非常规天然气成藏特征

随着油气资源的日趋紧缺和对于能源安全的考虑,世界各国都在加强对非常规油气藏的研究。本文从成藏要素、成藏机理方面介绍了页岩气、煤层气及深盆气藏的基本特征和研究现状。页岩气和煤层气属于自生自储的天然气藏,而深盆气藏是近源岩型天然气藏,与常规气藏相比三者都具有低孔、低渗、压力异常、勘探开发难度较大的特点。对页岩气、煤层气及深盆气藏的成藏要素和成藏机理的深入研究,旨在为我国非常规气藏的勘探开发提供理论依据。

Reservoir characteristics of unconventional gas

As the short supply of oil and gas resources, and based on the consideration of energy security, all the countries in the world are strengthening the investigation of unconventional oil and gas reservoir. The basic characteristics as well as research status of shale gas, coal - bed gas and deep basin gas reservoir are introduced in aspects of accumulation factors and formation mechanism. Shale gas and coal - bed gas reservoir belong to self - generated and self - stored natural gas reservoir, while deep basin reservoir is near source rock natural gas reservoir. Compared with the conventional gas reservoir, the three type of unconventional gas reservoir are characterized by low porosity, low permeability, abnormal pressure and great difficulty in exploration and exploitation. The thorough research on the three accumulation factors and formation mechanisms will lay a good theoretical foundation on our country＇ s unconventional gas reservoir exploration and development.