天然气组分及其碳同位素扩散分馏作用模拟实验研究

李剑,刘朝露,李志生, 胡国艺, 严启团,单秀琴,马成华, 王春怡

doi:10.11764/j.issn.1672-1926.2003.06.463

天然气地球科学 >

2003 , Vol. 14 >Issue 6: 463 - 468

DOI: https://doi.org/10.11764/j.issn.1672-1926.2003.06.463

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天然气组分及其碳同位素扩散分馏作用模拟实验研究

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1.中国石油勘探院廊坊分院，河北廊坊065007；2. 中国矿业大学(北京），北京100083

李剑(1966-)男，河北怀安人，高级工程师，主要从事地球化学和天然气成藏研究.

收稿日期: 2003-09-22

修回日期: 2003-09-26

网络出版日期: 2003-12-20

基金资助

国家重点基础研究发展规划项目(编号：2001CB20913)资助.

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EXPERIMENT INVESTIGATION ON THE CARBON ISOTOPE AND COMPOSITIONFRACTIONATION OF METHANE DURING GAS MIGRATION BY DIFFUSION

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1. Langfang Branch of Research Institute of Petroleum Exploration and Development, Petrochina, Langfang 065007, China;
2. China University of Mining and Technology (Beijing), Beijing 100083, China

Received date: 2003-09-22

Revised date: 2003-09-26

Online published: 2003-12-20

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摘要

为了探讨扩散引起的天然气组分及其碳同位素的分馏效应与岩石物性之间的关系,建立了相应的扩散分馏作用地质模式。通过自行设计的天然气成藏物理模拟仪,选择了不同物性的岩芯及其组合进行了天然气组分及其碳同位素扩散分馏作用模拟实验。实验研究结果表明:岩石的孔隙度和渗透率越低,扩散运移引起的分馏效应越明显;乙烷以上的重烃碳同位素几乎不发生分馏作用,但其组分组成仍存在一定程度的分馏现象。利用天然气组分及其碳同位素的上述变化规律,可以追踪天然气的运移路径,也可用于气源对比研究。

关键词： 天然气; 同位素; 扩散; 分馏作用; 模拟实验

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李剑,刘朝露,李志生, 胡国艺, 严启团,单秀琴,马成华, 王春怡 . 天然气组分及其碳同位素扩散分馏作用模拟实验研究[J]. 天然气地球科学, 2003 , 14(6) : 463 -468 . DOI: 10.11764/j.issn.1672-1926.2003.06.463

Abstract

Based on the equipment designed and developed by ourself, the experiment has been conducted to investigate on the carbon isotope fractionation of methane during gas migration by diffusion through sedimentary rocks with different chacracteristics. The study indicated, the lower the porosity and the permeability,the higher the fractionation. As for C-{2++}, no measurable fractionation was observed while the composition fractionation somewhat exsited. It is very significant not only for investigation on the path of gas migration but also for research of gas-correlation.

Key words： Natural gas; Carbon isotope; Diffusion; Fractionation; Simulation.

参考文献

［1］李剑，罗霞，李志生，等. 对甲苯碳同位素值作为气源对比新指标的新认识［J］.天然气地球科学，2003，14(3):177-180.
［2］ Schoell. Genetic characterization of natural gases［J］.AAPG Bulletin，1980，64:2225-2238.
［3］ Stahl. Carbon characterization of natural gases［J］. Chem. Geology，1975，20:121-149
［4］ Faber. Geochemical surface exploration for hydrocarbons in north sea［J］. AAPG Bulletin，1979，63(3)：363-386.
［5］ Fuex. The use of stable carbon isotopes in hydrocarbon exploration［J］. Jour.Geochem Exploration, 1979, 7:55-188.
［6］ Prinzhofer A, Hue A. Genetic and post-genetic molecular and isotopic fractionation in natural gas［J］. Chem. Geol., 1995，126：281-290.
［7］ Prinzhofer A, Pernaton E. Isotopically light methane in natural gas: Bacterial imprint or diffusive fractionation［J］.Chem. Geol., 1997, 142:193-200.
［8］ Galimov A13C isotope enrichment effect in methane carbon in the course of its filtration through rocks［J］. Geochem. Internet, 1967, (4):1180-1181.
［9］ Lebedev, Syngayevskij. Carbon isotope fractionation in sorption process［J］.Geochem. Internet, 1971，(8):460.
［10］ Gunter Isotope fractionation during gas chromatographic seperation［J］. J. Chromat Sci., 1971,9:191-194.
［11］陈安定.陕甘宁盆地中部气田奥陶系天然气的成因和运移［J］. 石油学报，1994，15(2):1-10.
［12］Zhang Tong wei. Experimental investigation on the carbon isotope fractionation of methane during gas migration by diffusion through sedimentary rocks at elevated temperature and pressure［J］. Geochimica.Cosmichimica Acta,2001,65(16):2723-2742.

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