STUDY ON THE ADSORPTION PHENOMENON吸附现象的研究 在页岩中结合 分子动力学模拟 分形分析

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1、March23,201815:10218-348X1840004Fractals,Vol.26,No.2(2018)1840004(15pages)
cTheAuthor(s)DOI:10.1142/S0218348X18400042STUDYONTHEADSORPTIONPHENOMENONINSHALEWITHTHECOMBINATIONOFMOLECULARDYNAMICSIMULATIONANDFRACTALANALYSISLIEHUIZHANG,∗,¶,∗∗JIANCHAOLI,∗DUJIA,†YULONGZHAO,∗,,∗∗CHUNYUXIE‡andZ

2、HENGWUTAO§∗StateKeyLaboratoryofOilandGasReservoirGeologyandExploitationSouthwestPetroleumUniversityChengdu,Sichuan610500,P.R.China†ResearchCenterofChinaUnitedCoalbedMethaneCorporation,Ltd.Beijing100011,P.R.China‡EnvironmentalSafetyandTechnicalSupervisionInstituteSouthwestOil&GasFieldCo

3、mpany,PetroChinaChengdu,Sichuan610041,P.R.China§ResearchInstituteofExplorationandDevelopmentTarimOilfieldCompany,PetroChina,KorlaXinjiang841000,P.R.ChinaFractals2018.26.Downloadedfromwww.worldscientific.com¶zhangliehui@vip.163.com373104686@qq.comReceivedDecember21,2017AcceptedJanuary13

4、,2018PublishedMarch1,2018by117.165.40.65on07/23/18.Re-useanddistributionisstrictlynotpermitted,exceptforOpenAccessarticles.AbstractAsoneofthekeystatusofgasinshalereservoir,adsorptiongasaccountsforconsiderableper-centageoftotalgasamount.Duetothecomplexityandnanostructureofshalegasreserv

5、oir,itisverychallengingtorepresentadsorptiongasthroughtraditionalmethods.However,theintegrationofthefractaltheoryandmoleculardynamics(MD)simulationmayprovideanewperspectiveofunderstandingsuchnanostructureandthemicro-phenomenonhappeninginit.∗∗Correspondingauthors.ThisisanOpenAccessartic

6、lepublishedbyWorldScientificPublishingCompany.ItisdistributedunderthetermsoftheCreativeCommonsAttribution4.0(CC-BY)License.Furtherdistributionofthisworkispermitted,providedtheoriginalworkisproperlycited.1840004-1March23,201815:10218-348X1840004L.Zhangetal.Thekeypurposeofthispaperistoinv

7、estigatetheadsorptionphenomenoninshalekerogen.ByusingMDsimulationandgrandcanonicalMonteCarlo(GCMC)algorithm,theadsorptionofmethanein2,5and10nmslit-likeporesissimulatedfordifferenttemperatureandpressurestatus.Accordingtotheresults,theaveragegasdensityinsmallerporesishigherthanthatinbig