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| 渤海湾盆地垦东凸起构造特征与油气聚集 | |
| 引用本文： | 付兆辉,高喜龙,陆友明,李敏,侯仔明.渤海湾盆地垦东凸起构造特征与油气聚集[J].现代地质,2008,22(4). |
| 作者姓名： | 付兆辉 高喜龙 陆友明 李敏 侯仔明 |
| 作者单位： | 1. 中国地质大学,能源学院,北京,100083;中国石化胜利油田分公司,海洋采油厂,山东,东营,257237 2. 中国石化胜利油田分公司,海洋采油厂,山东,东营,257237 3. 中国石化胜利油田分公司,孤东采油厂,山东,东营,257237 4. 中国地质大学,能源学院,北京,100083 |
| 基金项目： | 中国石油化工股份有限公司提高采收率导向技术项目 |
| 摘 要： | 渤海湾盆地中南部地区垦东凸起是一个新的油气勘探领域。为了深入研究垦东凸起的构造特征与油气聚集规律,寻找有利的油气圈闭,就下列问题进行探讨:渤海湾盆地中、南部的区域构造特征,垦东凸起的构造演化和构造样式和油气圈闭类型和油气富集特征。通过对本区地质、地球物理和地球化学的综合研究认为,渤海湾盆地中南部区域由于成带状的伸展断陷-断凸和连接它们的横向调节带的存在,构造上呈现出南北分带、东西分段的断块构造格局。构造发展史表明,垦东凸起及北部斜坡带经历了裂谷期前、裂谷期和裂谷期后3大发育阶段,纵向上呈3层结构分布。垦东凸起可分为西段高凸起、东段低凸起,分别与北部斜坡带西段和东段相连。其中北部斜坡带的构造样式主要为同向的阶梯状正断层。凸起内部主要为背向正断层组合形成的地垒和面向正断层组合形成的地堑。垦东凸起圈闭可分为5种类型,其中构造圈闭主要有牵引背斜、逆牵引背斜、屋脊断块以及披覆背斜等。油气主要来自古近纪黄河口伸展断陷生油中心,自北向南沿砂体、不整合面和正断层呈阶梯状侧向和垂向运移至北部斜坡带和凸起,在新近纪和古近纪地层组成的有利圈闭处聚集。 |
| 关 键 词： | 构造演化 构造特征 油气圈闭 油气聚集特征 垦东凸起 |
Tectonic Characteristics and Hydrocarbon Accumulation of Kendong Uplift, Bohai Bay Basin |
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| FU Zhao-hui,GAO Xi-long,LU You-ming,LI Min,HOU Zi-ming.Tectonic Characteristics and Hydrocarbon Accumulation of Kendong Uplift, Bohai Bay Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2008,22(4). | |
| Authors: | FU Zhao-hui GAO Xi-long LU You-ming LI Min HOU Zi-ming |
| Abstract: | Kendong Uplift is a new hydrocarbon exploration field in central and southern Bohai Bay Basin.In order to study the tectonic characteristics and hydrocarbon accumulation rules of Kendong Uplift,and look for advantaged traps,the following topics are discussed in this paper:the tectonic characteristics of central and southern Bohai Bay Basin,the tectonic evolution history and structural style of Kendong Uplift,and the types of traps and the characteristics of hydrocarbon accumulation.Some conclusions were drawn from the study on the geology,geophysics,and geochemistry of Kendong Uplift.The existence of the extensional-depressions fault uplifts and transverse accommodation zone which joined them shows that the regional structure of the central and southern Bohai Bay Basin can be divided into several belts and sections on the SN and EW direction in plane.The tectonic evolution history shows that Kendong Uplift and northern slope zone experienced three stages: Pre-rift Period,Rifting Period,and Post-rift Period.Therefore,the stratum shows three-layer architectures in profile.Kendong Uplift can be divided into west high uplift and east lower uplift,bordering respectively upon west part and east part of northern slope zone.The structural style of northern slope zone is mainly stair-stepping normal faults with some dip;but in the uplift,the structural style is mainly horst combined by two major normal faults with opposed dip and graben combined by two major normal faults in which one fault situated face to face with another fault.The traps of Kendong Uplift can be divided into five types,among which dragging anticline,reverse dragging anticline,roof-shaped fault block,and drape anticline are structural traps.The hydrocarbon mainly comes from the source center of Palogene Huanghekou extensional fault depression.Along vertical and lateral migrating pathways formed by unconformity surface,sand bodies,and stair-stepping normal faults,hydrocarbon migrated to Kendong Uplift and northern slope zone from north to south,and accumulated in favorable traps of the Palogene and Neogene strata. |
| Keywords: | tectonic evolution tectonic characteristic hydrocarbon trap hydrocarbon accumulation Kendong Uplift |
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