高邮凹陷吴堡断裂带构造精细研究

发布时间：2018-03-06 05:20

本文选题：高邮凹陷　切入点：吴堡断裂带　出处：《中国石油大学(华东)》2015年硕士论文　论文类型：学位论文

【摘要】：吴堡断裂带对高邮凹陷内油气的生成、运移、聚集以及分布有着重要的影响,本文在收集整理研究区内地质资料、测井资料、地震资料的基础上,对吴堡断裂带进行构造精细解释及断裂特征分析,综合利用多学科知识理论,运用构造分析的方法从断裂的几何学和动力学等方面对主要断裂进行分析探讨,研究在油气的运移、成藏中主要断裂所起的作用,并分析研究火成岩在高邮凹陷内的分布特点及特征,这对本地区的滚动勘探评价有着重大意义。通过常规三维地震解释技术,对研究区内主要层位以及断裂进行精细解释。在进行地震解释时要与原有的解释方案相结合,主要解释层位包括T33、T40等反射层,重新梳理吴堡断裂系统发育规律,落实全区构造特征。根据构造解释的结果分析研究吴堡断裂带的平面构造样式及剖面构造样式,吴堡断裂带的构造样式较为复杂。综合考虑断层的活动期次、断层活动规模以及成因机制等因素,将吴堡断裂带内所包含的断层分为四级,其中吴(1)断层为一级断裂,属于高邮凹陷内的边界断层;吴(2)断层为二级断裂,属于高邮凹陷内控制其构造带形成和发育的大断层。高邮凹陷火成岩广泛发育,由于火山活动往往伴随断裂带的发育,地层的岩性和分布往往受断裂带的控制,所以火成岩分布主要是深大断裂的影响,一般沿断裂成环、成带分布。火成岩侵入产生的孔隙、裂缝为油气运移创造了有利条件。通过对吴堡断裂带构造演化分析可知,阜宁期、戴南期和三垛期是断层的主要发育期,吴堡断裂带是与郯庐断裂相伴生的走滑断裂体系。经过精细解释在陈堡油田中发现了逆断层,并对其几何学特征及活动强度进行分析研究。根据构造解释结果评价了陈9断块有利圈闭,其平面投影面积为1.85km2。逆断层控制下的有利圈闭的发现为研究区油气勘探提供了新的方向。
[Abstract]:The Wubao fault zone has an important influence on the generation, migration, accumulation and distribution of oil and gas in Gaoyou sag. The structural fine interpretation and fault characteristic analysis of the Wubu fault zone are carried out. The main faults are analyzed and discussed from the geometry and dynamics of the faults by using the theory of multidisciplinary knowledge and the method of structural analysis. This paper studies the effect of main faults in hydrocarbon migration and reservoir formation, and analyzes the distribution characteristics and characteristics of igneous rocks in Gaoyou sag, which is of great significance to the rolling exploration and evaluation in this area. The detailed interpretation of the main horizons and faults in the study area should be carried out in combination with the original interpretation scheme. The main interpretation zones include the reflection layers of T33, T40 and so on, and the regularity of Wubao fault system development should be rearranged. According to the result of structural interpretation, the plane structural style and section structural style of Wubao fault zone are analyzed and studied. The structural style of Wubao fault zone is more complicated. The faults contained in the Wubu fault zone are divided into four grades by the scale of fault activity and the genetic mechanism, among which the Wuqian 1) fault belongs to the boundary fault in Gaoyou sag, and the Wuzao 2) fault is the second grade fault. The igneous rocks in Gaoyou sag are widely developed, and the lithology and distribution of the strata are often controlled by the fault zones because volcanic activity is often accompanied by the development of the fault zone. Therefore, the distribution of igneous rocks is mainly influenced by deep and large faults, and generally distributes along the faulted rings and belts. The pores and fractures caused by igneous rock intrusion create favorable conditions for oil and gas migration. Through the analysis of the structural evolution of the Wubu fault zone, it can be seen that, Funing, Dainan and Sanpallei are the main developing periods of faults, and the Wubao fault zone is a strike-slip fault system associated with Tanlu fault. The reverse fault was found in Chenbao oil field through fine interpretation. Based on the structural interpretation results, the favorable traps of fault block Chen 9 are evaluated. The plane projection area is 1.85 km2. The discovery of favorable traps under the control of the reverse fault provides a new direction for oil and gas exploration in the study area.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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