摘要
应用氮气吸附法能够较好的测量煤岩比表面和微孔径,对韩城煤岩比表面和微孔径测试结果表明,煤岩的比表面在0.17～0.55m2/g;孔半径分布峰值2～6nm。煤岩孔径小和比表面大的特征易对压裂液产生吸附滞留作用,给甲烷的解吸-扩散-渗流能力带来潜在伤害。
Application of nitrogen adsorption could be better able to measure the surface area and characteristics of micro-aperture of coal.Results of specific surface area and micro pore size test on Hancheng coal show that ：the surface area of coal is 0.17~0.55m2/g;pore radius distribution peak is between 2~6nm.micro-aperture and large specific surface characteristics of coal would be able to produce adsorption and retention effect to solid-liquid phase of the fracturing fluid,which would bring potential harm to methane desorption-proliferation-percolation capacity.
出处
《煤炭技术》
CAS
北大核心
2011年第3期137-139,共3页
Coal Technology
基金
国家重大专项<煤层气完井与高效增产技术及装备研制>项目(2008ZX05037-003)资助
关键词
氮气吸附法
煤岩储层
比表面
微孔径
压裂液
储层伤害
nitroge adsorption method
coal reservoir
specific surface
micro-aperture
fracturing fluid
reservoir damage
