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天然气中氮的来源及塔里木盆地东部天然气中氮地球化学特征

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  • [1]石油大学(北京); [2]中国科学院资源环境科学信息中心; [3]中国科学院兰州地质研究所气体地球化学实验室; 甘肃兰州;

网络出版日期: 2003-06-20

THE ORIGIN OF MOLECULAR NITROGEN IN NATURAL GAS AND GEOCHEMICAL CHARACTERS OF MOLECULAR NITROGEN IN NATURAL GAS FROM EAST PART OF TARIM BASIN

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  • 1 Petroleum Universuity, Biejing 102249, China; 2 Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China; 3. The Scientific Information Center for Resources and Environment, Chinese Academy of Sciences, Lanzhou 730000, China

Online published: 2003-06-20

摘要

氮气 ( N2 )是天然气中最常见的非烃组分之一。天然气中的 N2 依其成因与来源特征总体可分为大气来源、源岩有机质的生物降解或热分解成因、沉积岩含氮矿物的高温热解成因、地壳深部和上地幔来源等。不同来源 N2 的地球化学特征有一定的差异。对塔里木盆地天然气中 N2 的地球化学特征研究表明 ,该盆地天然气中的 N2 主要来源于有机质的热解 ;由于源岩热演化程度和母质类型的不同而造成该盆地内不同地区天然气的 N2 同位素组成具有明显差异。

本文引用格式

陈践发;朱岳年; . 天然气中氮的来源及塔里木盆地东部天然气中氮地球化学特征[J]. 天然气地球科学, 2003 , 14(3) : 172 -176 . DOI: 10.11764/j.issn.1672-1926.2003.03.172

Abstract

Molecular nitrogen (N 2) is one of most common non hydrocarbon components in natural gas reservoirs The nitrogen in natural gas can be classified, according to its origin, into atmospheric N 2, thermo pyrogenic N 2 from organic matter in source rock, metamorphic N 2 from ammonium clay minerals and primordial N 2 from deep crust and upper mantle The origins of N 2 are identified with its isotopic composition and other geochemical features. According to geochemical characters.

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