论文部分内容阅读
在岩心观察的基础上,综合运用地质、测井和地震资料,从单井相分析入手,通过连井对比将剖面扩大到全区范围,详细研究了百21井区夏一段储层的沉积微相类型,重点分析了主要含油层的沉积微相平面展布特征。研究认为:该区二叠系夏一段属冲积扇扇中和扇缘亚相沉积,主要微相类型是扇中的辫状水道和漫溢砂;夏一段冲积扇扇体具有东西2个扇叶的特点。其中,西部扇叶与东部扇叶相比,规模大、延伸远、辫状水道和漫溢广泛发育,局部发育扇中泥石流。
On the basis of core observation, the geologic, well logging and seismic data are comprehensively used. Based on the analysis of single-well facies, the cross-section is extended to the whole area through the comparison of continuous wells. The sedimentation micro- This paper focuses on the analysis of the distribution of sedimentary microfacies in major oil reservoirs. It is concluded that the Xiayi section of Permian in this area belongs to the alluvial fan and fan margin subfacies, and the main microfacies are braided channels and diffuse sand in the fan. The alluvial fan in summer has alluvial fan with two blades Features. Among them, the western leaf compared with the eastern leaf, large-scale, extended far, braided channel and overflow widely developed, locally developed fan debris flow.