China has rich CBM resources in low rank coals.It is of great significance in the development of such resources.Key factors of development are to find out the CBM enriched zones.

• 我国低阶煤中煤层气资源丰富,开发低阶煤煤层气具有重要的意义,对于低阶煤煤层气开发来说,寻找煤层气富集区是开发的关键。