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DOI | 10.1016/j.petrol.2019.03.018 |
Adsorption-induced pore blocking and its mechanisms in nanoporous shale due to interactions with supercritical CO2 | |
Huang, Xianfu1,2; Zhao, Ya-Pu1,2; Wang, Xiaohe1,2; Pan, Lisheng3 | |
发表日期 | 2019 |
ISSN | 0920-4105 |
EISSN | 1873-4715 |
卷号 | 178页码:74-81 |
英文摘要 | Supercritical carbon dioxide (sCO(2)) has recently been used to recover hydrocarbons from shale formations due to its advantages in boosting production, saving water, and minimizing environmental impacts. Meanwhile, CO2 is sealed up underground, which would cut down the greenhouse gas emissions and reduce global warming. However, current knowledge regarding how sCO(2) interacts with shale, especially its nanopores which are responsible for adsorption, migration and storage of oil and gas, has been lacking. Here we show that after sCO(2) adsorption, the total pore volume decreases by similar to 20% in nanoporous shale, majorly by up to 60% in the range of 0.85-2.0 nm. We analyze the morphology and composition changes in shale, and show that the nanopore is either closed up or newly opened, with more closed pores than new ones. We for the first time propose that this adsorption-induced pore blocking phenomenon is jointly voluminal and geochemical resulted from physisorpfion, associative chemisorption and dissociative chemisorption of sCO(2) in shale. Our results help to effectively assess the hydrocarbon production capacity in shale gas reservoirs using CO2-fracking technique, and the CO2 storage potential in shale formations. |
WOS研究方向 | Energy & Fuels ; Engineering |
来源期刊 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/100226 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Xianfu,Zhao, Ya-Pu,Wang, Xiaohe,et al. Adsorption-induced pore blocking and its mechanisms in nanoporous shale due to interactions with supercritical CO2[J],2019,178:74-81. |
APA | Huang, Xianfu,Zhao, Ya-Pu,Wang, Xiaohe,&Pan, Lisheng.(2019).Adsorption-induced pore blocking and its mechanisms in nanoporous shale due to interactions with supercritical CO2.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,178,74-81. |
MLA | Huang, Xianfu,et al."Adsorption-induced pore blocking and its mechanisms in nanoporous shale due to interactions with supercritical CO2".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 178(2019):74-81. |
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