辫状河三角洲-滨浅湖沉积微相及对油气分布的控制——以二连盆地阿南油田为例  

Sedimentary Microfacies of Braided Delta-Coastal Shallow Lake and Its Control on Hydrocarbon Distribution in Anan Oilfield,Erlian Basin

作　　者：邵先杰[1] 

机构地区：[1]燕山大学,河北秦皇岛064006

出　　处：《新疆石油地质》2007年第6期687-690,共4页Xinjiang Petroleum Geology

基　　金：中国石油天然气股份公司科技攻关项目;二连弱凝胶深部调剖试验(020102-3)资助

摘　　要：根据沉积背景和沉积环境标志的研究,发现阿南地区存在多个煤层、发育直立的植物根茎化石和泥裂构造,地震相中前积结构发育,前缘相中反韵律的分流河口砂坝发育,在半深湖泥岩中浊积岩发育,属典型的辫状河三角洲沉积体系。依据对岩石、测井和地震等微相标志的研究,在阿尔善组和腾格尔组中,划分出了9种微相,其中,滩砂和分流河口砂坝微相油气最为富集,其次为席状砂、浊积岩、水下分流河道、远砂坝和水下溢岸微相。The sedimentary setting and environmental mark study shows that there exist multi-zone coal measures with vertical plant root fossils as well as mud-cracked structure. The seismic facies study indicates that the developed structures include prograding configuration, rhythm-inverted distributary mouth bar on braided delta front and turbidite in bathyal lake mud, belonging to typical braided delta system. Based on the study of lithofacies, log facies and seismic facies, Aershan and Tengger formations can be divided into nine microfacies. In terms of the oil abundance, from high to low, these microfacies are successively beach sand, distributary mouth bar, sand sheet, turbidite, submerged branch channel, distal bar and underwater splay sand.

关 键 词：二连盆地 沉积相 地震相 测井相 三角洲 

分 类 号：TE111.3[石油与天然气工程—油气勘探] TE112.221