煤基质的孔隙性对流体流动影响极小，试井所得渗透率反映的是割理系统的渗流能力。
The matrix pores in coal play a little role in fluid flow, therefore the permeability derived from well test is the reflection of the percolation flow capacity in cleat system.
讨论了伤害煤层渗透率的两大因素：压裂液堵塞煤层割理； 煤基质吸附压裂液而膨胀。
Blockage of coal seams by fracturing fluids (FFs) and swelling of coal matrix owing to FF adsorption are discussed and considered to be the basic factors for coalbed permeability damage.
煤层气在煤储层中的扩散是指从煤基质孔隙表面上解吸的煤层气运移到割理系统的主要过程。
The diffusion of coalbed methane in coal reservoirs is defined that the main process of coalbed methane desorbed from coal matrix pore surface migrated to cleat system.
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