The variation of medium pore diameter and porosity factor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs.
中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。
The permeability of Jiangsu oil field widely distributed including high, medium, low and ultra-low permeability.
江苏油田高、中、低及特低渗透储层均有。
The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China.
中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大；
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