低渗油藏低频振动辅助表面活性剂复合驱油机理研究

项目名称： 低渗油藏低频振动辅助表面活性剂复合驱油机理研究

项目编号： No.51274229

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 蒲春生

作者单位： 中国石油大学（华东）

项目金额： 75万元

中文摘要： 由于低渗、特低渗油藏注水压力高，水驱效率低，低频振动和表面活性剂都可在一定程度上提高低渗油藏的水驱油效率。前期室内动态模拟实验和矿场试验表明，低频振动与表活剂有机地结合具有明显的协同效应，可显著提高低渗油藏水驱效率。当前，对该技术复合作用微观动力学机理方面研究较少，对低频振动条件下多孔介质中油水两相渗流动力学机理以及低频波动物理场与表面活性剂驱油之间协同效应机制等基础问题缺乏充分的认识，致使矿场应用效果不稳定。本课题将系统研究低频振动对低渗孔隙介质中单个油滴、单相和油水两相流动影响的动力学机制，分析振动参数对各渗流物理场的影响规律。在此基础上，结合表面活性剂驱油机理，利用自行研制的波动驱油实验装置进行波动-表面活性剂复合驱油静、动态模拟实验，探索低频振动波对表面活性剂驱油协同作用的动力学机制，初步揭示影响振动-表面活性剂复合驱油效果主控因素和相关规律，为工艺方案优化设计提供理论依据。

中文关键词： 低渗油藏；表面活性剂；低频振动；复合驱油机理；

英文摘要： Because of high injection pressure,low flooding efficiency， both low frequency vibration and surfactant can improve water displacement efficiency in low permeability reservoirs at a certain extent. It can be indicated from the earlier laboratory dynamic simulation experiments and pilot field tests that the combination of low frequency vibration and surfactant has significant coordination effect, which can improve the water flooding efficiency significantly. Now, because of rare study on the micro dynamic mechanism of the coposite technology, and not yet well known about dynamic mechanism of oil-water two phase flow in the porous medium under vibration condition and composite mechanism between vibration and surfactant flooding and so on, the application effects in field tests were unstable. In this project, the influence of vibration on oil droplet, single-phase flow and oil-water two-phase flow in low permeable porous medium as well as the mechanism will be studied scientifically,then the influence of vibration parameters on this process will also be analyzed. On this basis,combining with the mechanism of surfactant flooding, The static and dynamic experiments with vibration and surfactant will be conducted by using the Wave Field Simulation Experiment Facility which was developed by ourselves.then,the dynami

英文关键词： low permeability reservoir；surfactant；low frequency vibration；composite displacement mechanism；