NMY341—114型封隔器的研制与试验.pdf

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1、石油机械2012年第40卷第10期CHINAPETROLEUMMACHINERY油气田开发工程NMY341—114型封隔器的研制与试验陈春江张寿根刘庆辉。黎国成刘苏锋(1．中原油田内蒙采油事业部2．q-原油田采油三厂3．中原油田建筑集团4．中原油田供水管理处)摘要：油田开发中后期，油水井井筒状况恶化，油井堵水和水井分注需要可靠性更高、寿命更长的封隔器，为此，研制了NMY341—114型封隔器。该封隔器采用最简化设计，只有15个刚体零件，结构简化也提高了可靠性，坐封动作简单合理；将胶筒压缩后的坐封回弹距离降低到最低程度，特别是解锁环设计使得封隔器解封动作可

2、靠，且具备二次坐封能力；平衡活塞的过平衡设计有效消减了管柱蠕动带来的解封风险，偏高的坐封力提高了恶劣井况下胶筒的密封能力，同时肩部保护器延长了胶筒在大坐封力下的密封寿命。室内和现场试验结果表明，NMY341—114型封隔器具有性价比高，抗管柱蠕动能力强，密封有效期长，适用范围广等特点。关键词：封隔器；性价比；解锁环；二次坐封；管柱蠕动中图分类号：TE931文献标识码：A文章编号：1001—4578(2012)10—0103—04ResearchandTestofModelNMY341—114PackerChenChunjiangZhangShougenL

3、iuQinghuiLiGuochengLiuSuing(1．InnerMongoliaOilProductionDepartment，ZhongyuanOilfield2．No．3OilProductionPlant，ZhongyuanOi~eld3．ConstructionGroup，ZhongyuanOilfield4．OfficeofWaterSupply，ZhongyuanOilfield)Abstract：Theboreholesofoilandwaterwellsbecomeworseinthemiddleandlaterdevelopmen

4、tstage．Thewaterplugginginoilwellsandseparateinjectioninwaterwellsrequiremorereliablepackerswithalongerservicelife．Therefore，ModelNMY341—114packerwasdeveloped．Thepackeradoptsthesimplestdesign，withonly15rigidparts．Thestructuralsimplificationalsoimprovesthereliability．Thesettingmove

5、mentissimpleandreasonable．Thedistanceofsettingandspringbackafterpackerrubbercompressionisre—ducedtoaminimum．Inparticular，thedesignoftheunlockingringmakestheunsettingmovementofthepackerreliable，withtheca—paeityofasecondsetting．Theoverbalancedesignwhichbalancesthepistoneffectivelyr

6、educestheunsettingriskcausedbystringcreeping．Theslightlyhighersettingforceimprovesthesealabilityofpackerrubberinseverewellconditions．Meanwhile，theshoulderprotectorlengthenstheservicelifeoftherubberinlargesettingforce．Thelaboratoryandfieldtestsshowthatthepackerischaracterizedbyhig

7、hperformance—priceratio，strongcapacitytoresiststringcreeping，longperiodofvalidityofsealingandextensiveapplication．Keywords：packer；performance—priceratio；unlockingring；secondsetting；stringcreeping构进行改良、整合和创新，研制出了可靠性更高、0引言成本更低的NMY341—114型封隔器。随着白音查干达尔其油田开发进入中后期，油1技术分析水井井简状况逐步恶化，分层管柱

8、有效期缩短，这就需要可靠性更高、寿命更长的封隔器；另一方面1．1结构出于经济性考