饶阳凹陷横向潜山变换带构造特征及其油气聚集规律  

Tectonic Characteristics and Hydrocarbon Accumulation Rules of Lateral Buried Hill Transformation Belt in the Raoyang Sag

作　　者：劳海港[1] 陈清华[1] 吴孔友[1] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580

出　　处：《地质学报》2013年第3期415-423,共9页Acta Geologica Sinica

基　　金：中石油股份有限公司重点科技攻关项目(编号HBYT-WTY-2008-JS-1)资助的成果

摘　　要：利用钻井、地震及地质资料对饶阳凹陷潜山变换带特征及其成因进行了研究。结果表明,饶阳潜山变换带以中生代差异构造剥蚀为基础、新生代差异构造变形为动力而形成的;在构造单元间差异沉降响应下,形成一系列以基岩拆离滑脱面为载体、由东向西依次陷落的潜山。利用测井、试油、样品分析化验等资料证实,潜山变换带具有"时间上油气多期充注、平面上异源油气汇聚、剖面上油气差异聚集"的特点,形成以潜山油气藏为主、第三系油气藏为辅的复式油气聚集带。潜山变换带强烈构造变形为圈闭形成及储层发育提供良好条件,在"油气差异聚集"指导下,分析潜山内幕油气藏的空间分布,寻找潜山有利勘探目标,拓展冀中坳陷潜山勘探新领域。Based on well drilling and seismic data, the characteristics and mechanism of lateral buried hill transformation belt were studied. The result shows that the Raoyang buried hill transformation belt formed firstly by Mesozoic differential tectonic erosion and then by Cenozoic differential tectonic deformation; in response to different tectonic subsidence among tectonic units, a series of buried hills which took bedrock detachment surface as a carrier collapsed in order from east to west. Logging, oil test and laboratory analysis data confirm that buried hill transform zones are characterized by ＂ multiphase filling of oil and gas in time, heterologous oil accumulation in plane, differential hydrocarbon accumulation in profile＂, forming a compound oil and gas accumulation zone, which are dominated by buried hill hydrocarbon reservoir, with Tertiary hydrocarbon reservoir as supplement. Strong tectonic deformation of buried hill transform zones provides favorable conditions for formation of trap and reservoir. Under the guidance of ＂ oil and gas differential accumulation principle＂, it will be our task to analyze the spatial distribution of inner hydrocarbon reservoirs in buried hills, search for favorable exploration target, and extend prospecting area in buried hill of the Jizhong depression.

关 键 词：饶阳凹陷 横向潜山变换带 差异剥蚀 差异构造变形 油气差异聚集 潜山内幕油气藏 

分 类 号：P618.13[天文地球—矿床学]