收稿日期: 2014-02-26
修回日期: 2014-07-01
网络出版日期: 2015-03-10
基金资助
国家科技重大专项“我国油气剩余可采储量分布、增长潜力与开发理论”(编号:2011ZX05043-002)资助.
Shale Gas Flow Model in Matrix Nanoscale Pore
Received date: 2014-02-26
Revised date: 2014-07-01
Online published: 2015-03-10
吴剑，常毓文，梁涛，郭晓飞，陈新彬 . 页岩气在基质纳米孔隙中的渗流模型[J]. 天然气地球科学, 2015 , 26(3) : 575 -579 . DOI: 10.11764/j.issn.1672-1926.2015.03.0575
Matrix shale gas includes free gas stored in pores,adsorbed gas in pore walls,soluble gas in solid organic materials.Shale pores are nanometer and pore throat apertures are microport by literature investigation.Although shale matrix pores are very small and soluble gas diffusion is slow,surface to volume ratio is comparatively large,soluble gas quantity is substantial,soluble gas diffusion is very important.According to Javadpour flow theory,shale matrix is assumed as homogeneous rock particles,clay,kerogen reservoir.Shale gas migration is slippage under press force,Knudsen diffusion,adsorbed gas desorption and soluble gas diffusion combined effect,gas adsorption-desorption follows Langmuir's isotherm,then shale gas matrix pore flow model is lastly derived by infinitesimal method.
Key words： Shale gas; Flow unit; Nanopores; Flow model; Unconventional natural gas
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