YJLP-112预节流防刺配水器的研制与应用.pdf

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1、石油机械2014年第42卷第6期CHINAPETR0LEUMMACHIER油气田开发工程YJLP一112预节流防刺配水器的研制与应用张一羽王宏万韩封辛林涛张卫卫(1．胜利油田分公司采油工艺研究院2．胜利油田分公司河口采油厂)摘要：针对层间吸水差异较大的分注井中高渗层注水存在节流压差不够、调配不准及配水器剌坏等问题，研制了预节流防剌配水器。该配水器设计了3级节流方式，具有节流压差调节范围大、可防返吐等特点；同时采用组合活塞结构增强配水器的防刺效果，延长了大压差分注井中配水器的调配周期和有效使用寿命。该配水器已现场应用8井次，一次性施工成功率100％

2、。应用结果表明，该预节流防刺配水器原理可靠、结构合理，在对高渗层实现大压差控制的同时，还增强了配水器防刺注水效果，大压差分注井的层段合格率由原来的50．0％提升至87．5％。关键词：配水器；大压差；分注井；节流；防刺；调配中图分类号：TE934文献标识码：Adoi：10．3969／j．issn．1001—4578．2014．06．014DevelopmentandApplicationofYJLP一112Pre·chokeAnti—erosionWaterRegulatorZhangYiyuWangHongwanHanFengXinLintaoZ

3、hangWeiwei(1．ResearchInstituteofProductionTechnology，ShengliOilfieldCompany，SINOPEC2．HekouOilProductionPlant，ShengliOilfieldCompany，SINOPEC)Abstract：Inseparatewaterinjectionwellwithlargewaterabsorptiondifferencebetweendifferentlayers，wa—terinjectioninhighpermeablelayerencount

4、ersmanyproblemsincludinglowchokedifferentialpressure，inaccura—cyallocationandwaterregulatorerosion．Toaddresstheseproblems，apre-chokeanti—erosionwaterregulatorisde—veloped．Thenewdesignedwaterregulatorhasthreestagechokemethodswiththefeaturesoflargeadjustmentrangeofchokedifferen

5、tialpressureandback—flowprevention．Byadoptingacompositepistonstructure，theanti-erosioncapabilityofwaterregulatorisimproved，extendingtheeffectiveregulationlifecycleofwaterregulatorinseparatewaterinjectionwellwithlargedifferentialpressure．Thewaterregulatorhasbeenappliedin8wells

6、andallopera．tionswereaccomplishedoncewith100％SHCCeSSrate．Theapplicationresultsdemonstratethatthepre—chokeanti-erosionwaterregulatorhasreliableprincipleandrationalstmeture．Whileachievinglargedifferentialpressurecon—trolinhighpermeabilitylayer，thewaterregulator’Santi—erosioncap

7、abilityisenhanced，andtheintervalqualifica—tionrateisincreasedfrom50．0％to87．5％inseparatewaterinjectionwellwithlargedifferentialpressure．Keywords：waterregulator；largedifferentialpressure；separatewaterinjectionwell；choke；anti—erosion；allocation层问干扰日益加剧。层间注水压差较大、采用0—口常规配水工艺无法进行调配

8、的注水井(以下称为大压差井)逐年增多。目前，在同一注水压力系随着老油田开发程度的不断深入，分层注水井统下的大压差分注井中，高渗层控制注水