作　　者： ; ; ; ; (丁洁荧）; (陈叙安）;

机构地区： 中国石油化工集团公司

出　　处： 《石油地质与工程》 2015年第4期1-4,153,共5页

摘　　要： 综合利用岩心、钻井、测井、地震资料,开展春光探区沉积相研究,确定研究区发育扇三角洲-湖泊、辫状河三角洲-湖泊、冲积扇-辫状河和曲流河-曲流河三角洲等4种沉积体系。在层序地层格架下,结合春光探区各层系古地貌特征研究,认为古地貌控制了各层系沉积体系展布特征,在此基础上明确了春光探区沉积演化特征,确定了各层系有利沉积相带。结合春光探区油气成藏特征,最终确定了新近系沙湾组一段的冲积扇沟谷砂体、沙湾组河道砂体侧缘尖灭带、古近系滩坝砂体和白垩系扇三角洲地层超覆/剥蚀带是有利勘探区带。 Through comprehensive utilization of core,drilling,logging and seismic data,the research of sedimentary facies of spring exploration area in Chunguang oilfield has been carried out,and four kinds of sedimentary systems,namely fan delta-lacstrine,braided river delta-lacustrine,alluvial fan-braided river and meandering river-meandering river delta have been determined.Under a sequence stratigraphic framework,in combination with paleo geomorphology characteristics of exploration area in Chunguang oilfield,it is believed that the distribution characteristics in each series of strata of sedimentary system are controlled by paleo geomorphology.On the basis of this,the sedimentary evolution characteristics of exploration area in Chunguang oilfield has been made clear,and then the favorable sedimentary facies belt for each series of strata has been determined.Combining with characteristics of hydrocarbon accumulation of exploration area in Chunguang oilfield,gulch sand bodies of alluvial fan in first member of Neogene Shawan formation,lateral pinchout belt of Shawan river channel sand body,Paleogene beach-bar sand body and cretaceous fan-delta stratigraphic onlap/denudation zone are favorable exploration zone.

关 键 词： 准噶尔盆地 春光油田 沉积体系 古地貌 沉积演化 沉积相带 岩性地层油藏

领　　域： [天文地球] [天文地球]