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鄂尔多斯盆地靖安油田上三叠统延长组长6段沉积相研究 预览 被引量:17

Study on Chang 6 Member sedimentary fades of Yanchang Formation in upper Triassk,Jingan Oilfield,Ordos Basin
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摘要 对鄂尔多斯盆地靖安油田上三叠统延长组长6段岩相、沉积微相类型、垂向序列和沉积相格局进行的研究表明,长6段为大型河流入湖卸载的三角洲-湖泊相沉积,并且是一个完整的复合三角洲沉积体,包含了发育齐全的前三角洲、三角洲前缘以及三角洲平原3个亚相。在平面上,三角洲总体表现出向南西方向的不均匀指状进积,形成了鸟足状三角洲;在垂向上,长6 1表现为相对较浅水的三角洲,分流河道最发育,长6 2为相对较深水的三角洲,水下分流河道和河口坝发育。 Lithofacies, sedimentary microfacies type, vertical successions and sedimentary facies pattern were studied in the sixth Member ( Chang 6 ) of Yanchang Formation of upper Triassic, Jin-gan oilfield,Ordos basin. It is realized that the Chang 6 member is the deltaic lacustrine body deposited where large rivers enter into lake and discharge. In fact, it is a full complex delta deposit, which includes such full sedimentary subfacies as prodelta, delta front and delta plain. The delta behaved as unevenly fingering progradation toward southwest on space and produced a so - called high constructive bird feet - like delta, wherever the delta temporally behaved as a relatively shallow delta which has prosperous distributary channel during Chang 61 and a relatively deep delta which has prosperous underwater distributary channel and mouth bar during Chang 62.
作者 兰朝利 何顺利 门成全 Lan Chaoli, He Shunli, Men Chengquan. Faculty of Petroleum and Natural Gas Engineering , China University of Petroleum ( Beijing) , Beijing City, 102249,China
出处 《油气地质与采收率》 CAS CSCD 北大核心 2006年第5期 11-14,共4页 Petroleum Geology and Recovery Efficiency
基金 中国石油天然气集团公司创新基金项目(04E70723)资助
关键词 上三叠统 长6段 沉积微相 三角洲 靖安油田 鄂尔多斯盆地 upper Triassic,Chang 6 Member,sedimentary microfacies,delta,Jingan oilfield,Ordos basin
作者简介 兰朝利,男,讲师,1994年毕业于中国地质大学(武汉)煤田地质与勘探专业,2001年获中国科学院地质与地球物理所地质学专业博士学位,现从事油气藏描述与开发方面的研究。联系电话:(010)89733829。E—mail:lanchaoli@sohu.com.
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