摘要
荣兴屯构造带油气分布深受断裂系统影响致使其分布规律不清楚。为揭示荣兴屯断裂特征及其油气地质意义,通过地震剖面、构造图和平衡剖面等厘定了断裂的级别、性质和空间组合特征。研究表明,本区断裂的性质、特征及演化极为复杂,平面上可划分为北东向主级断裂和北西向次级断裂,纵向上依次发育了沙三期伸展断裂、东营期走滑断裂及馆陶期压缩断裂,3种不同性质的断裂系统在纵向上叠加后构成了本区复杂的断裂体系。这种复杂断裂体系深刻影响到油气藏形成、分布与调整等诸多方面,具体表现为其差异活动导致了凸凹相间的基本构造格局与油气藏的形成,控制了烃源、各类圈闭以及火山岩—砂岩—泥岩三元储集结构的发育,是油气运移的主要通道和重要找油线索,大部分油气藏依附于各级断裂及其相关构造。
There are lots of hydrocarbons discovered in Rongxingtun Area,Eastern sag,Liaohe Depression,while the obscure and complex distribution of fault system caused difficulties for revealing hydrocarbon distribution and limited the further explo-ration in this area. To reveal the fault characteristics and its geological significance,we delineated the classes,characteristics and spatial combination characteristics of the faults by using the seismic profile,structure map and balanced section. The study reveals that the faults properties,characteristics and evolution are very complex,which can be divided into the main faults with north-east distribution and the secondary faults with north-west direction in the plane. They are superposed by three kinds of fault systems in vertical direction,the extension faults in the third section of Shahejie Formation,the Dongying strike-slip faults and Guantao compression faults separately. Three different fault systems superposed on the vertical direction. This kind of complex fault systems deeply affect the formation,distribution and adjustment reservoir;specifically,the difference activ-ities led to the convex concave and basic tectonic framework and the formation of reservoirs,and controlled the hydrocarbon source,various types of traps and volcanic-sandstone-mudstone reservoirs architecture：such characteristics make the fault sys-system the main channels for hydrocarbon migration and important clues to find oil,and most of the reservoirs are attached to the faults and its related structure at different hierarchy.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第3期19-26,共8页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家自然科学基金(41102066)
关键词
荣兴屯
断裂
组合样式
断裂体系
油气成藏
Rongxingtun
faults
combination types
fault system
hydrocarbon accumulation
