页岩孔隙结构及多层吸附模型的研究

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。

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

Shale gas refers to unconventional n atural 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.