孔,各占1.46%、0.30%),喉道平均半径为1.4μm。镇277区多属于复合韵律油层,延10储层应属于均质-弱非均质储层,延103的非均质性较延101和102的弱。延10储层主要发育的孔隙类型有粒间孔,属中喉道级别,孔喉关系组合主要为中孔中喉型。
In-depth analysis of Yan 10 reservoir heterogeneity in the 277 well area of the town provides the basis for exploration of the technical policy of the oilfield development. Use drilling, testing, logging and other data for a comprehensive analysis. The interlayer density of Yan 10 reservoir in the 277 area is an average of 24.59%, the average interlayer frequency is 0.07 / m, the average intraplate level difference, the coefficient of variation and the coefficient of variation are 3.45,1.31 and 0.37 respectively. Interlayer permeability level difference, coefficient of variation, coefficient of variation were 3.51,1.71,1.12, the thickness of the average compartment up to 8m. The major pore types of reservoirs are intergranular pores 9.32%, dissolved pores 1.76% (mainly feldspar dissolved pores and cuttings dissolved pores, accounting for 1.46% and 0.30% respectively), and the average radius of throat is 1.4μm. Most of the 277 area belongs to the compound prosodic reservoir. The reservoir of Yan 10 should belong to homogeneous-weak heterogeneous reservoirs. The heterogeneity of 103 is weaker than the extended ones of 101 and 102. The major pore types of Yan 10 reservoir are intergranular pores, belonging to the middle throat level. The pore-throat relationship is mainly composed of mesopore mid-throat.