杏南开发区水驱后期层系井网重组优化研究

发布时间：2018-09-02 06:29

【摘要】：杏南开发区经过四十多年的注水开发,已经入高含水开采阶段,储层纵向和平面非均质性的矛盾日益突出,笼统注水开发及原有注采井网不能适应该阶段的生产需要,严重制约了采收率的增长,因此有必要开展高含水油田层系重组及井网优化部署是目前必要的生产任务。首先搜集杏南开发区地震、地质资料完善现有的地下认识,在重构地下认识的基础上建立地层构架、重建构造模型及储层模型,利用Petrel建模软件对杏南开发区进行了三维地质模型的建立及修正,达到所要求的的建模精度的基础上网格粗化成数值模拟软件需要的网格模型。本文利用数模软件Eclipse对杏南开发区进行了精细数值模拟研究,得到目前该区块的剩余油分布特点,分为五种不同类型对剩余油进行了归纳总结;再次基础上开展了重建井网重组层系的各项关键技术研究包括层系划分原则、独立开发层系剩余资源量论证、层系划分技术研究及井网重建的关键技术研究的理论研究;根据杏南开发区实际开采参数得到适用于杏南开发区整装区块的层系重组基本原则,提出了该断块层系重组的具体划分方法,并在此基础上部署断块开发井网进行指标预测。对高含水后期的纵向开采层位较多的老油田提高水驱采收率提供了可靠的依据。
[Abstract]:After more than 40 years of water injection development, Xingnan Development Zone has entered the stage of high water cut production. The contradiction between vertical and horizontal heterogeneity of reservoir is becoming more and more prominent. The general water injection development and the original injection-production well pattern can not meet the production needs of this stage. The increase of oil recovery is seriously restricted, so it is necessary to carry out the recombination of strata and the optimum deployment of well pattern in high water cut oil fields at present. First of all, collect the earthquake in Xingnan Development Zone, improve the existing underground understanding of geological data, establish stratigraphic framework, reconstruct structural model and reservoir model on the basis of reconstructing underground knowledge. The 3D geological model of Xingnan Development Zone was established and revised by using Petrel modeling software. The model was coarsened into the mesh model required by numerical simulation software on the basis of the required modeling accuracy. In this paper, the fine numerical simulation of Xingnan Development Zone is carried out by using the numerical simulation software Eclipse, and the distribution characteristics of remaining oil in this block are obtained, which can be divided into five different types of remaining oil. On the basis of this, the key technologies of reconstructing well pattern are studied, including the principle of stratum division, the demonstration of residual resource quantity of independent development layer, the research of layer division technology and the theory study of key technology of well pattern reconstruction. Based on the practical mining parameters of Xingnan Development Zone, the basic principles of stratigraphic recombination applied to the whole block of Xingnan Development Zone are obtained, and the specific division method of this fault block series reorganization is put forward, and on this basis, the development well pattern of fault block is deployed to predict the indexes. It provides a reliable basis for increasing water drive recovery in the old oil fields with more vertical production layers in the late stage of high water cut.
【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】：TE357.62

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