作　　者： ; ; ; ;

机构地区： 中国石油化工集团公司

出　　处： 《重庆科技学院学报（自然科学版）》 2010年第1期23-26,44,共5页

摘　　要： 在准噶尔盆地南缘中段,综合利用地面露头、钻井取心、测井相、区域沉积背景、气候条件及构造特征等资料,识别出研究区古近系-新近系发育冲积扇、辫状河、辫状河三角洲、湖泊4种沉积相类型。分析研究了各种沉积相的岩性特征、沉积构造和沉积相的垂向演化序列。并以安5井紫一段为例,阐述了研究区主要的沉积相类型,即以辫状河三角洲前缘沉积和滨浅湖沉积为主,说明了在地层沉积演化过程中各种沉积相形成的主要原因。 In the middle segment of the southern margin of Junggar basin, according to available data of outcrops observation,core description,electrofacies,depositional setting, climatic condition and structural feature,four types of sedimentary facies are identified,which include the alluvial facies,braided river facies,braided-delta facies and lacustrine facies.Their lithologic features, sedimentary structures and vertical evolution sequences are analyzed in detail.And take the E 1-2z1 of Well An-5 for example, elaborated the main types of sedimentary facies in the study area, which is sediment of frontal braid river delta and shore-shallow lacustrine, and illustrated the main cause of sedimentary origin during the evolutionary process of sedimentation.

关 键 词： 古近系 新近系 沉积相

领　　域： [石油与天然气工程]