用核磁共振测井资料评价储层的孔隙结构

核磁共振测井作为一种全新的测井方法可以直观而准确地提供储层的有效孔隙度，渗透率，束缚水饱和度等参数，而且能够通过Ｔ２ｃｕｔｏｆｆ值区分可动流体体积和毛管束缚流体体积，进而深入地反映储层的孔隙结构。本研究以半渗透隔板的毛管压力资料为基础，建立了核磁共振中振测井的Ｔ２几乎平均值与孔隙结构参数之间的关系，并建立了应用核磁共振时以岩心分析资料为基础，核磁共振测井资料为中介，利用常规测井计算的渗透率和孔隙度

Evaluating Porous Structure of Reservoir with MRIL Data

As a new well logging technology, MRIL(Magnetic Resonance Imaging Logging)can not only provide effective porosity, permeability, irreducible water saturation and other parameters, but also distinguish movable fluid volume from irreducible one with T 2 cutoff, with which we are able to deeply study porous structure. Based on capillary pressure data from semi permeable clapboard, relationship between T 2 geometric average value and porous structure parameters can be obtained, and also a method to determine porous structure parameters be found by using MRIL data. Our research shows that T 2 distribution spectrum is closely related to porous structure. Meanwhile,according to core analysis data and MRIL data, we finally give the relation between ratio of permeability to porosity from conventional curves and porous structure parameters, which is very important in production.