石油储层渗流力学模型的研究进展及其本质

Abstract

渗流力学是研究流体在多孔介质中运动规律的科学，在很多科学和工程技术领域中得到广泛的运用。石油工程面临的对象变化很大，使得相关的渗流力学问题及相关模型繁多而复杂。本文对石油储层中的多种渗流力学问题进行了全面的分析，对其涉及的力学机制进行了深入研究，探讨了石油储层渗流力学基本模型，探明了石油工程中各种提高采收率技术(如化学驱油技术、微生物采油技术、气驱采油技术、热力采油技术等)所涉及渗流力学模型的本质，对采用不同井型(如直井、定向井、水平井等)开发方式时的渗流力学模型也进行了本质分析。结果表明，不论是何种技术环境，其渗流规律均可以表述为渗流力学基本方程在特殊条件下的改进模型。本文结果对研究新问题的渗流力学模型具有重要指导意义。 Percolation mechanics, a discipline that deals with fluid flow in porous media, has widespread applications in many aspects, especially in petroleum engineering. Due to include a range of objects, there are many various and complex seepage mechanics problems and related models in the petroleum engineering. Various percolation mechanics problems are comprehensively analyzed, and the internal mechanism of different types of fluid in different reservoir media is discussed in oil reservoir, such as polymer flooding, surfactant flooding, combination flooding, microbial enhanced oil recovery. The internal mechanism of percolation mechanics model in different type of well is also conducted. The results show that, in whichever technological factors, its laws of percolation are all able to be described as the modified models of percolation mechanical fundamental equation under special circumstance. The conclusion of this paper can provide a reference for new percolation mechanical models in the study of new subjects, as well as a forecast of the works on percolation mechanics in oil reservoir in the next stage.