【作者】 王代流；

【导师】 吴时国；

【作者基本信息】 中国科学院研究生院（海洋研究所） ， 海洋地质， 2009， 博士

【摘要】 研究区孤岛油田中二区中28-8井区位于孤岛油田中部,属孤岛披覆背斜构造中南部。选择孤岛油田中二区中28-8密井网典型井区作为解剖区,以馆陶组上段河流相地层为主要研究对象。根据区域地质资料、岩心资料、地震资料、开发动态资料、测井资料和开发动态资料的研究,建立地层模型,对研究区进行沉积相分析、高分辨率层序地层分析,确定了储层特征,并建立储层地质知识库,采用地质统计学的各种插值和模拟方法,开展随机模拟方法优选分析,选择合适的随机模拟方法,建立三维储层模型。采用地质统计学的交叉检验和分维分析等手段验证模型的可靠性和实用性。在此基础上进行网格粗化,实现储层模型的三维可视化。论文将静态研究与实际生产动态相结合,以标准层和辅助标准层划分砂层组,以沉积旋回—沉积时间单元对比方法为主,结合其他对比原则,对孤岛油田馆陶组河流相储层进行小层精细对比和划分。在精细地层对比、井斜校正和补心高度校正的基础上,对孤岛油田馆陶组河流相储层主力小层顶底面微型构造进行了研究和分析,在研究区内识别出3种微型构造:正向微型构造;负向微型构造;斜面微型构造。在河流相储层构型理论的指导下,采用动静结合、微观与宏观结合进行储层的多尺度剖析,依次识别复合砂体内的河道,河道内的点坝,点坝内的侧积体和泥质侧积层,认为发育4种亚相(河道、溢岸、河漫、废弃河道),6种微相(点坝、决口水道、决口扇、天然堤、泛滥平原、废弃河道)。砂层内部发育3种夹层(泥质夹层、钙质夹层、物性夹层),层间发育4种隔层(连续分布的隔层、均匀分布的隔层、条带状分布的隔层、局部分布的隔层),并分别确定了各种隔夹层的空间展布规律。本次研究主要采用“相控建模”方法,在随机模拟研究中,通过序贯指示模拟方法建立沉积相模型,在此基础上,通过序贯高斯模拟方法建立三维储层模型。储层模型建成后,对模型符合地质认识的程度进行了检验。认为模拟效果良好,最终取个次随机模拟实现计算储量结果的平均值作为各主力层和全区的最终储量。更多还原

【Abstract】 The study area locates at wellblock-28-8 of the centre of Gudao oil field,Bohai Bay Basin. It is structurally southern Gudao drape anticline. The typical crowd-well area of wellblock-28-8 was selected as the main project, and the up segment of Guantao Formation as the study target. The stratigraphic model have been set up to research the sedimentary facies and high resolution sequences stratigraphy, in order to make sure the reservoir characteristic using the basic information, such as the cores, seismic and log. And then, the reservoir attributes could be identified, and the knowledge base of reservoir geology were set up. By making use of all kinds of interpolation and simulation methords of geo-statistics, selecting the suitable stochastic simulation approaches, the structural models could be formed. And then, the reliability and practicability of the models were inspected by means of cross check and fractal analysis. On basis of all the forward steps, gridding could be done, and last 3D- visualization were realized.In this dissertation, delicate comparison and classfication of the sublayers have been done, by combining the quiescent research and dynamic productivity, taking the comparison of sediment cycle-sediment time cells as the main methord, and following many other comparison orders. On the basis of the delicate comparison of sublayers, hole deviation correction and K.B. correction, the mini-structure of the upsurface and subsurace of main reservoir sublayers of Guantao Formation were studyed, which had been dentified as river faces. Three mini-structure in the area were identified: forward direction structure, negative direction structure and sloping direction structure.Following the guide of structural model of river facies, three subfacies and six microfacies were identifyed, as well as three interbedded strata and four barrier beds, by making use of the way of combination of static and dynamic, and the combination of microscope and macroscopic characteristics. And then, the patterns of all kinds of the layers could be known. Making use of the methord -“facies-controlling modelling”in the research, the sedimentary face models were setup by equential denotation simulation, and then, the 3D visualization were found by equential gauss simulation.After finishing the reservoir model, the agreement degree of the model was inspected with actual data, and the results were good. At last, on the base of the model, the reserve in the target area was prodicted.更多还原