杏六区东部单砂体储层评价及压裂技术研究

发布时间：2018-03-19 02:38

本文选题：单砂体剩余油　切入点：水流势场　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：杏六区块纵向上小层多、储层隔层薄、层间物性差异大,平面上砂体发育差异大、储层非均质性严重,由于上述原因产生的层间矛盾和平面矛盾导致注水开发效果差,剩余储量的挖潜难度大。将对应压裂技术应用到单砂体压裂施工,是以精细的地质分析、油藏评价与剩余油分布情况为平台,以系统井组单元为研究对象,整体的从纵向层间物性差异和平面砂体发育的非均质性来着眼,在平面上针对单砂体实施压裂改造,完善注采系统,提高驱油效率;在纵向上实施细分压裂,提高小层的动用程度,改善产液剖面及吸水剖面,最终达到对纵向上的潜力层逐一改造的目标。为了探索杏六区块难采储量有效动用的技术途径,解决油田开发过程中的实际问题,本文在充分调研国内外低渗透油藏开发情况基础上,结合大庆油田对杏六区以往的地质情况描述,应用了石油地质学理论,对其储层和岩性特征、储层参数和裂缝发育情况进行了系统分析和研究。本课题以杏六区精细地质研究为基本平台,充分评价分析区块水流势场模拟和实际测试结果,确立了对应压裂中选井及选层标准,分析了人工裂缝形态及参数的主控影响因素,建立储层最佳压裂改造设计优化方案,为杏六区块剩余油调整挖潜提供有效的技术手段,对于提高老区的开发效果具有重要的现实意义。
[Abstract]:In Xing6 block, there are many vertical small layers, thin reservoirs, great differences in physical properties between layers, great differences in the development of sand bodies on the plane, and serious reservoir heterogeneity. Due to the interlayer and plane contradictions caused by the above reasons, the effect of water injection development is poor. The application of corresponding fracturing technology to single sand body fracturing is based on fine geological analysis, reservoir evaluation and residual oil distribution, and takes the system well group unit as the research object. As a whole, we focus on the difference of physical properties between longitudinal layers and the heterogeneity of the development of planar sand bodies, and carry out fracturing reconstruction in the plane for single sand bodies, improve injection and production systems, improve oil displacement efficiency, and carry out fracturing in subdivision vertically. In order to improve the production degree of the substratum, improve the liquid production profile and the water absorption profile, and finally achieve the goal of transforming the vertical potential layers one by one, in order to explore the technical ways of effective utilization of the hard-to-exploit reserves in Xing6 block, In order to solve the practical problems in oilfield development, based on the investigation and investigation of the development of low permeability reservoirs at home and abroad, combined with the description of previous geological conditions in Xing6 area in Daqing Oilfield, the theory of petroleum geology is applied in this paper. The reservoir and lithologic characteristics, reservoir parameters and fracture development are systematically analyzed and studied. The standard of well selection and layer selection in corresponding fracturing is established, the main control factors of the shape and parameters of artificial fractures are analyzed, and the optimum fracturing design optimization scheme of reservoir is established, which provides an effective technical means for the adjustment and tapping of remaining oil in Xingliu Block. It has important practical significance for improving the development effect of the old area.
【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】：TE357.1;P618.13

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