IMECH-IR  > 非线性力学国家重点实验室
Combining Image Recognition and Simulation To Reproduce the Adsorption/Desorption Behaviors of Shale Gas
Lin K(林岿)1,2; Huang XF(黄先富)1,2; Zhao YP(赵亚溥)1,2
Corresponding AuthorZhao, Ya-Pu(yzhao@imech.ac.cn)
Source PublicationENERGY & FUELS
2020
Volume34Issue:1Pages:258-269
ISSN0887-0624
AbstractShale gas stored in deep shale is in a supercritical state. Therefore, it is necessary to study the adsorption and desorption properties of supercritical shale gas. To accurately determine the state of methane (CH4) in the pores of deep shale, the fractal characteristics of several shale samples drilled at a depth of 2650 m are analyzed using scanning electron microscopy (SEM) and image analysis. We find nanopores with different fractal features in the shale. The effects of adsorption energy and substrate strain on adsorption capacity are clarified. The virial coefficients of CH4 are obtained by molecular dynamics (MD) simulations and are consistent with the experiment. The adsorption and desorption of CH4 in different fractal nanopores are modeled using grand canonical Monte Carlo (GCMC) simulations at different temperatures and pressures (from capillary condensation to supercritical state). Additionally, the gas-in-place (GIP), excess adsorption, and absolute adsorption isotherms are obtained. We find the crossover of excess adsorption isotherms, which was observed in the experiment, and the absolute adsorption amount increases with the increase in pressure in the case of ultrahigh pressure (>40 MPa). Moreover, we obtain an ultrahigh-pressure dual-site Langmuir equation, and it can accurately describe observed adsorption isotherms from low pressure to ultrahigh pressure. Our study visually reproduces the adsorption/desorption behaviors of CH4 under in situ conditions in deep shale and reveals their microscopic mechanism.
DOI10.1021/acs.energyfuels.9b03669
Indexed BySCI ; EI
Language英语
WOS IDWOS:000508470500023
WOS KeywordMOLECULAR-DYNAMICS SIMULATIONS ; NATURAL-GAS ; FRACTAL CHARACTERISTICS ; METHANE ADSORPTION ; PORE STRUCTURE ; SPONTANEOUS IMBIBITION ; COAL ; PRESSURE ; DISPLACEMENT ; DIFFUSION
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding ProjectNational Natural Science Foundation of China (NSFC)[11872363] ; National Natural Science Foundation of China (NSFC)[51861145314] ; National Natural Science Foundation of China (NSFC)[11702299] ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401] ; PetroChina Innovation Foundation
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program ; PetroChina Innovation Foundation
Classification二类
Ranking1
ContributorZhao, Ya-Pu
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81301
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
Lin K,Huang XF,Zhao YP. Combining Image Recognition and Simulation To Reproduce the Adsorption/Desorption Behaviors of Shale Gas[J]. ENERGY & FUELS,2020,34(1):258-269.
APA 林岿,黄先富,&赵亚溥.(2020).Combining Image Recognition and Simulation To Reproduce the Adsorption/Desorption Behaviors of Shale Gas.ENERGY & FUELS,34(1),258-269.
MLA 林岿,et al."Combining Image Recognition and Simulation To Reproduce the Adsorption/Desorption Behaviors of Shale Gas".ENERGY & FUELS 34.1(2020):258-269.
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