·1156·第53卷第10期2023年10月Vol.53No.10Oct.2023日用化学工业（中英文）ChinaSurfactantDetergent&CosmeticsReceived:October1,2022;Revised:September25,2023.*Correspondingauthor.E-mail:ccww91@126.com.中海油田服务股份有限公司天津分公司资助项目（G2217B-0620T135，G1915B-0620T208）；中国石油天然气集团有限公司“十四五”科技项目“绿色油气田污染防治及生态保护研究”子课题（2021DJ6606）DOI：10.3969/j.issn.2097-2806.2023.10.006StudyontheinfluencemechanismsofpolymersandsolidparticlesonthestabilityofcrudeoilemulsionChaoYang1,2,ZhimingTong3,ZhanshengWang4,WuChen1,2,*（1.SchoolofChemicalandEnvironmentalEngineering,YangtzeUniversity,Jingzhou,Hubei434023,China;2.KeyHSELaboratoryofPetroChina（YangtzeUniversity）,Jingzhou,Hubei434023,China;3.OilfieldChemicalDivisionofChinaNationalOffshoreOilfieldServicesCorporation,Tianjin300450,China;4.SafetyandEnvironmentalProtectionTechnologyResearchInstituteofCNPC,Beijing102206,China）Abstract:Toclarifythereasonswhythebackflowresidueofoilfieldoperationaffectsthedehydrationofproducedcrudeoil,themechanismsforsinglepolymers,singlesolidparticlesandthecoexistenceofapolymerandparticlesaffectingthestabilityofcrudeoilemulsionwerestudied,inwhichNPAMandguargum,whicharethemostcommonbackflowresidues,weretakenastherepresentativesofpolymers,andquartzsandastherepresentativeofsolidparticles.Theresultsshowedthatsinglepolymerscouldinfluencethestabilityoftheemulsion.Whenthemassconcentrationofthepolymerwasincreasedto1000mg/L,thedehydrationrateoftheemulsionwasdecreasedto0%,andthepeakofparticlesizedistributionwaslessthan10μm.Theviscositywassignificantlyincreased,i.e.,theviscosityoftheemulsioncontainingguargumwasincreasedto3.80times,andtheviscosityoftheemulsioncontainingNPAMwasincreasedto2.82times.Theequilibriuminterfacialtensionwasdecreased,theviscoelasticityoftheoil-waterinterfacewasincreased,andtheelasticmoduluswas4-5timesthatoftheviscousmodulus.Inthiscase,theboundaryfilmwasmainlyelastic,thestrengthoftheboundaryfilmwasincreased,andthusthestabilityoftheemulsionwasinc...
