化学工程师Sum335No.8ChemicalEngineerDOI:10.16247/j.cnki.23-1171/tq.20230860油田化学2023年第8期压差激活密封剂的制备与性能研究李凯凯,范振忠,刘庆旺,周明,臧鑫（东北石油大学石油工程学院，黑龙江大庆163318）摘要：本文通过对胶乳浓度、电解质加量、制备温度、终止剂加量、停搅时间等多种因素的考察，确定胶乳浓度为20%、电解质加量为10mL、制备温度为70℃、终止剂加量为6mL、停搅时间为5min。通过微观分析发现，在此条件下制备的丁基胶乳在NaC1的作用下能够形成分散性良好、形貌规则、粒径均匀的微球状胶凝颗粒，粒径集中分布在100~300μm;通过模拟封堵实验发现，制备的密封剂可在12MPa下对缝隙、油管丝扣等不同微泄漏处激活封堵，说明该密封剂具有良好的封堵性能；通过对密封剂的封堵行为同时分析了其自适应修复机理。关键词：压差激活密封剂；微观分析；封堵性能；自适应修复中图分类号：TE25；TQ31Studyonpreparationandpropertiesofdifferentialpressureactivatedsealant*LIKai-kai,FANZhen-zhong,LIUQing-wang,ZHOUMing,ZANGXin(SchoolofPetroleumEngineering,NortheastPetroleumUniversity,Daqing163318,China)Abstract:Inthispaper,manyfactorssuchaslatexconcentration,electrolyteaddition,preparationtemperature,terminatingagentadditionandstirringstoptimewereinvestigated,theconcentrationoflatexwasdeterminedtobe20%,theadditionofelectrolytetobe10mL,thepreparationtemperaturetobe70℃,theadditionofterminatortobe6mLandthestopstirringtimetobe5min.MicroscopicanalysisofbutyllatexpreparedundertheseconditionsshowedthatundertheactionofNaCl,butyllatexcouldformmicrosphericalgelparticleswithgooddispersion,regularmorphologyanduniformparticlesize,andtheparticlesizewasconcentratedintherangeof100~300μm.Throughthesimulationpluggingexperiment,itwasfoundthatthepreparedsealantcouldactivatethepluggingatdifferentmicro-leakageplacessuchasgapsandtubingwiresunder12MPa,indicatingthatthesealanthadgoodpluggingperformance.It'sadaptiverepairmechanismwasanalyzedbythepluggingbehaviorofthesealant,atthesametime.Keywords:differentialpressureactivatedsealant;microanalysisipluggingperformance;adaptiverepair在油气井生产过程中，由于地层环境复杂及设备使用年限增加，油气井密封组件...
