DOI:10.12358/j.issn.1001-5620.2023.04.017胍胶压裂液用高效杀菌剂研究及现场应用常青1,邹春凤2,蔡景超1,王越1,张秋红1,李风光1,杨超3(1.中国石油集团渤海钻探工程技术研究院,天津300280;2.中国石油集团渤海钻探井下技术服务分公司,天津300280;3.中国石油集团油田技术服务有限公司科技信息部,北京100007)常青,邹春凤,蔡景超,等.胍胶压裂液用高效杀菌剂研究及现场应用[J].钻井液与完井液,2023,40(4):535-539.CHANGQing,ZOUChunfeng,CAIJingchao,etal.Researchandapplicationofhigh-efficiencybactericideforguargumfracturingfluid[J].DrillingFluid&CompletionFluid,2023,40(4):535-539.摘要夏季压裂施工过程中存在胍胶压裂液受细菌等微生物滋生影响而腐化变质的问题,利用微生物多样性测序技术对大庆、内蒙和四川区域储液罐中胍胶压裂液的细菌菌种进行了分析,针对微生物类型研制了季铵盐复合聚赖氨酸类高效杀菌剂,通过平板计数法评价了其对胍胶压裂液的杀菌效果。室内实验结果表明:新研制的复合型杀菌剂可在2h内使得细菌的致死率达到100%。现场胍胶压裂液添加该杀菌剂后储存3d后体系的黏度保持率仍达90%。现场应用8口井共计352段,胍胶类压裂液体系使用该杀菌剂后未再出现腐败变质,证实了该新型杀菌剂具有高效杀菌效果。关键词菌种分析;扩增子测序;季铵盐;聚赖氨酸;复合杀菌剂中图分类号:TE357.12文献标识码:A文章编号:1001-5620(2023)04-0535-05ResearchandApplicationofHigh-efficiencyBactericideforGuarGumFracturingFluidCHANGQing1,ZOUChunfeng2,CAIJingchao1,WANGYue1,ZHANGQiuhong1,LIFengguang1,YANGChao3(1.EngineerTechnologyResearchInstitute,BHDC,Tianjin300280;2.DownholeTechnologyServiceCompany,BHDC,Tianjin300280;3.ScienceandTechnologyInformationDepartment,CPTEC,Beijing100007)AbstractInresponsetotheproblemofguargumfracturingfluidbeingaffectedbybacteriaandothermicroorganismsduringthesummerinDaqingarea,whichleadstodeterioration,andhydration,andaffectsthesuccessrateofconstruction,themicrobialdiversitysequencingtechnologywasusedtoanalyzethebacterialspeciesofguargumfracturingfluidinthreereservoirtanksconstructedatthesametimeindifferentblocks,andtheQuaternaryammoniumcationcompositepolylysinehigh-efficiencybactericidewasdeveloped.Thebactericid...