坪北油田延长组长6油组储层层内非均质性研究

Reservoir heterogeneity of the Chang-6 pay sets of the Yanchang Foramtion in the Pingbei Oil Field

在坪北油田应用岩心观察、岩心分析化验资料、测井解释成果、测试及开发动态等方面的资料分析长6储层的非均质性,重点解剖层内非均质性特点,总结了正韵律,反韵律,复合韵律和交互韵律4种类型的层内非均质性。夹层分布较广泛,加剧了层间非均质性。

The reservoir heterogeneity of the Chang-6 pay sets of the Yanchang Foramtion in the Pingbei Oil Field is examined on the basis of the data of cores, well logging interpretation, experimental analysis and exploitation regimes. Four types of intrastratal heterogeneity are summaried： normal rhythms, reversed rhythms; composite rhythms and alternating rhythms. The widespread occurrence of interbeds results in the increase of the intrastratal heterogeneity.