大庆长垣杏十区单期次断裂刻画及有利目标区优选

发布时间：2018-05-18 06:40

本文选题：杏十区 + 断点　；参考：《东北石油大学》2017年硕士论文

【摘要】：以往针对断层边部剩余油研究多从储层非均质性、微幅度构造、开发动用状况等角度分析,而忽视断裂几何学、断裂结构对剩余油分布的控制。为此,深入开展井震结合构造解释的工作,开展研究区断层精细解释以及附近微幅度构造的精细识别刻画,提高断层刻画的精度,对剩余油的挖潜工作具有重要的指导意义。本次研究对杏十区的区域构造特征及几何运动学特征进行了分析,详细厘定断裂活动期次,系统剖析断裂形成演化历史。并且应用井震结合与地震层位解释技术对断点进行了核查及研究了断点的分布特征、规律,发现存在单断层一井多断的井震矛盾。针对这种矛盾我们应用断裂分段生长理论对断裂进行重新解释。基于对国内外断裂研究调研和区内测井和地震资料实际,通过大量的解释工作,提出了“断裂生长演化机制指导,测井地震约束”的单期次断裂刻画的方法。并以此方法对整个杏十区断层进行了重新识别,提高了断层的刻画精度,为指导挖掘断层边部剩余潜力提供坚实的地质依据。在本次研究中取得的具体成果及认识如下:(1)区域经历三期构造运动,各条断层均存在不同程度的同生现象,表明萨葡油层断裂具有多期活动特征;(2)进行断点核实与分布特征分析,精细解释断层附近地震层位和断层主体断面,为后续工作打下坚实基础;(3)弄清了大断裂生长演化成因及机制,大断裂具有“平面分段生长,垂向分期演化”的特点;(4)断裂生长演化机制指导,测井地震资料约束,形成一套大断层单期识别方法,一井多断断点的归属更加合理;(5)在精细断层解释的基础上,基于断层生长机制建立断层边部微构造识别方法和标准,定量刻画微构造分布范围;(6)综合分析构造、注采关系和潜力砂体,优选优选出44个有利目标区,其中12个一类有利区、11个二类有利区和21个三类有利区。
[Abstract]:In the past, most of the researches on residual oil along the fault edge were based on reservoir heterogeneity, micro-structure, exploitation and production conditions, but the fault geometry and the control of fault structure on the distribution of remaining oil were ignored. Therefore, it is of great significance to carry out the work of combining well and earthquake with structural interpretation, fine interpretation of faults and fine identification and characterization of nearby micro-amplitude structures in the study area, so as to improve the accuracy of fault characterization, which is of great significance for the work of tapping potential of remaining oil. In this study, the regional tectonic characteristics and geometric kinematics characteristics of Xingshi area were analyzed, and the fault active periods were determined in detail, and the evolution history of fault formation was systematically analyzed. In addition, the well shock combined with seismic horizon interpretation technique is used to check the fracture point and study the distribution characteristics and regularity of the fracture point. It is found that there is a conflict of well earthquakes with multiple faults in a single fault well. In view of this contradiction, we reinterpret the fracture by using the theory of segmental growth of fracture. Based on the investigation of fault at home and abroad and the practice of well logging and seismic data in the area, a method of single-stage fault characterization is put forward, which is guided by the mechanism of fault growth and evolution, and restricted by logging earthquakes through a great deal of interpretation work. By this method, the fault in Xingshi area is rerecognized, the accuracy of fault description is improved, and a solid geological basis is provided for guiding the excavation of residual potential along the fault edge. The concrete results and understandings in this study are as follows: 1) the region experienced three stages of tectonic movement, and each fault has different degrees of syngenesis. The results show that the fault of Sapu reservoir has multi-stage active characteristics, such as verification of fault point and analysis of distribution characteristics, and fine interpretation of seismic horizon and main fault section near the fault. In order to lay a solid foundation for the following work, the causes and mechanism of the growth and evolution of the large faults are clarified. The large faults have the characteristics of "plane subsection growth, vertical phased evolution". The fault growth and evolution mechanism is guided by the well logging seismic data constraints. A set of single phase identification methods for large faults is formed, and the attribution of multiple fault points in a well is more reasonable. On the basis of fine interpretation of faults, a method and standard for identification of microstructures along the fault edge are established based on fault growth mechanism. A quantitative description of the distribution range of microtectonics is presented. The comprehensive analysis of the structure, injection-production relationship and potential sand bodies shows that 44 favorable target areas have been selected, of which 12 are favorable areas, 11 are favorable zones of second class and 21 are favorable areas of three types.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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