鄂尔多斯盆地七里村油田柴上塬区隔夹层分布特征

Distribution characteristics of interlayer in chaishangyuan area of qilichun oilfield,Ordos Basin

通过岩心资料、测井资料和生产资料的分析,对研究区长6储层的隔夹层进行识别、统计分析,认为相对柴上塬区其他小层,主力产层长614和长622小层上部隔层比较发育,横向连通性较好,小层内夹层较少,夹层分布频率和分布密度都比较低,钻遇率较低,从隔夹层的分布与产量来看,随着小层上部隔层厚度的增加,小层内平均初月产变高,随着层内泥质夹层的发育,单层内平均初月产减少。

Based on the analysis of core data,well logging data and production data,the interlayer of Chang 6 reservoir in the study area is identified and statistically analyzed.Compared with other small layers in chaishangyuan area,the upper interlayer of main production layers Chang 614 and Chang 622 is relatively developed,with better horizontal connectivity,less interlayer in the small layer,lower interlayer distribution frequency and density,and lower drilling rate According to the distribution and production of interlayer,with the increase of the thickness of the upper interlayer,the average initial monthly production in the interlayer becomes higher,and with the development of the muddy interlayer,the average initial monthly production in the single layer decreases.