萨南油田开发区二类油层聚驱层系的确定与组合方式研究

发布时间：2018-06-01 03:41

本文选题：二类油层 + 聚驱开发　；参考：《吉林大学》2015年硕士论文

【摘要】：本文依据聚驱开发理论以及聚驱实践经验,同时将石油地质理论、测井理论及三维构造建模和储层精细描述技术进行综合应用,并针对萨南油田二类油层聚驱层系的组合以及开发方式进行了系统的科学研究。为了使二类油层提高采收率,在研究过程中针对萨南油田南三区、南四-八区二类油层河道砂发育规模明显变小,小层数目多,单层厚度渐薄、渗透率降低等储层特点,首先经过对精细地质的全面再研究,深化了储层的发育特征认识,掌握油层厚度分布状况以及非均质性,进一步落实剩余油的分布。其次,建立了研究区二类油层的选层标准,综合考虑层系组合的多种影响因素,对研究区域的聚驱上返二类油层的层系组合问题上进行了深入的研究,对上返层系厚度及注采井距进行了确认,落实二类油层开发潜力。最后,在基于取心井的渗透率数据统计分析和室内聚驱试验的前提下,依据对油层连通性评价与储量控制程度分析,确定了不同分子量聚合物与油层空气渗透率的匹配关系,优化了现有注入方式及段塞,确保了聚驱开发效益最大化,实现了产量有效接替,为今后采用聚驱开发技术形成了可靠的技术支撑。
[Abstract]:Based on the development theory of polymer flooding and the practical experience of polymer flooding, the petroleum geology theory, logging theory, 3D structural modeling and reservoir fine description technology are applied in this paper. A systematic and scientific study on the combination and development mode of the secondary reservoir polymer flooding system in Sanan Oilfield is carried out. In order to improve the recovery factor of the second class oil reservoir, in the course of the study, in view of the reservoir characteristics such as the sand development scale of the second class oil reservoir in the South 3 area and the South 4-8 area of the South fourth to eighth area is obviously smaller, the number of the small layers is more, the thickness of the single layer is thinning, and the permeability is decreasing, etc. Firstly, through the comprehensive study of fine geology, it deepens the understanding of reservoir development characteristics, grasps the distribution of reservoir thickness and heterogeneity, and further implements the distribution of remaining oil. Secondly, the layer selection standard of the second class oil layer in the study area is established, and considering the various factors affecting the formation combination, the problem of the formation combination of the second kind of oil layer in the study area is deeply studied. The thickness and injection-production spacing of upper back layer system are confirmed and the development potential of the second class reservoir is realized. Finally, based on the statistical analysis of permeability data of coring wells and laboratory polymer flooding test, according to the evaluation of reservoir connectivity and the analysis of reserve control degree, the matching relationship between different molecular weight polymers and reservoir air permeability is determined. The existing injection mode and slug are optimized to ensure the maximum benefit of polymer flooding development and the effective replacement of production is realized. The reliable technical support is formed for the adoption of polymer flooding development technology in the future.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357

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