鄂尔多斯盆地镇泾油田长8段沉积相研究  

RESEARCH ON SEDIMENTARY FACIES OF THE CHANG-8 MEMBER OF THE YANCHANG FORMATION IN ZHENJING OILFIELD,ORDOS BASIN

作　　者：金龙[1] 丁晓琪[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都610059

出　　处：《新疆地质》2009年第2期160-163,共4页Xinjiang Geology

摘　　要：鄂尔多斯南部镇原泾川地区延长组长8段沉积相已经多年资料累积和研究.在岩心观察、测井资料及前人研究成果基础上,通过对大量物性资料、测井资料统计分析,利用岩电关系,结合测井曲线形态和组合特征,划分测井相,指出长8段沉积相类型主要是三角洲前缘亚相,可进一步细分为水下分流河道、水下天然堤、水下决口扇、河口坝、水下分支间湾5种微相类型,并对各微相类型沉积特征和剖面结构进行讨论,预测了沉积相平面展布和沉积模式及有力勘探区域.The Chang-8 Member of the Yanchang Formation in south of Ordos Basin Zhenyuan--Jingchuan area have been lots of years data of accumulate and depth study, On the base of core observation, logging data and the studied results of former geologists, and through statistical analysis of petrophysical data and logging data, Then, use logging curves to classify logging facies based on the lithology-electric property relation. According to the upper research results, the sedimentary facies is determined to be the front-delta deposition of braided river delta deposits, and five microfacies types are recognized including subaqueous distributary channel,subaqueous natural barrier, subsea crevass-splay, mouth-bar, subaqueous interdistributary embayment. The depositional eharacterisytics and the structure of microfacies types in sections are discussed, and the lateral distribution of the sedimental facies and the sedimentation model are predicted.

关 键 词：镇泾油田 长8段 测井相 沉积相 沉积模式 

分 类 号：P618.13[天文地球—矿床学]