页岩孔隙结构及多层吸附模型的研究

Study on pore structure and multi-layer adsorption model of shale

页岩气是指主体位于暗色泥页岩或高碳泥页岩中,以吸附态或游离态为主要赋存方式的非常规天然气。页岩孔隙结构复杂,一般以纳米孔隙占优势,用常规储层孔隙的表征方法难以解释美国的高产页岩气系统。因此,页岩纳米孔隙的表征成为制约页岩气资源评价的关键因素。就浅谈页岩孔隙结构及多层吸附模型等方面的研究。

Shale gas refers to unconventional natural gas,which is mainly located in dark shale or high carbon shale and mainly occurs in adsorbed or free state.The pore structure of shale is complex,and nano-pore is generally dominant.It is difficult to explain the high-yield shale gas system in the United States by conventional reservoir pore characterization methods.Therefore,the characterization of nanopore in shale has become a key factor restricting the evaluation of shale gas resources.In this paper,the pore structure and multi-layer adsorption model of shale are discussed.