【作者】 何瑞武；

【导师】 夏斌； 姜在兴；

【作者基本信息】 中国科学院研究生院（广州地球化学研究所） ， 构造地质学， 2005， 博士

【摘要】 在简要分析了研究区地质概况的基础上,首先对研究区构造演化进行了深入的研究。主要进行了研究区内四条地震剖面的分析,这四条剖面分别是东西向的58和82.9测线,南北向的463和468.5测线。研究表明,临南凹陷古近系构造活动强烈,构造活动由早到晚具有由强减弱的趋势。孔店组构造沉降和盆地的伸展活动最强,沙一-东营组沉积时期伸展活动基本停止。 在层序地层学研究方面,将沙三段-东营组沉积可划分出两个二级层序,并可进一步划分出六个三级层序,沙四上可以划分为1个三级层序,2个体系域。 在沉积学研究方面,首先分析了研究区沉积相标志,包括岩石学特征、结构特征和沉积构造特征等。在此基础上,着重进行了单井相剖面分析,并进行了连井剖面分析和对比工作,在沙三段至东营组地层中完成了区内三纵三横六条剖面沉积相分析和对比工作,在沙四段完成了三条近南北纵向剖面,二条近东西向横剖面的相分析和对比工作。最后,在沉积相带分析的工作基础上,确定出三角洲、扇三角洲、湖底扇、湖泊滩坝相类型。 在油气成藏研究方面,首先提出了活动轴面和地质转换系统的概念以及相关研究方法。在此基础上,结合研究区油气地质概况,运用地质转换系统理论对研究区油气成藏条件及机理进行了深入的分析和研究,并预测了有利区带。更多还原

【Abstract】 Based on a general analysis of the geological situation of Linnan depression, the structural evolution of the study area has been studied in detail. There are 4 main seismic sections which have been analyzed. They are line 58, line 82.9, line 463 and line 468.5. The result indicates that the most active structural movement is in the Eocene and with the progress of time, the movement becomes weaker and weaker. In the Ed period, the structural extensional movement has almost stopped.In the aspect of sequence stratigraphy, the Es3-Ed has been divided into 2 2nd-order sequences and 6 3rd-order sequences in farther. The upper Es4 has been divided into 1 3rd-order sequence.In the sedimentary analysis, firstly, the sedimentary facies have been studied. It includes the characters of petrology, textures and sedimentary structures. Secondly, the analysis of single well section has been made on several wells and on the basis, the multi-well section analysis has been done. Finally, in the study area, there are 4 kinds of facies have been identifyied.In the oil reservoir formation researching, the concepts of active axis surface and GTS (geo-transformation system) have been put forward. And the pertinent researching methods have been mentioned also. And on this basis, combined with the petroleum geological conditions, the study using the GTS methods has been done on the Linnan depression. At last, some favorable areas for the exploration have been predicted.更多还原