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dc.contributor.authorShi, Jihong
dc.contributor.authorGong, Liang
dc.contributor.authorSun, Shuyu
dc.contributor.authorHuang, Zhaoqin
dc.contributor.authorDing, Bin
dc.contributor.authorYao, Jun
dc.date.accessioned2019-09-11T13:10:37Z
dc.date.available2019-09-11T13:10:37Z
dc.date.issued2019
dc.identifier.citationShi, J., Gong, L., Sun, S., Huang, Z., Ding, B., & Yao, J. (2019). Competitive adsorption phenomenon in shale gas displacement processes. RSC Advances, 9(44), 25326–25335. doi:10.1039/c9ra04963k
dc.identifier.doi10.1039/c9ra04963k
dc.identifier.urihttp://hdl.handle.net/10754/656728
dc.description.abstractDisplacement of methane (CH4) by injection gas is regarded as an effective way to exploit shale gas and sequestrate carbon dioxide (CO2) simultaneously. To remarkably enhance the rupture and extension of fractures, an original and comprehensive simplification for the real shale composition model is established to study the shale gas displacement by gas injection. In the present model, besides the consideration in the existence of organic matter in shale, the choice of silica as inorganic minerals is firstly taken into account considering its brittleness characteristic to meet the demand of fracture stretch. Based on the model, the displacement methane process and competitive adsorption behaviors were studied by using the grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) respectively. As the results, the strong interaction between carbon dioxide and shale results in the higher efficiency of displacing methane. We also find that the optimum operating conditions for CO2 and N2 displacing methane are at the pore width of 30 Å, the result being slightly different from the previous studies indicating that the displacement efficiency of small pores is higher. Moreover, the displacement efficiency by using different gases can all reach higher than 50% when the injection pressure is greater than 30 MPa. It is expected that this work can reveal the mechanisms of competitive adsorption between shale gas and gases, and provide a guidance for displacement exploitation of shale gas by gas injection and sequestration of carbon dioxide.
dc.description.sponsorshipThe work was supported in part by the National Natural Science Foundation of China (51676208), the Fundamental Research Funds for the Central Universities (18CX07012A, 18CX05029A, 19CX05002A) and the grants BAS/1/1351-01, URF/1/2993-01, and REP/1/2879-01 from King Abdullah University of Science and Technology (KAUST)
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://xlink.rsc.org/?DOI=C9RA04963K
dc.rightsOpen Access Article. Published on 13 August 2019. Downloaded on 9/11/2019 2:08:34 PM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/
dc.titleCompetitive adsorption phenomenon in shale gas displacement processes
dc.typeArticle
dc.contributor.departmentComputational Transport Phenomena Lab
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalRSC Advances
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionCollege of New Energy, China University of Petroleum (East China) Qingdao 266580 China
dc.contributor.institutionSchool of Petroleum Engineering, China University of Petroleum (East China) Qingdao 266580 China
kaust.personSun, Shuyu
kaust.grant.numberBAS/1/1351-01
kaust.grant.numberREP/1/2879-01
kaust.grant.numberURF/1/2993-01
refterms.dateFOA2019-09-11T13:11:52Z


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Open Access Article. Published on 13 August 2019. Downloaded on 9/11/2019 2:08:34 PM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Except where otherwise noted, this item's license is described as Open Access Article. Published on 13 August 2019. Downloaded on 9/11/2019 2:08:34 PM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.