Gas Transport Mechanisms in Micro- and Nano-Scale Matrix Pores in Shale Gas Reservoirs

被引：16
|
作者：
Zhong, Ying [1 ,2 ]
Zhang, Hao [1 ,2 ]
Shao, Zenbin [1 ,2 ]
Li, Kai [1 ]
机构：
[1] Chengdu Univ Technol, Sch Energy, Chengdu, Peoples R China
[2] Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu, Peoples R China
来源：
CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS | 2015年 / 51卷 / 05期
关键词：
gas transport mechanism; adsorption-desorption; slippage effect; Knudsen diffusion; water film; FLOW;
D O I：
10.1007/s10553-015-0638-1
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Shale gas can occur in both the adsorbed state and the free state inside pores ranging in size from 10-6 to 10-9. This paper reports the results of research on the mechanisms and characteristics of gas transport in shale gas reservoirs, which deviates from Darcy's law. The gas migration process is divided into migration in organic and inorganic matrix pores based on Knudsen number. The new models that are proposed for various flow modes take account of the effect of adsorption-desorption, slippage, Knudsen diffusion, and water saturation. The new flow models were modified with due regard for adsorption-layer thickness and water-film thickness on the pore walls. The new model constructed for diffusion flow can be used in designing and developing shale gas reservoirs.
引用
收藏
页码：545 / 555
页数：11
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