第43卷第3期(2024-03)油气田地面工程https://yqtd.cbpt.cnki.net集输处理壳聚糖季铵盐对O/W乳状液的破乳性能评价*颜廷俊1党新才2王晓和1提浩强1陈家庆3刘帅41北京化工大学特种流体中心2长庆油田分公司西安工业服务处3北京石油化工学院机械工程学院4海洋石油工程股份有限公司摘要:以壳聚糖季铵盐作为破乳剂,使用TurbiscanLab稳定性分析仪实验研究了破乳剂浓度及处理温度对水包油(O/W)型乳状液破乳效果的影响。实验结果表明:在25~55℃的处理温度范围内,破乳剂最佳使用浓度约0.4%(体积分数),破乳剂浓度超过1.0%后,无破乳效果。在操作温度为25℃、破乳剂加药浓度为0.4%时,所测得的背散射光ΔBS曲线显示出良好的油水分层现象,相应的TSI曲线值达到最大,油滴粒径增大7倍,破乳过程在10min之内基本完成。在25~55℃的处理温度范围内,破乳效果随温度升高而改善,最佳破乳温度为55℃。此研究对油田采出液破乳方法的选择具有指导借鉴意义。关键词:季铵盐破乳剂;加药浓度;温度;乳状液;ΔBS曲线;TSI曲线EvaluationofDemulsificationPerformanceofChitosanQuaternaryAmmoniumSaltonO/WEmulsion*YANTingjun1,DANGXincai2,WANGXiaohe1,TIHaoqiang1,CHENJiaqing3,LIUShuai41SpecialFluidCenter,BeijingUniversityofChemicalTechnology2Xi'anIndustrialServiceOffice,ChangqingOilfieldBranch3SchoolofMechanicalEngineering,BeijingInstituteofPetrochemicalTechnology4OffshoreOilEngineeringCo.,Ltd.Abstract:Usingchitosanquaternaryammoniumsaltasemulsionbreaker,theeffectofemulsionbreakerconcentrationandtreatmenttemperatureontheemulsionbreakingeffectofoil-in-water(O/W)typeemulsionisinvestigatedexperimentallyusingaTurbiscanLabstabilityanalyzer.Theexperi-mentalresultsshowthattheoptimumemulsionbreakerconcentrationisaround0.4%(volumefraction)inthetreatmenttemperaturerangeof25℃~55℃,andtheemulsionbreakingabilityisbasicallylostaf-tertheemulsionbreakerconcentrationexceeds1.0%.Attheoperatingtemperatureof25℃andemul-sionbreakerdosingconcentrationof0.4%,themeasuredbackscatteredlightΔBScurveshowsgoodoil-waterdelamination,thecorrespondingTSIcurvevaluereachesthemaximum,theoildropletparticlesizeincreases7times,andtheemulsionbreakingprocessisbasicallycompletedwithi...