利用核磁共振T_1-T_2谱技术研究页岩油可动性  

Using MRI T_1-T_2 Technology to Research the Mobility of Shale Oil

作　　者：李骥远 卢双舫[1] 

机构地区：[1]中国石油大学(华东),山东青岛266500

出　　处：《中国锰业》2017年第4期169-172,共4页China Manganese Industry

基　　金：国家自然科学基金项目(40671063)

摘　　要：基于核磁共振T_1-T_2相关谱技术,建立核磁共振响应特征与岩石热解参数的联系。利用初步建立的划分标准提取岩石样品核磁共振响应中的各组分信号,得到核磁共振T_1-T_2谱中各组分信号与对应的地化参数之间呈现正相关关系,而其中可动有机质信号强度与各样品的含油性指数(S_1/TOC×100)同样表现出极好的线性关系,说明核磁共振技术在表征泥页岩有机质含量方面具有可行性。经过干酪根提取以及热解参数计算后,量化得到松辽盆地北部地区页岩油可动下限约为S_1/TOC×100=102.36 mg/g。Based on NMR T_1-T_2 correlation spectroscopy technique,the relationship between NMR response characteristics and rock pyrolysis parameters was established. Using an established criteria with extracting the signal of the NMR response of rock samples,a positive correlation between the signal of each component in the T_1-T_2 spectrum and the geochemical parameters was obtained. While the signal intensity of mobile organic matter also shows a good linear relationship with the oil content index of each sample（ S_1/TOC·100）,it means that the NMR technology is feasible in the characterization of the organic matter content of shale. After the extraction of kerogen and the calculation of pyrolytic parameter,the movable lower limit of shale oil in northern Songliao Basin was quantified as S_1/TOC × 100 = 102. 36 mg/g.

关 键 词：页岩油 可动性 核磁共振 热解参数 

分 类 号：P618.13[天文地球—矿床学]