天然气运移物理模拟实验及其结果  

PHYSICAL MODELING TESTS AND RESULTS OF NATURAL GAS MIGRATION

作　　者：史基安[1] 卢龙飞[1] 王金鹏[1] 王琪[1] 王雷[1] 

机构地区：[1]中国科学院兰州地质研究所气体地球化学重点实验室

出　　处：《天然气工业》2004年第12期32-34,共3页Natural Gas Industry

基　　金：中国科学院知识创新工程重要方向项目 (KZCX3-SW - 12 8);国家自然科学基金项目 (4 0 2 72 0 6 5;4 0 0 72 0 5 0 );国家重点基础研究发展规划项目 (G19990 4 3310 )资助

摘　　要：运用自行设计的天然气运移物理模拟装置 ,研究天然气在运移过程中所发生的组分分异和碳同位素分馏特征 ,目的是了解天然气在不同疏导层运移过程中所发生的组分及同位素变化规律。实验结果表明 ,天然气在运移过程中发生了比较明显的成分色层效应和碳同位素分馏现象 ,粘土矿物对天然气中重烃组分具有较强的束缚能力 ,甲烷碳同位素对运移条件及过程较为敏感。The characteristics of the component differentiation and carbon isotope fractionation of natural gas occurring in the process of migration were studied by applying a gas migration physical modeling device designed by the authors themselves, so as to see the changes in component and isotope in the process of gas migration along different carrying beds. The test results indicated that the composition Chromatographic effect and isotopic fractionation phenomenon took place in the process of gas migration; clay minerals had more powerful binding force to the heavy compenents in natural gas;and methane carbon isotope was relatively sensitive to the migration condition and process of natural gas. Such a modeling test is of great importance to understand further the mechanism of the changes in component and carbon isotope in the process of natural gas migration.

关 键 词：运移 碳同位素 物理模拟实验 分馏 分异 天然气 粘土矿物 组分 甲烷 变化机理 

分 类 号：P618.13[天文地球—矿床学]