济阳坳陷不同区带构造样式发育与油气富集差异性分析
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摘要
构造样式控制沉积并决定油气富集。通过对济阳坳陷盆地结构特征、构造演化、地震资料及不同区带油气地质模型的分析,认为该坳陷构造样式主要有翘倾断块、滑动断阶、潜山披覆、重力构造、底辟构造等7种类型,不同构造带是由断陷期发育的不同类型的构造样式叠置组合而成:陡坡带是由早期板式断层被晚期滑动断阶、逆牵引背斜改造而成,中央隆起带是由晚期的背斜、半背斜叠加在早期洼陷之上而成,缓坡带是由早期和晚期不同类型翘倾断块叠置而成,凸起带是在潜山背斜背景上发育起来的披覆构造;不同区带构造样式发育的差异,控制了油气富集的差异,凸起带、底辟背斜的中央隆起带及主控断层演化程度高的陡坡带油气富集。
Structural styles control the deposition and oil-gas accumulation.According to analysis of the characteristics of basin structure,tectonic evolution,seismic data and different zone oil-gas geological model in Jiyang depression,the conclusions are that,there are seven secondary structural styles including tilted faulted-block,slide faulted-ramp,buried hill draping,gravitative antiform and diapir structure in the basin.Different structural belt is formed of different superimposed structural styles.In the rift period,the steep slope zone evolved from the early plate faults into late slide block or rollover anticline,the central uplift belt is formed of late anticline or half anticline overlaying on the early subsag,the gentle slope belt is composed of different types of early and late overlying faulted block,the bump belt is formed of buried hill and draping anticline.Differences of tectonic styles development control the oil-gas accumulation differences in different structural zones.Oil-gas enrich in the bump belt,the central uplift belt of diapiric anticline controlling and the steep slope of main control fault with a high evolution degree.
Structural styles control the deposition and oil-gas accumulation.According to analysis of the characteristics of basin structure,tectonic evolution,seismic data and different zone oil-gas geological model in Jiyang depression,the conclusions are that,there are seven secondary structural styles including tilted faulted-block,slide faulted-ramp,buried hill draping,gravitative antiform and diapir structure in the basin.Different structural belt is formed of different superimposed structural styles.In the rift period,the steep slope zone evolved from the early plate faults into late slide block or rollover anticline,the central uplift belt is formed of late anticline or half anticline overlaying on the early subsag,the gentle slope belt is composed of different types of early and late overlying faulted block,the bump belt is formed of buried hill and draping anticline.Differences of tectonic styles development control the oil-gas accumulation differences in different structural zones.Oil-gas enrich in the bump belt,the central uplift belt of diapiric anticline controlling and the steep slope of main control fault with a high evolution degree.
引文
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[2]徐怀民,徐朝晖,张善文,等.中国东部陆相盆地的层次结构、油气成藏体系与隐蔽油气藏特征-以济阳凹陷为例[J].中国科学(D辑),2008,38(增刊):129-137.
[3]赵文智,池英柳.渤海湾盆地含油气层系区域分布规律与主控因素[J].石油学报,2000,21(1):10-15.
[4]董清水,赵占银,刘招君,等.半地堑式断陷盆地的油气成藏模式-以松辽盆地梨树断陷为例[J].吉林大学学报(地球科学版),2003,33(1):43-46.
[5]崔秀梅,王建瑞,李清,等.冀中坳陷新河凸起变质岩油气藏成藏条件探讨[J].特种油气藏,2011,18(2):29-32.
[6]杨贵丽.桥东油田新生代构造演化对油气成藏影响[J].特种油气藏,2011,18(1):40-43.
[7]李丕龙.陆相断陷盆地构造演化与构造样式[M].北京:石油工业出版社,2003:12,87-157.
[8]陈云海,于建国,舒良树,等.济阳坳陷构造样式及其与油气关系[J].高校地质学报,2005,12(4):622-632.
[9]邱桂强,王勇,熊伟,等.济阳坳陷新生代盆地结构差异性研究[J].油气地与采收率,2011,18(6):1-5.
[10]龚再升,王国纯.渤海新构造成运动控制晚期油气成藏[J].石油学报,2001,22(2):1-7.
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