摘要
煤体结构对于煤储层的精细评价、压裂改造、产能释放等具有重要的理论和实践意义。目前,煤体结构差异下组分和结构特征尚未明确,严重制约了深层煤层气的勘探开发效果。以鄂尔多斯盆地中北部8号煤层为研究对象,基于工业分析实验和多种孔隙结构的定量表征方法,明确了不同煤体结构煤的组分及结构差异。结果表明:煤的灰分随着煤体破碎程度增大而逐渐减小,固定碳、孔体积和孔比表面积均随着煤体破碎程度增大呈现逐渐增大的趋势。
The coal structure has important theoretical and practical significance for the fine evaluation of coal reservoirs,fracturing and productivity release.At present,the composition and structural characteristics of coal body structure differences are not yet clear,which seriously restricts the exploration and development effect of deep coalbed methane.The No.8 coal seam in the central and northern Ordos Basin is taken as the research object.Based on industrial analysis experiments and quantitative characterization methods of various pore structures,the composition and structural differences of coal with different coal body structures are clarified.The results show that the ash content of coal decreases gradually with the increase of coal crushing degree,and the fixed carbon,pore volume and pore specific surface area increase gradually with the increase of coal crushing degree.
作者
郭铀
孙昊
卢琛
张明达
徐光春
Guo You;Sun Hao;Lu Chen;Zhang Mingda;Xu Guangchun(School of Earth Science,East China University of Technology,Jiangxi,330013;Basic Geological Survey Institute of Jiangxi Geological Survey and Exploration Institute,Jiangxi,330030)
出处
《当代化工研究》
2025年第12期145-147,共3页
Modern Chemical Research
