石臼坨凸起中段构造转换带特征及作用  

CHARACTERISTICS AND ITS ACTIONS OF THE STRUCTURAL TRANSFER ZONE IN THE MIDDLE INTERVAL OF SHIJIUTUO UPLIFT

作　　者：余宏忠[1] 

机构地区：[1]中国石油大学地球科学学院,北京102249

出　　处：《大庆石油地质与开发》2014年第1期27-31,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重大科技专项"大型油气田及煤层气开发"(2008ZX05000-23);"近海隐蔽油气藏勘探技术"(2008ZX05000-23-2)资助

摘　　要：为了寻找石臼坨凸起新近系油气富集区,采用应力场分析、断层相关分析等方法,对石臼坨凸起中段的断裂体系及对油气成藏的作用进行了研究。结果表明:石臼坨凸起中段存在构造转换带,并对沉积相的展布和岩性圈闭的形成具明显控制作用;NE向断裂与近NW向断裂呈网格状分布,形成了相对挤压或相对拉张的不同力学性质区带,为垂直交叉断裂控制下的油气成藏模式;构造转换带附近易形成岩性—构造、构造—岩性等油气藏,是寻找油气富集区的有利勘探方向。In order to search for oil and gas zone enriched in Neogene Shijiutuo Uplift, the fault system in the mid- die of the uplift and its action on the hydrocarbon accumulation are studied by means of stress field analysis, fault- related analysis and other methods. The results show that there are structural transfer zone in the middle interval and obvious controlling actions on the spread of the sedimentary facies and formation of the lithologic traps; the grid-like distribution is shown for NE and near NW faults, thus the belts with different mechanical properties of the relative compression or extension are formed, so the hydrocarbon accumulation controlled by the rightly crossed faults; the lithologic-structural, structural-lithologic petroleum reservoirs and so on are easily accumulated near the belts, so the favorable directions for the next exploration of hydrocarbon accumulated areas are ensured.

关 键 词：石臼坨凸起 构造转换带 控制作用 断裂体系 油气藏 

分 类 号：TE121.2[石油与天然气工程—油气勘探]