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时间:2020-03-28
《小直径管内水力切割器的研制与应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷第6期石油钻采工艺Vo1.34No.62012年11月OILDRILLING&PR0DUCT10NTECHN0L0GYNOV.20l2文章编号:1000—7393(2012)06一叭12—03小直径管内水力切割器的研制与应用杜丙国,马清明(1.中国石油大学石油工程学院,山东青岛2665802.中国石化胜利油田分公司,山东东营257001)引用格式:杜丙国,马清明.小直径管内水力切割器的研制与应用[J].石油钻采工艺,2012,34(6):112一l13,l16.摘要:为解决聚能和化学切割井下复杂遇卡管柱高破坏性、高危险性的难题,研制了小直径管内水力切割装置。该装置
2、通过地面泵车打压使井下液压马达带动切割工具旋转,3'-工作液通过底部喷嘴时,喷嘴节流作用形成工作压差,使活塞向上运行压缩弹簧并与刀片根部相接触,锥体逐步推动刀片伸出并完全张开到切割位置,高速旋转的刀片从内部铣削油管直至将卡点以上油管割断。该装置应用不受井斜限制,配备液压驱动扶正器、水力机械锚,可在直井、斜井、水平井任意井深位置切割遇卡管柱。目前在胜利油田应用4井次,切割成功率100%。现场应用表明该装置操作简单方便,切割遇卡油管端面规则,并且工作效率高,可靠性强,在油水井作业管柱卡钻处理方面具有广阔的应用前景。关键词:水力切割;管内切割;修井卡钻;解卡工艺中图分类号:TE
3、358文献标识码:BDevelopmentandapplicationofasmall-diameterinsidetubehydrauliccutterDUBingguo1'2,MAQingming2(1.SchoolD厂PetroleumEngineering,ChinaUniversityofPetroleum,Qingdao266580,China;2.SinopecShengliOilfieldCompany,Dongying257001,China)Abstract:Inordertosolvetheproblemthatcumulativeandchemic
4、alcuttingofstuckdownholestringbringshighriskofdestruc—tiveness,thesmal1.diameterinsidetubehydrauliccurerhasbeendeveloped.Thedeviceworksinsuchaprinciplewheredownholehy—draulicmotor,afterbeingpressurizedbygroundpumperdrivesthecuttingtooltorotate;whenthefluidrunsthroughtheboaomnozzle,itsthro
5、ttlingactionproducesdiferentialpressure,whichdrivesthepistontomoveupward,compressspringandtouchthebladeroot,whiletheconepushesthebladeextendedandfullyopenedatthecuttingposition,beforethehigh·speedrotatingblademillstheoiltubefrominsideuntilcuttingoftheoiltubeabovethestuck—point.Thedevice,w
6、hichcanbealsoappliedindeviatedwells,afterequippedwithahydrauliccentralizerandhydro—mechanicalanchor,canbeusedtocutastuckstringatanywelldepthpositioninvertical,deviatedandhorizontalwells.Uptonow,ithasbeenappliedinfourwellsinShenglioilfieldandthesuccessfulrateofcuttingwas100%.Fieldapplicati
7、onsshowthatthedeviceiseasyandconvenienttooperate,anditcaneficientlyandreliablycutthestuckoiltubeleavingregularendface,SOthisdevicehasawideapplicationprospectinaspectofdealingwiththestuckstringinoil—waterwelloperation.Keywords:hydrauliccutting;insidetubecutting;worko
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