华庆地区延长组长63砂层组沉积微相特征研究

在调查区域地质概况和前人研究成果的基础上,通过岩心的详细观察,岩芯镜下照片的分析;采用沉积学原理和方法,主要是利用沉积相标志,结合测井资料综合分析,在华庆地区上三叠统延长组长63砂层组中,划分出了水下分流河道微相、分流问湾微相、浊积水道砂体微相和深湖泥微相4种微相,对单井沉积微相进行了综合分析,分析了连井的沉积微相和沉积微相平面的平面展布特征,绘制了沉积微相连井剖面图和沉积微相平面展布图,目的在于了解单砂层展布规模和相带分布.通过对沉积微相的研究,为该区下一步油气勘探部署提供依据.

Sedimentary microfacies characteristics of the study in Huaqing area Yanchang 63 sand group

Regional geology in the investigation and based on the results of previous studies, through detailed observation of the core,including the core microscopic analysis of pho- tographs and core photographs,adopt principles and methods of deposition, mainly using sedi-mentary facies flag with logging,a comprehensive analysis of logging data in Huaqing upper Triassic Yanchang 63 sand group,a division of a subaqueous distributary channel facies,split between the bay microfacies,turbidite channel sand facies and deep lake mud facies four kinds of micro-phase,single weU microfacies conducted a comprehensive analysis, analysis of even the wells and sedimentary facies plane of sedimentary facies distribution characteristics, compilation of sedimentary and sedimentary profiles connected wells micro-phase plane distribution map, aims to understand the scale and spread single sand facies distribution.By microfacies study of Ordos basin Huaqing upper Triassic Yanehang petroleum exploration deploy next 63 to provide a more adequate basis.