地质与资源2026，Vol.35Issue(2)：170-177,8.DOI:10.13686/j.cnki.dzyzy.2026.02.005
鄂尔多斯盆地重力流沉积类型及识别特征
Sedimentary types and identification characteristics of gravity flow in Ordos Basin:A case study of Chang-6 oil reservoir of Yanchang Formation in Maling-Qiaochuan area
摘要
Abstract
Taking the Chang-6 oil reservoir of Triassic Yanchang Formation in Maling-Qiaochuan area,Ordos Basin,as the research object,supported by petroleum geology and sedimentary stratigraphy,the paper systematically analyzes the gravity flow types,sedimentary marks,sand body distribution characteristics and sedimentary model of oil reservoirs.Based on the drilling data and observation of a large number of cores and thin sections,it is found that the sandy debris flow is in massive structure with floating muddy debris inside.The turbidity current is identified by normal-graded bedding,and density current by ripple bedding.The turbidite center and marginal microfacies,and channel-slump fan sedimentary model are established through further subdivision.The thick massive sand body caused by sandy debris flow is the favorable reservoir facies belt,which can serve as the key horizon for oil and gas exploration in deep water area.关键词
延长组/重力流/砂质碎屑流/浊积岩/沉积模式/鄂尔多斯盆地Key words
Yanchang Formation/gravity flow/sandy debris flow/turbidite/sedimentary model/Ordos Basin分类
天文与地球科学引用本文复制引用
齐诗苇,田亚铭,时孜伟,李继宏,刘志涛..鄂尔多斯盆地重力流沉积类型及识别特征[J].地质与资源,2026,35(2):170-177,8.基金项目
中国石油天然气股份有限公司长庆油田分公司项目"马岭-乔川地区长6砂体结构及成藏主控因素"(17TD0003). （17TD0003）
