非常规油气储层的微观孔喉结构特征综述

A Summary of Microscopic Pore and Throat Structure Characteristics of Unconventional Oil and Gas Reservoirs

微观孔喉结构是决定非常规油气藏低孔隙度和低渗透率的主要因素,也是建立非常规油气藏的评价标准。它揭示了基本的地质特征,如石油和天然气的形成因素和浓缩规律。油气的运移和聚集受储层的孔喉结构的控制,其对油气采取有较大的影响。因此,为了详细描述非常规油气藏的微观渗流特征,研究非常规油气藏的微观孔喉结构具有重要意义。通过分析国内外有关非常规油气和微观孔喉结构特征的相关文献,作者从非常规油气研究的重要性出发,在微观孔喉结构表征方法、孔喉特征参数、孔喉结构对渗流特征影响等方面加以了系统阐述。

Micropore throat structure is the main factor that determines the low porosity and low permeability of unconventional oil and gas reservoirs,and it is also the evaluation standard for establishing unconventional oil and gas reservoirs.It reveals basic geological features such as the formation factors and concentration rules of oil and gas.The migration and accumulation of oil and gas are controlled by the pore throat structure of reservoir,which has great influence on oil and gas taking.Therefore,in order to describe the microscopic percolation characteristics of unconventional oil and gas reservoirs in detail,it is of great significance to study the microscopic pore throat structure of unconventional oil and gas reservoirs.Based on the analysis of domestic and foreign literatures related to unconventional oil and gas and microstructure characteristics of pore throats,this paper systematically expounds the characteristics of microstructure of pore throats,characteristic parameters of pore throats and the influence of pore throats on percolation characteristics from the perspective of the importance of unconventional oil and gas research.