东营凹陷南斜坡王家岗地区沙三段沉积体系与储层特征研究

发布时间：2018-03-25 03:20

本文选题：东营凹陷　切入点：沙三段　出处：《中国地质大学(北京)》2017年硕士论文

【摘要】：本研究内容所属区域位于东营凹陷南部斜坡的东侧。从地理位置角度,该区处于山东省东营区的南侧,广饶县的东北侧。研究区为东营凹陷中央隆起带西段、牛庄凹陷东部,研究层段为沙河街组,沙三段。其沙三段的埋藏深度为1400米-2800米,地层厚度为700米-1400米。本文借助沉积学、层序地层学等理论为指导,选取56口井资料丰富的探井,综合运用岩心资料、测井资料、录井资料、地震分析及其它地球化学等资料,结合研究区前人研究成果,针对研究区现阶段勘探开发现状及存在的问题,分析研究区沉积微相特征及沉积体系研究。利用在岩性特征、地震反射特征、测井曲线特征等出现的特殊反馈,建立层序边界标志及标准层,构建了该区域层序地层格架。将沙三段划分为3个三级层序。从下到上分别为沙三段下层序SQIII-1、沙三段中层序SQIII-2、沙三段上层序SQIII-3。并且依据三级层序,将其细化分为7个四级层序,分别为SQIII-1-1、SQIII-1-2、SQIII-2-1、SQIII-2-2、SQIII-2-3、SQIII-3-1、SQIII-3-2。对研究区岩心数据、录井数据、测井数据及前人研究成果分析,结合岩石类型、沉积构造、古生物化石等可靠相标志,对山东省东营市王家岗地区沙三段沉积时期的沉积相进行划分。明确了研究区沉积相、亚相及微相类型及特征,建立了沉积相模式。该研究针对该区域沉积相的不同种类进行分析,并对其空间的展布顺序进行研究。从整体的角度阐述了该区域沉积相的分布规律以及其演化发展,并根据研究成果对有利储油砂体砂层进行了预测分析。
[Abstract]:The research area is located on the east side of the southern slope of Dongying Sag. From the geographical point of view, the area is located in the south side of Dongying District of Shandong Province and the northeast side of Guangrao County. The research area is the western section of the central uplift belt of Dongying Sag and the eastern part of Niuzhuang Sag. The study layer is Shahejie formation and Sha3 formation. The buried depth and thickness of the formation are 1400 m -2800 m and 700m -1400 m respectively. In this paper, 56 wells with abundant data are selected under the guidance of sedimentology, sequence stratigraphy and other theories. Based on the core data, logging data, logging data, seismic analysis and other geochemical data, combined with previous research results in the study area, this paper aims at the present situation of exploration and development and the existing problems in the study area. The characteristics of sedimentary microfacies and sedimentary system in the study area are analyzed. Based on the special feedback such as lithologic characteristics, seismic reflection characteristics and logging curve characteristics, the sequence boundary markers and standard layers are established. The sequence stratigraphic framework of the region is constructed. The third member is divided into three third-order sequences. From the bottom to the top, the lower sequence SQIII-1, the middle sequence SQIII-2 and the upper sequence SQIII-3of the third member of Shahejie formation are classified into seven four-order sequences. SQIII-1-1, SQIII-1-2, SQIII-2-1, SQIII-2-2, SQIII-2-2, SQIII-2-3, SQIII-3-1, SQIII-3-2, SQIII-2-2, SQIII-2-2, SQIII-2-2, SQIII-2-2, SQIII-2-1, SQIII-2-2. The sedimentary facies of the third member of Shahejie formation in Wangjiagang area, Dongying City, Shandong Province are divided. The types and characteristics of sedimentary facies, subfacies and microfacies in the study area are defined. The model of sedimentary facies is established. In this study, different types of sedimentary facies in the region are analyzed, and the spatial distribution sequence of sedimentary facies is studied. The distribution law and evolution of sedimentary facies in this region are expounded from the whole view. According to the research results, the sand reservoir of favorable oil storage sand body is forecasted and analyzed.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13;TE311

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