辽河大民屯凹陷沈161块微构造特征研究

发布时间：2018-05-13 04:14

本文选题：沈161块 + 层序地层特征　；参考：《东北石油大学》2015年硕士论文

【摘要】：沈161块是辽河油田大民屯凹陷近年来老区开发调整的重要区块,含油目的层位是S32亚段。本文重点分析了区块内发育的微构造特征,以更好研究其剩余油潜力。本论文以高分辨层序层序地层学为理论指导,以三维地震资料与测井曲线资料为基础,充分收集前人的研究成果,建立沈161块Es32亚段的地层格架,完成了地层划分对比的工作,将Es32亚段地层划分为4个油层组,26个砂岩组和58个小层。结合现有资料,采取井震结合、静态与动态开发资料相结合的方法,开展了构造精细解释。全面分析了沈161块Es32亚段的构造特征,共解释了全区8条断层,分为呈近东西向和南北向的两类,其性质均为沙三期正断层。以构造解释与沉积模型为基础,完成了沈161块主力小层的微构造图。识别了七种微构造类型,其中以微断鼻和微断沟构造相对发育,并发现了四种微构造的顶底配置模式。研究认为沈161块的断层发育,构造作用力是本区块微构造形成的主要因素。本文明确了沈161块微断鼻构造的表征方法,建立了微断鼻长宽的定量关系;此外,微断鼻的构造幅度与断层的水平断距呈正相关。微构造与剩余油关系密切。分析认为在沈161块目的层内形成的微构造中,正向微构造对剩余油的富集有利;顶凸底凸型微构造配置模式对剩余油的富集有利;正向微构造和水下分流河道带叠合的组合模式,油井的产量高。
[Abstract]:Shen161 block is an important block in the development and adjustment of the old area in the Damingtun depression of Liaohe Oilfield in recent years. In this paper, the characteristics of microstructures developed in blocks are analyzed in order to better study the potential of remaining oil. Under the guidance of high-resolution sequence stratigraphy and based on 3-D seismic data and logging curve data, this paper has fully collected the previous research results, established the stratigraphic framework of Es32 submember of Shen-161 block, and completed the work of stratigraphic division and correlation. The Es32 submember is divided into 4 reservoirs, 26 sandstone formations and 58 substrata. Combined with the existing data, the fine interpretation of the structure is carried out by combining the well and earthquake data and the static and dynamic development data. The structural characteristics of the Es32 submember of block Shen161 are comprehensively analyzed, and eight faults in the whole area are explained, which are divided into two types: near east-west and south-north, and their properties are all normal faults of the third stage of Sha. Based on the tectonic interpretation and sedimentary model, the microstructural map of the main layer of Shen161 block has been completed. Seven types of microstructures were identified, among which microfaulted nose and microfaulted trench structures were relatively developed, and four top-to-bottom configuration patterns of microstructures were found. It is considered that fault development and tectonic force are the main factors for the formation of microstructures in Shen161 block. In this paper, the characterization method of micro-fault nose structure in block Shen 161 is defined, and the quantitative relationship between the length and width of micro-broken nose is established, in addition, the structural amplitude of micro-broken nose is positively correlated with the horizontal fault distance of fault. The microstructures are closely related to the remaining oil. It is considered that in the microstructures formed in the target layer of block Shen161, the forward microstructures are favorable to the enrichment of remaining oil, the topmost protruded microstructures are favorable to the enrichment of remaining oil, and the former is favorable to the accumulation of remaining oil. The combination model of forward microstructure and underwater distributary channel zone has high oil well production.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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