While the global natural gas resource is depleting day by day,the energy demand is soaring and global environment protection has to be more seriously handled.

• 随着常规天然气资源不断减少,能源需求不断增加,特别是对环境保护要求的日趋严格,煤层气作为巨大的潜在资源在能源消费中的地位也逐步提高。