S区块三元复合驱油机理及应用研究

发布时间：2018-05-17 21:54

  本文选题：S区块 + 三元复合驱　； 参考：《东北石油大学》2017年硕士论文

【摘要】：S区块油藏厚度较大,其中的厚油层主要是由各种河流砂体相互叠置形成,这些河流砂体成因较多,主要的形成类型由弯曲分流河道砂、辫状河砂体、低弯曲分流河道砂组成。在S区块中这些形成类型占比较大,而且油层的厚度和连续性等形成形式多样化,严重的影响了S区块油藏开发。在S区块油藏的开发过程中,在油藏含水较高的情况下,油层的剩余油含量较大,依旧具有较大的开发和挖掘潜力。本文主要针对S区块油藏为研究对象,首先进行了三元复合驱机理的研究,其次对各个驱油体系进行分析,并对驱油体系的影响因素进行分析,然后通过碱表活剂疏水缔合聚合物流体流变性、粘度、界面张力、剪切性能等进行讨论,探讨了各个药剂体系在驱油体系中的协同效应,其次,对S区块三元复合驱体系的界面张力进行分析和研究。基于室内岩心驱替实验模型,开展了S区块三元复合驱体系的驱油实验研究,对S区块三元复合驱体系驱油过程中的影响因素进行分析和研究,分别对S区块三元复合驱体系的界面性能、渗透率、润湿性等影响驱油效率因素进行分析,最后以S区块三元复合驱现场施工为例进行分析,对S区块三元复合驱体系开发效果及潜力进行分析,针对开发效果对施工方案进行优化。
[Abstract]:The thick reservoir in S block is mainly formed by superposition of various river sand bodies. The main formation types of these river sandbodies are curved distributary channel sand, braided river sand body and low bend distributary channel sand. In the S block, these formation types are relatively large, and the formation forms such as the thickness and continuity of the reservoir are diversified, which seriously affects the development of the oil reservoir in the S block. In the development process of S block oil reservoir, the remaining oil content of oil layer is large, and it still has great potential of exploitation and mining under the condition of high water cut in the reservoir. In this paper, the main research object is S block reservoir. Firstly, the mechanism of ASP flooding is studied. Secondly, each flooding system is analyzed, and the influencing factors of flooding system are analyzed. Then, through the discussion of rheology, viscosity, interfacial tension and shear property of hydrophobically associating polymer, the synergistic effect of each agent system in oil displacement system is discussed. The interfacial tension of ASP flooding system in S block is analyzed and studied. Based on the laboratory core displacement experimental model, the flooding experiment of ASP flooding system in S block is carried out. The influencing factors in the flooding process of ASP flooding system in S block are analyzed and studied. The factors affecting oil displacement efficiency, such as interface performance, permeability, wettability and so on, are analyzed respectively. Finally, the field operation of ASP flooding in S block is analyzed as an example. The development effect and potential of S block ASP flooding system are analyzed, and the construction scheme is optimized according to the development effect.
【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】：TE357.46
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本文编号：1903007