摘要
上三叠统延长组长63油层是鄂尔多斯盆地华庆地区重要的勘探目的层。笔者从取心井岩心与测井资料入手,通过对长63油层沉积相精细研究,认为长63油层为三角洲前缘湖底滑塌浊积扇沉积。按沉积特征可进一步划分出内扇、中扇和外扇3个亚相及若干微相,并对各亚相、微相特征进行了描述。其中以中扇分支水道微相最为发育,占整个浊积扇面积的80%。在此基础上,对有利沉积微相、沉积相平面展布规律及沉积模式进行了预测。
The Chang 63 reservoir in the upper Triassic Yanchang formation is an important exploration target in the Huaqing area,Ordos Basin. The sedimentary facies of the Chang 63 reservoir has been studied meticulously based on core data and log data. It is recognized that the Chang 63 reservoir belongs to delta front sublacustrine slump turbidite fan deposition,which can be further divided into 3 subfacies of inner,middle and outer fans and several microfacies according to sedimentary characteristics. The distributary channel microfacies of the middle fan were most developed,covering 80% of the total turbidite fan area. On this basis,this paper predicts favorable sedimentary microfacies distribution and sedimentation model.
出处
《特种油气藏》
CAS
CSCD
2010年第5期57-59,共3页
Special Oil & Gas Reservoirs
基金
中国石油天然气股份有限公司长庆油田分公司(勘探开发研究院)委托长江大学进行的专题研究"华庆地区元284-白281井区长63储层分类评价及单井产能预测研究"
关键词
滑塌浊积扇
沉积相
沉积模式
鄂尔多斯盆地
华庆地区长63油层
slump turbidite fan
sedimentary facies
sedimentation model
Ordos basin
Chang 63 reservoir in the Huaqing area
