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1、新北油田气井选择性堵水技术研究与应用曲占庆雷锡岳叶卫保温鸿滨单蔚朱孝强王志中国石油大学(华东)石油工程学院山东石大油田技术服务股份有限公司中国石化胜利油田分公司海洋采油厂摘要:针对新北油田星东区块气井管柱积液严重、排液措施效果不理想、气井严重出水的问题对气井出水进行选择性封堵研究。针对气藏不同水侵类型选用冻胶堵边水、泡沫冻胶隔板堵底水,利用“选择性注入工艺+N2打通道技术”达到选择性堵水的目的。室内优选冻胶配方为0.4%聚合物+0.3%交联剂,评价岩心封堵率大于97%;实验室通过“气驱(测渗透率)
2、-冻胶(注入冻胶封堵)-气驱(测渗透率)”方法评价氮气疏通气体渗流通道效果,疏通后冻胶对气相封堵率小于30%,岩心的渗透率逐渐恢复。在新北油田KD481B-9井进行矿场试验,验证了气井选择性堵水技术的可行性。关键词:气井;选择性封堵;性能评价;气体疏通;新北油田;作者简介:曲占庆(1963-),男,教授,博士,研究方向:釆油工程。E-mai1:quzhq@upc.edu.cn收稿日期:2017-05-25基金:国家自然科学基金青年项目(51404288)ResearchandApplication
3、ofSelectiveWaterPluggingTechnologyforGasWellsinXinbeiOilfieldQUZhanqingLEIXiyueYEWeibaoWENHongbinSHANWeiZHUXiaoqiangWANGZhiweiFacultyofPetroleumEngineering,ChinaUniversityofPetroleum(EqstChina);ShandongShidaOilfieldTechnicalServiceLimitedCompany;Haiya
4、ng0订ProductionPlant,Shengli0订fieldCompanyofSINOPEC;Abstract:InKendongblockofXinbeiOilfield,therewasseriousliquidaccumulationphenomenoningaswells,andtheeffectofdrainagemeasuresisnotideal.Sothegaswellswouldproducealotofwater.Forthisreason,theselectivepl
5、uggingtechnologywasstudiedforthegaswells.Accordingtodifferenttypesofwaterinvasioningasreservoir,plugedgewaterusinggelandplugbottomwaterusingfoamgel,and"theselectiveinjectionprocess+N2dredginggaschanneltechnology"wasadoptedtoachievethepurposeofselectiv
6、ewaterplugging.Thegelformulaoptimizedinlaboratoryis"0.4%polymer+0.3%crosslinker",andthepluggingratiooftheevaluationcoresismorethan97%.TheeffectofN2dredginggaschanneltechnologywasevaluatedinlaboratorybygasflooding(measuringpermeability)-gelinjecting-ga
7、sflooding(measuringpermeability),anditisshownthatafterN2dredging,thepluggingratioofgeltogasislessthan30%,andthepermeabilityofcoreisrecoveredgradually.ThefeasibilityoftheselectivewaterpluggingtcchnologyforthegaswellswasverifiedbythefieldtestofwellKD481
8、B~9inXinbeiOilfield.Keyword:gaswel1;selectivewaterplugging;performsneeevalustion;gasdredging;Xinbei0订field;Received:2017-05-25曲占庆,雷锡岳,叶卫保,等•新北油田气井选择性堵水技术研究与应用[J]•西安石油大学学报(自然科学版),2017,32(6):56-60.QUZhanqing,LEIXiyue,YEWeibao,etal.Researchandapp