Pulsed Nuclear Magnetic Resonance Studies of Porosity, Movable Fluid, and Permeability of Sandstones

作者：A. Timur · 发表于：Journal of Petroleum Technology · 年份：1969 · DOI：10.2118/2045-pa · 被引用次数：399 · 研究领域：NMR spectroscopy and applications、Hydraulic Fracturing and Reservoir Analysis

The NMR methods described here provide a rapid, nondestructive determination of porosity, movable fluid, and permeability of sandstone. Introduction Fluid flow properties of porous media have long been of interest in such varied disciplines as geology, geophysics, soil mechanics, and chemical, civil, and mechanical engineering. This interest has resulted in numerous models of porous media that have been proposed, tested, and found to be useful under, at proposed, tested, and found to be useful under, at best, only special circumstances. A critical review of most of these models is given by Scheidegger. The application of each new tool to the study of porous media has helped to test some of the existing porous media has helped to test some of the existing theories and to form neat ideas based on the new parameters being measured. In the application of parameters being measured. In the application of nuclear magnetic resonance (NMR) techniques to the study of the properties of fluids in porous media, the theoretical studies of Korringa et al. resulted in a model for the relaxation of spin polarization of protons in a hydrogenous fluid in a pore of a solid. protons in a hydrogenous fluid in a pore of a solid. Seevers verified this model, established a method for measuring the surface-to-volume-ratio distribution in a porous medium, and proposed a technique for determining specific permeability in sandstones. In the present investigation, the uses of NMR methods are extended and ...