摘要
基于中石化三个主要勘探区资料统计,详细分析了煤岩显微组分对煤储层吸附能力的影响,探讨了其影响机理。发现研究区内煤的兰氏体积与镜质组含量关系中不是连续渐变的,在Ro>2.0%的阶段且惰质组含量大于30%时,煤样的兰氏体积仍大于30m3/t,表现为较高的吸附能力,指出在中石化三个研究区Ro>2%的煤储层中,在含气饱和度不是太低的情况下,镜质组含量的高低不影响煤层气的开采价值。本文的研究方法与结果为以后的勘探开发提供一定的借鉴作用。
Based on statistical data from three major prospecting areas of SINOPEC,the paper analyzed in detail the influence of petro-graphic maceral on adsorption capacity of coal reservoir and discussed the influencing mechanism. It was found that the relation between Longmiur volume of the coal and vitrinite content was not a continuous and gradual change within the studied area,and that when the content of inertinite was greater than 30%,the Longmiur volume was still greater than 30m3/t within the section of Ro2.0%,which indicated high absorption capacity. It pointed out that within Ro2% coal reservoir in the three studied areas of SINOPEC,when the gas saturation was not too low,the inertinite content does not affect the mining value of the coalbed methane. The method and results of this study will offer experiences for future prospecting and development work.
出处
《中国煤层气》
2011年第2期28-31,共4页
China Coalbed Methane
关键词
煤层气
煤储层
兰氏体积
含气性
CBM
coal reservoir
Langmuir volume
gas content
