作为非常规能源的页岩气越来越受到各国政府和业界重视，页岩气资源评价和开发的难度主要源自微细孔隙结构特征。由于核磁共振（NMR）对原子尺度的局域环境有着高度敏感性，相比于传统的介质孔隙表征方法，NMR有着无可替代的优势，且作为工作基础和前期积累，本小组已初步实现页岩纳米孔隙的冻融1H NMR测量。本项研究以129Xe、1H为探针，研发快速准确、简单稳健、成本低廉、易于操作的NMR实验方法来准确测量页岩纳米孔隙，并建立综合解释模型来表征页岩孔隙结构、动力学特征和宏观油气藏参数等，为页岩气藏资源评价和开发提供坚实的基础，并具学科交叉的优势。

As the important un-conventional energy resource, the development and utilization of shale gas play a strategic role in the world. However, the very fine porous structures in gas shale pose large challenges. Because of the high sensitivity of nuclear magnetic resonance (NMR) to local environments at the atomic and molecular level, compared with conventional characterization methods for porous media such as MIP and BET, NMR possesses greater advantages and potential. The applicants have already developed the 1H NMR cryoporometry method to measure and characterize nano-porous structures in shale. In this proposal, using 129Xe and 1H as the probes, we will spare no efforts in developing comprehensive NMR methods to characterize nano-porous structure in shale, which will be efficient, robust, cost-saving, portable and easily operative, especially will initiate the novel 129Xe NMR method in low field (Earth Field). With the multiple sets of NMR parameters from different kinds of NMR measurements, we will establish the comprehensive interpretative models to derive at the parameters about porous geometry and dynamics in shale, and obtain the reservoir parameters such as porosity, capillary pressure and permeability. Based on these studies, a solid foundation will be laid for the assessment and utilization of gas shale resource, and such methodology will be also valuable for geological field work.