微米级交联聚丙烯酰胺微球分散体系的封堵特性.pdf

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1、石油化工2014年第43卷第1期PETROCHEMICALTECHN0L0GY·91·微米级交联聚丙烯酰胺微球分散体系的封堵特性林梅钦，郭金茹，徐凤强，林云，陈美华。(1．中国石油大学提高采收率研究院，北京102249；2．中国石油三次采油重点实验室，北京102249；3．中国石油大港油田采油工艺研究院，天津300280)[摘要]采用SEM、激光衍射分析及核孔膜过滤实验，研究了微米级交联聚丙烯酰胺(CPAM)微球分散体系的封堵性能。实验结果表明，CPAM微球分散体系比部分水解聚丙烯酰胺(HPAM)溶液更容易在核孔膜中形成吸附滞留，CPAM微球分散体系对1．2m核孑L膜的封堵程度远大

2、于HPAM溶液。在一定的盐浓度范围内，盐浓度对CPAM微球分散体系的封堵性能影响较小；随溶胀温度的升高，CPAM微球分散体系通过核孔膜的过滤速率变化不大；CPAM微球分散体系具有很好的耐温抗盐稳定性。随CPAM微球浓度的增大，CPAM微球分散体系通过核孔膜的过滤时间显著延长，其封堵性能增强。溶胀时间对CPAM微球分散体系的封堵性能有较大影响，随溶胀时间的延长，CPAM微球分散体系的封堵能力先逐渐增强，在溶胀15d左右时达到最大，然后逐渐减弱。[关键词]微米级交联聚丙烯酰胺微球；核孔膜；封堵特性；溶胀；粒径[文章编号]1000—8144(2014)O1—0091—06[中图分类号]T

3、Q326．4[文献标志码]APluggingPropertyofMicroCrosslinkedPolyacrylamideMicrosphereDispersedSystemLinMeiqin一，GuoJinru一，XuFengqiang一，LinYun。ChenMeihua，(1．EnhancedOilRecoveryResearchInstitute，ChinaUnive~ityofPetroleum，Beijing102249，China；2．KeyLaboratoryofEnhancedOilRecovery，CNPC，Beijing102249，China；3．OilP

4、roductionTechnologyInstituteofDagangOilfield，CNPC，Tianjin300280，China)[Abstract]Thepluggingpropertyofmicrocrosslinkedpolyacrylamide(CPAM)microspheredispersedsystemwasinvestigatedbymeansofSEM，laserdiffractionparticlesizeanalyzerandnuclearporemembranefiltrationexperiments．Theresultsshowedthatthe

5、adsorptionanddetainmentofCPAMmicrospheredispersedsystemonthenuclearporemembranewereeasierthanthoseofhydrolyzedpolyacrylamide(HPAM)solution．ThepluggingdegreeoftheCPAMmicrospheredispersedsystemtothe1．2pmnuclearporemembranewasmuchhigherthanthatoftheHPAMsolution．ThepluggingcharacteristicoftheCPAMm

6、icrospheredispersedsystemwasslightlyaffectedbysaltconcentrationinacertainrange．ThefilteringrateoftheCPAMmicrospheredispersedsystempassingthroughthemembranekeptalmostunchangedalongwithtemperaturerise．TheCPAMmicrospheredispersedsystemhasgoodtemperatureresistanceandsalttolerance．Meanwhile，thefilt

7、rationtimeoftheCPAMmicrospheredispersedsystempassingthroughthemembraneincreasedlargelywithincreasingtheCPAMmicrosphereconcentration，SOitspluggingeffectwasenhanced．Thepluggingcapacityincreasedwithswellingtimeatfirst，reachedthemaximumafte