低渗油藏非均质性对采收率的影响因素研究

摘要：低渗透油藏的开发技术已成为我国油气开采领域的重要研究内容，而低渗透油藏非均质性是影响其最终采收率的主要因素。为此，从典型油藏地质模型出发，通过建立油藏数值模拟机理模型，筛选了油层厚度、隔层厚度、渗透率、渗透率各向异性系数为评价指标，分析了单因素及其组合对油藏采收率的影响，研究表明储层渗透率及渗透率各向异性是影响低渗透油藏采收率的最主要因素。研究结果对低渗油藏开发的调整以及后期挖潜等方面具有重要的指导意义。

Mechanism Research of the Impact of Heterogeneity on the LowPermeability Reservoir Recovery

Abstract：How to develop low-permeability reservoirs has become the key question in the field of oil and gas production.However，the heterogeneity of low-permeability reservoirs is the main factor affecting the oil recovery. Therefore，a reservoirmechanism model，based on the reservoir geological model presented in this paper，is used to analyze the influence of therespective and combined elements on oil reservoir recovery，with reservoir thickness，interlayer thickness，permeability andpermeability anisotropy coefficient as evaluation variables. The result reveals that the permeability and permeability anisotropycoefficient are the two main factors. This research is significant in adjusting and making full use of potentialities in later stageof oil and gas development.