东濮凹陷复杂断块群成藏主控因素及成藏模式  

Main control factors and patterns of hydrocarbon accumulation in complex fault block group of Dongpu Depression

作　　者：高渐珍[1] 薛国刚[2] 慕小水[1] 万晶[1] 祁登峰[1] 

机构地区：[1]中国石化中原油田分公司勘探开发科学研究院,河南濮阳457001 [2]中国石化中原油田分公司采油四厂,河南濮阳457176

出　　处：《断块油气田》2011年第6期691-695,共5页Fault-Block Oil & Gas Field

基　　金："十二五"国家科技重大专项"东濮凹陷油气富集规律与增储领域"(2011ZX05006-004)

摘　　要：东濮凹陷油气藏类型主要为复杂断块群油气藏。其形成原因主要有:多变的动力环境,频繁的构造转换,多方向、多期次断裂间的相互交切,多种变形介质等。在断块群成因机制研究基础上,将东濮凹陷断块群划分为8种类型。通过对不同类型断块群油气藏的解剖,总结出复杂断块群油气藏成藏的主控因素为:断层封堵性、输导体系及油气藏成藏期。建立了8种类型断块群成藏模式,认为复杂断块群成藏模式的核心为:控边断层控制油气藏形成,次级断层改造油气分布,断块高部位富集程度高,纵向上含油层系多,平面上油气藏叠合连片。研究成果对东濮凹陷持续稳产具有重要指导意义。Reservoir type is mainly the complex fault block group reservoir in Dongpu Depression. The formation reason of reservoir mainly includes muhivariant dynamic environment, frequent structure transposition, intersection among the fractures with multiple directions and multiple stages and various deformed media. Based on the study of genesis mechanism of fault block group, the fault block group of Dongpu Depression can be divided into eight types. On the basis of the analysis of different types of fault block group reservoirs, main control factors of hydrocarbon accumulation are summarized in complex fault block group, including fault sealing, transporting system and hydrocarbon accumulation stage of reservoir. The hydrocarbon accumulation pattern of eight types of fault block groups is established. It is believed that the core of hydrocarbon accumulation pattern of complex fault block group is that the edge-controlled fault dominates the formation of hydrocarbon reservoir, that the auxiliary fault changes the hydrocarbon distribution, and that the concentration degree of hydrocarbon in high structure position is high, with multiple oilbearing series vertically and with superimposed continuous reservoir in plane. Study result has an important significance in stable output in Dongpu Depression.

关 键 词：复杂断块群油气藏 成藏主控因素 断层封堵性 成藏模式 

分 类 号：TE121.13[石油与天然气工程—油气勘探]