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1、摘要为解决高含水油田产出液的高效破乳问题,论文进行了改性聚醯破乳剂的研究。论文首先以内二醇类聚瞇破乳剂2072和烯丙基氯为原料,采用先醯化后聚合的方法合成了改性2072破乳剂,分别探讨了瞇化和聚合的条件。在此基础上对丙三醇聚瞇类破乳剂2031、丙三醇聚瞇类破乳剂与碳酸二甲酯交联后的产物2131与烯丙基氯进行反应,采用瞇化■聚合一步法合成了改性2031破乳剂和改性2131破乳剂。通过瓶试法筛选出性能较好的六个产品,分别考察了破乳温度、破乳剂加量、破乳时间对破乳效果的影响,评价表明,改性2072破乳剂、改性2031破乳剂与改
2、性2131破乳剂对永一站原油及辛三站原油均表现岀优良的破乳性能,其中2031的改性产品,在55°C,加量为1.4mL的实验条件下,对永一站原油乳状液的脱水率由75%提高到92%;在70°C,加量为1.4mL的实验条件下,对辛三站原油乳状液的脱水率可达82%,而单纯的2031仅为67%;另夕卜,2072的改性产品,在55°C,加量为1.4mL的实验条件下,对永一站原油乳状液的脱水率由79%提高到92%;在70°C,加量为1.4mL的实验条件下,对辛三站原油乳状液的脱水率可达80%,而单纯的2072仅为62%;2131的改性
3、产品,在55°C,加量为1.4mL的实验条件下,对永一站原油乳状液的脱水率曲73%提高到92%;在70°C,加量为1.6mL的实验条件下,对辛三站原油乳状液的脱水率可达58%,而单纯的2031为50%。该结果表明,采用适当条件对常规破乳剂改性,可以明显提高其破乳性能。关键词:聚醯,破乳剂,改性,脱水率,破乳性能AbstractInordertodemulsifytheproductionfluideffectively,polyetherdemulsifierwasmodifiedtosynthetiseanewkind
4、ofdemulsifie匚Inthispaper,allylchlorideand2072,akindofpolyetherdemulsifier,asselectedtosynthetisepropyleneglycolpolyethermodifieddemulsifier.Thereactionincludedtwosteps:etherificationandpolymerization,andthereactionconditionswereprobed.Basedonthesestudies,anothert
5、womodifieddemulsifiers,namedbyglycerinpolyetherdemulsifier2031demusifiersandglycerinpolyetheranddimethylcarbonatecrosslinking^products2131demusifiers,weresynthetisedbyonepotreactionofallylchlorideand2031,allylchlorideand2131,respectively.Weselectsixpreferabledemu
6、lsifiersbythebottletestingmethodwiththeoilofyongstationandxin-3station.Theeffectsofdemulsificationtemperature,demulsifierdosage,demulsificationtimeonthedemulsificationperformancearestudied.Theevaluationindicatedthatsuchdemulsifiershowedexcellentperformanceofdemul
7、sificationforoilsfromyong-1stationandxin-3stationinshenglioilfield.Foroilfromyong-1,thefinaldehydrationrateofmodified2031demulsifierwasupto92%withinmassconcentrationofL4mLat55°C,whilefor2031,therawmaterial,itwasonly75%atthesameconditions,usedforoilofxin-3,thefina
8、ldehydrationrateofmodified2031demulsifierwasupto82%withinmassconcentrationof1.4mLat70°C,whileitwasonly67%with2031;Foroilfromyong-1?thefinaldehydrationrateofmod