Characterization of pore structures and gas transport characteristics of Longmaxi shale | |
Cao GH(曹高辉); Lin M(林缅); Ji L(姬莉); Jiang WB(江文滨); Yang M(杨明) | |
发表期刊 | Fuel |
2019-08 | |
卷号 | 258页码:10.1016/j.fuel.2019.116146 |
ISSN | 0016-2361 |
摘要 | Multiscale pore structures of shale conjunctionally determine the gas storage and transport properties of gas shale reservoirs. To investigate the complex pore structures and gas transport in the ultra-tight porous media, a combination of petrophysical and scanning measurements is adopted in this study. Five shale samples of the main productive layers from four wells (Long 1(1) sub-members of Longmaxi Formation) in southeast Sichuan Basin, China are analyzed. Based on scanning electron microscope (SEM) image, different types of organic pores and inorganic pores are quantitatively analyzed. A method for identification of organic and inorganic pores from SEM images is developed. And a comparison between the pores identified from SEM and gas adsorption (N-2 and CO2 adsorption) is conducted. Results show that the main part of inorganic pores are mesopores, and the organic pore size distributions tend to be lognormal with the peak pore size from 10 nm to 30 nm. Results also show that the gas storage space obtained by SEM is several times to several tens of times larger than that obtained by gas adsorption method. The permeability of OM and shale cores is also compared. The permeability is strongly anisotropic and all those samples show a significant non-Darcy effect. Finally, the relationship between the pore structures and gas transport behavior is studied, and the high quality shale samples are identified considering their gas storage and transport behaviors. |
关键词 | Shale Pore structure Anisotropic permeability Longmaxi Formation |
DOI | 10.1016/j.fuel.2019.116146 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000487820500056 |
关键词[WOS] | COUPLED MODEL ; SICHUAN BASIN ; PERMEABILITY ; STORAGE ; SIMULATION ; POROSITY ; MATRIX ; SAMPLE ; FLOW |
WOS研究方向 | Energy & Fuels ; Engineering |
WOS类目 | Energy & Fuels ; Engineering, Chemical |
资助项目 | National Natural Science Foundation of China[41690132] ; National Natural Science Foundation of China[41872163] ; National Natural Science Foundation of China[41574129] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010304] ; Major National Science and Technology Special Program of China[2017ZX05037-001] |
项目资助者 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major National Science and Technology Special Program of China |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Lin M |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/79772 |
专题 | 流固耦合系统力学重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Cao GH,Lin M,Ji L,et al. Characterization of pore structures and gas transport characteristics of Longmaxi shale[J]. Fuel,2019,258:10.1016/j.fuel.2019.116146. |
APA | Cao GH,Lin M,Ji L,Jiang WB,&Yang M.(2019).Characterization of pore structures and gas transport characteristics of Longmaxi shale.Fuel,258,10.1016/j.fuel.2019.116146. |
MLA | Cao GH,et al."Characterization of pore structures and gas transport characteristics of Longmaxi shale".Fuel 258(2019):10.1016/j.fuel.2019.116146. |
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