世界非常规天然气的储量及开采现状

非常规天然气是指致密砂岩气（TSG）、煤层气（CBM）、页岩气（SG），天然气水合物、高压气（水溶气）和深层气，世界非常规天然气资源潜力非常巨大，具有广阔的开发前景．文中详细阐述了非常规天然气的组成和定义，以及致密砂岩气、煤层气、页岩气和天然气水合物在世界的分布、储量和开采现状等，认为非常规天然气的开采到目前为止还是比较有限．新的技术还需进一步研究，而且开采过程中所面临的储层损害和环境问题也有待解决．但随着油气勘探开发技术的进一步发展，必然会实现非常规天然气的有效开采，这对于满足目前日益增长的能源需求越来越重要，非常规天然气必将成为新一代环保、高效的优质替代能源。

Reserves and development status of global unconventional natural gas

Unconventional natural gas includes tight sandstone gas, coalbed methane, shale gas, gas hydrates, high-pressure gas （water soluble gas） and deep gas. There is a great potential of unconventional gas resource in the world, which means that the unconventional natural gas has broad development prospects. This article focuses on the composition and definition of unconventional natural gas, and elaborates the distribution, reserves and production status of tight sand gas, coal bed methane, shale gas and gas hydrate in the world. It is believed that the development of unconventional gas is relatively limited so far, and new technologies remain to study. Meanwhile, we have to solve the problems such as reservoir damage and environmental aspects in the process of production. With the development of petroleum exploration and development technologies, the effective exploitation of unconventional natural gas will be realized, which plays an important role in meeting the growing energy needs. The unconventional natural gas will replace the conventional gas to become a new generation of green, high-quality alternative energy sources.