煤孔隙的成因类型及其研究

以煤财显微组分和煤的变质与变形特征为基础，以较大量的扫描电镜观察结果为依据，将煤孔隙的成因类型划分为四大类（原生孔、外生孔、变质孔、矿物质孔）十小类。研究结果表明，煤孔隙的成因类型多，形态复杂，大小不等，各类孔隙都是在微区发育或微区连通，它们借助于裂隙而参与煤层气的渗流系统。孔隙的成因类型及其发育特征是煤储层生气储气和渗透性能的直接反映，颇具理论与实用研究意义。

Genetical type of proes in coal reservoir and its research significance

After a lot of observation with the use of scan electronic microscope, based upon maceral and characters of metamorphism and deform, the pores has been divided into four big types (primary pore, metamorphic pore, epigenetic pore, mineral pore) and ten little types in genesis. This study demonstrates that the coal pores are polygenous, polymorphous and all sizes, they only develop and connect within micra area. The pores can not migrate coalbed methane unless they connect with the fracture in coal reservoir. The research is of significance theoretically and practically.