海拉尔盆地贝西斜坡多级坡折带对油气圈闭的控制作用  

Controls of Multistage Slope Breaks on the Hydrocarbon Traps in Beixi Slope of Hailaer Basin

作　　者：王夏斌[1] 姜在兴[1] 袁帅[2] WANG Xiabin;JIANG Zaixing;YUAN Shuai(Energy Institute, China University of Geosciences(Beijing),Beijing 100083,China;Dongsheng Jinggong Oil Development Ltd. Shengli Oilfield, Dongying 257000,China)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石化胜利油田东胜精攻石油开发有限公司,东营257000

出　　处：《高校地质学报》2016年第2期360-367,共8页Geological Journal of China Universities

基　　金：国家科技重大专项(2011ZX05009-002)

摘　　要：坡折带对陆相湖盆岩性地层圈闭的发育具有控制作用。海拉尔盆地贝西斜坡具有坡折带地貌特点,研究其特征和成因以及对沉积相和岩性地层圈闭的控制模式对该区的下步勘探具有重要意义。根据贝西斜坡坡折带的成因机制,将其划分为断裂坡折、挠曲坡折、沉积坡折和侵蚀坡折。根据坡折带位置与洼槽区的关系,将贝西坡折带坡折分为:内坡折带、中坡折带和外坡折带。外坡折带主要发育侵蚀坡折,控制着地层超覆圈闭带;中坡折带主要发育断裂坡折和挠曲坡折,控制着断块-岩性复合圈闭带;内坡折带主要发育沉积坡折,控制着透镜状岩性圈闭带。The lithologic-stratigraphic traps in lacustrine basins are controlled by slope-breaks. Beixi Slope in Hailaer Basin has thecharacteristics of slope-breaks. It is important to study the features and genesis of slope-breaks, and the control mode of sedimentaryfacies and lithologic-stratigraphic traps to help identify favorable exploration area. By the genetic mechanism of Beixi slope-breaks, wecan divide them into fault slope-break, flexural slope-break, sedimentary slope-break and erosive slope-break. According to therelationships between slope-break and subsag, we divide the slope-break into three cells-inner slope-break, middle slope-break andouter slope-break. The outer slope-break is characterized by erosion slope-break, controlling the stratigraphic overlap traps; the middleslope-break is mainly fault slope-break and flexural slope-break, controlling the block-lithologic combination traps; the innerslope-break is mainly sedimentary slope-break, controlling the lenticular lithologic traps.

关 键 词：多级坡折带 岩性地层圈闭 贝西斜坡 下白垩统 

分 类 号：P618.13[天文地球—矿床学]