Effect of Knudsen diffusion and Langmuir adsorption on pressure transient response in tight- and shale-gas reservoirs

Li Daolun; Xu Chunyuan; Wang John Yilin; Lu Detang

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Effect of Knudsen diffusion and Langmuir adsorption on pressure transient response in tight- and shale-gas reservoirs

机译：Knudsen扩散和Langmuir吸附对致密和页岩气储层压力瞬态响应的影响

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Klinkenberg number is not constant in tight- and shale-gas reservoir. We first derived an expression of b/p in Klinkenberg apparent permeability correlation based on Knudsen number, which is a function of mu/p in an isothermal shale-reservoir system. For pressure in [15 MPa, 30 MPa], mu/p changes slowly and is very small, and the permeability correction factor is 1.15 for 17 MPa, 1.14 for 20 MPa, 1.12 for 28 MPa for the case in this paper.

机译：在致密和页岩气储层中，克林肯贝格数不是恒定的。我们首先基于Knudsen数推导了Klinkenberg表观渗透率相关性中b / p的表达式，该表达式是等温页岩储层系统中mu / p的函数。对于在[15 MPa，30 MPa]中的压力，mu / p缓慢变化并且非常小，对于这种情况，渗透率校正因子对于17 MPa为1.15，对于20 MPa为1.14，对于28 MPa为1.12。

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《Journal of Petroleum Science & Engineering》 |2014年第null期|共9页
作者
Li Daolun; Xu Chunyuan; Wang John Yilin; Lu Detang;
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正文语种 eng
中图分类石油、天然气工业;
关键词
shale gas; knudsen diffusion; langmuir desorption; apparent permeability; PEBI grid;

机译：页岩气;努森扩散;朗格缪尔解吸;表观渗透率;PEBI网格;

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1. Effect of Knudsen diffusion and Langmuir adsorption on pressure transient response in tight- and shale-gas reservoirs [J] . Li Daolun, Xu Chunyuan, Wang John Yilin, Journal of Petroleum Science & Engineering . 2014,第Null期

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Effect of Knudsen diffusion and Langmuir adsorption on pressure transient response in tight- and shale-gas reservoirs

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