贝尔凹陷布达特群潜山油气成藏模式及有利区预测  

Hydrocarbon accumulating model and forecasting of favorable prospecting areas in buried hill of Budate Group,Beier Sag

作　　者：付广[1] 康德江[1] 

机构地区：[1]大庆石油学院

出　　处：《石油勘探与开发》2007年第2期165-169,共5页Petroleum Exploration and Development

基　　金：国家"973"重大基础研究项目(2001CB209104)

摘　　要：通过对贝尔凹陷布达特群潜山油气藏类型、油气分布与成藏条件进行叠合分析,认为贝尔凹陷布达特群潜山油气成藏与分布主要受南屯组烃源岩供烃窗口、烃源岩断裂和破坏断裂、裂缝发育区、油气运移汇聚区、中期变形形成的断阶和断垒型潜山的共同控制。油气成藏具2种模式:油气沿断裂或不整合面侧向运移至潜山顶部风化壳聚集成藏;油气沿断裂或裂缝垂向运移至潜山内部裂缝或破碎带聚集成藏。根据对各种油气成藏与分布主控因素的分析,预测:贝尔凹陷布达特群潜山油气成藏有利勘探区主要分布在苏德尔特潜山构造带中部、呼和诺仁断鼻构造带中部的贝17井区周围和敖瑙海洼槽中部的贝36井周围;较有利勘探区主要为霍多莫尔背斜带南部和呼和诺仁断鼻构造带北部的贝5井周围。The analysis of the hydrocarbon type, distribution and accumulating conditions in the buried hill of Budate Group in the Beier Sag reveals that the reservoirs formation and distribution are controlled by hydroncarbon-supplying window of K1 n, source rock and caprock faulting, fracture-developing areas, collecting areas of oil-gas migration, and fault-bench and fault-horst hills formed in the middle-period deformation. There are two hydrocarbon accumulating models., accumulating in weathering crust in the top of the buried hill by migrating laterally through faults or unconformities, and accumulating in fractures or crushed zones in the buried hill by migrating vertically through faults. The most favorable prospecting areas are in the middle of the Sude＇erte structural zone, around Well Bei 17 in the middle of the Huhenuoren fault nose structural zone, and around Well Bei 36 in the middle of the Aonaohai sub-sag. Other favorable areas are in the south of the Huoduomo＇er anticline zone and around Well Bei 5 in the north of the Huhenuoren fault nose structural zone.

关 键 词：贝尔凹陷 布达特群 潜山 分布 主控因素 有利勘探区 预测 

分 类 号：TE122.3[石油与天然气工程—油气勘探]