• 中文核心期刊
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  • RCCSE中国核心学术期刊

不同注氮压力置驱煤层甲烷试验中的机理分析

杨宏民, 冯朝阳, 陈立伟

杨宏民, 冯朝阳, 陈立伟. 不同注氮压力置驱煤层甲烷试验中的机理分析[J]. 煤矿安全, 2017, 48(2): 145-148.
引用本文: 杨宏民, 冯朝阳, 陈立伟. 不同注氮压力置驱煤层甲烷试验中的机理分析[J]. 煤矿安全, 2017, 48(2): 145-148.
YANG Hongmin, FENG Zhaoyang, CHEN Liwei. Mechanism Analysis on Experiment of Injecting Nitrogen to Displace Coal Seam Methane Under Different Pressure[J]. Safety in Coal Mines, 2017, 48(2): 145-148.
Citation: YANG Hongmin, FENG Zhaoyang, CHEN Liwei. Mechanism Analysis on Experiment of Injecting Nitrogen to Displace Coal Seam Methane Under Different Pressure[J]. Safety in Coal Mines, 2017, 48(2): 145-148.

不同注氮压力置驱煤层甲烷试验中的机理分析

Mechanism Analysis on Experiment of Injecting Nitrogen to Displace Coal Seam Methane Under Different Pressure

  • 摘要: 通过煤层注气物理模拟试验,对0.6、1.0、1.4 MPa压力下的注氮气置驱煤层甲烷的机理进行分析。结果表明:注气试验前期,氮气被煤体吸附并置换出煤中甲烷,随着氮气突破腔体,氮气的驱替作用也开始宏观表现出来,试验过程中的宏观现象表现出了注入氮气的置换、驱替作用。从微孔隙中甲烷的解吸角度来讲,注入氮气的稀释扩散作用也是注氮气置驱煤中甲烷的机理之一。通过对注氮气置驱甲烷的机理进行分析,总结出了注入弱吸附性气体置驱煤层甲烷的机理。
    Abstract: Through the physical simulation experiments of gas injection in coal seam, the mechanism of injecting nitrogen to displace coal seam methane under pressure of 0.6 MPa, 1.0 MPa,1.4 MPa is analyzed. The analysis of experiment results show that at the early stage of gas injection experiment, the injected nitrogen is adsorbed by coal and the methane in coal is replaced. When the injected nitrogen breaks through the box, the displacement effect of nitrogen appears. The macroscopic phenomena of the experiment show the displacement and replacement effect of injected nitrogen. But starting from the methane desorption of micro pore, dilution and diffusion effect could be one of the mechanisms of nitrogen injection to displace coal seam methane. Through the analysis of injecting nitrogen to displace coal seam methane, the mechanism of injecting weak adsorption gas to displace coal seam methane is concluded.
  • [1] Clarkson C R., Bustin R M. Binary gas adsorption / desorption isotherms: effect of moisture and coal composition upon carbon dioxide selectibity over methane [J].International Journal of Coal Geology, 2000,42(4): 241-272.
    [2] 杨宏民.井下注气驱替煤层甲烷机理及规律研究[D].焦作:河南理工大学,2010.
    [3] 杨宏民,张铁岗,王兆丰,等.煤层注氮驱替甲烷促排瓦斯的试验研究[J].煤炭学报,2010,35(5):792-796.
    [4] 杨宏民,魏晨慧,王兆丰,等.基于多物理场耦合的井下注气驱替煤层甲烷的数值模拟[J]. 煤炭学报,2010(S1): 109-114.
    [5] Krooss B M , Bergen Fvan , Gensterblum Y. High pressure methane and carbon dioxide adsorption on dry and moisture-equilibrated Pennsylvanian coals[J]. International Journal of Coal Geology, 2002,51(2): 69-92.
    [6] 崔永君.煤对CH4、N2、CO2及多组分气体吸附的研究[D].北京:煤炭科学研究总院,2003.
    [7] 吴世跃,郭勇义.关于注气开采煤层气机理的探讨[J].太原理工大学学报,2000,31(4):361-363.
    [8] 徐龙君,刘成伦,鲜学福.注入增产法提高煤层气采收率的理论探讨[J].重庆大学学报,2000,23(6):42.
    [9] 王剑光,佘小广.注气驱替煤层气机理研究[J].中国煤炭,2004,30(12):44-46.
    [10] 马志宏.注入二氧化碳和氮气驱替煤层气机理的试验研究[D].太原:太原理工大学,2000.
    [11] 张遂安,霍永忠,叶建平,等.煤层气的置换解吸试验及机理探索[J].科学通报,2005,50(S1):143-146.
    [12] 吴世跃,郭勇义.注气开采煤层气增产机制的研究[J].煤炭学报,2001,26(4):199-203.
    [13] Xiaojun Cui, R. Marc Bustin, Gregory Dipple. Selective transport of CO2, CH4, and N2 in coals: insights from modeling of experimental gas adsorption data[J]. Fuel,2004(83): 293-303.
    [14] 唐书恒.晋城地区煤储层特征及多元气体的吸附解吸特征[D].徐州:中国矿业大学,2001.
    [15] 杨磊.氦气压气机基本特性及叶栅性能试验[D].哈尔滨:哈尔滨工程大学,2007.
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出版历程
  • 发布日期:  2017-02-19

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