Only in coal bed methaneaccumulation area with higher saturation and permeability is the favorable area for coal bed methane exploration and development.
并认为只有在含气饱和度较高的煤层气藏，且具有较高的渗透率，才能成为煤层气勘探的有利区块。
2
Enrichment and accumulation of coalbed methane in low rank coal have their own unique characteristics.