核磁共振在致密砂岩、页岩储层物性计算中的应用

Application of NMR in Physical Properties Calculation of Tight Sandstone and Shale Reservoirs

梳理了核磁共振测井在常规砂岩物性预测中的应用特点,剖析了核磁共振测井在致密砂岩和页岩储层物性计算中的应用现状,对比分析了常规砂岩储层与致密砂岩、页岩的核磁共振测井T2谱特征及物性计算方法。研究认为,针对非常规储层T2谱特征及物性计算要求,加强岩石物理实验研究,建立核磁共振测井T2谱与储层物性参数的非线性数学关系具有重要意义。

Summarizes the application characteristics of NMR logging in the physical property prediction of conventional sandstone, analyzes the application status of NMR logging in the physical property calculation of tight sandstone and shale reservoirs, and compares and analyzes the T2 spectrum characteristics and physical property calculation methods of NMR logging between conventional sandstone reservoirs and tight sandstone and shale. According to the study, it is of certain significance to strengthen the experimental study of petrophysics and establish the nonlinear mathematical relationship between the T2 spectrum of NMR logging and the physical parameters of unconventional reservoir in view of the characteristics and physical properties calculation requirements.