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1、CoiledTubing:InnovativeRiglessInterventionsReentrydrilling,reservoirstimulationandwellborerecompletionsoftenneedtobeperformedwithoutrotaryrigsorconventionalworkoverunitsasameansofmaximizingproductioneconomics.Coiledtubingallowsremedialoperationstobeperf
2、ormedunderpressure,or“live”conditions,withoutpullingwelltubulars.Collaborationbetweenoperatorsandprovidersofthistechnologycontinuestoyieldtoolsandtechniquesthatimproveproductivityinbothnewandmaturefields.AbderrahmaneBoumaliManyoperatingcompaniesareturnin
3、gtoslickline,coiledtubingprovidesrelativelyhighSonatrachthrough-tubing,orconcentric,operationstoloadcapacitiesfordeeperverticalorextendedAlgiers,Algeriasolvedifficultproductionproblemsandtomeethigh-anglereach,andforgreatertensiledemandingwell-interventio
4、norwellbore-capacity,oroverpull,downhole.MarkE.Bradyrecompletionchallenges.SteeplydecliningThesecapabilitiesfacilitatewellboreDoha,Qatarproductionoutputandinsufficientreplacementcleanouts;jettingorliftingwellswithinertofoilandgasreserveshavecompelledoper
5、atorsgasesorlighterfluids;perforationwashes;acidErikFerdiansyahtoreexaminefield-developmentstrategiesandandhydraulicfracturingstimulations,sand-SanthanaKumarStanvanGisbergenreservoir-managementefforts.Increasingly,assetconsolidationorsand-controltreatment
6、s;PetroleumDevelopmentOmanmanagersneedtooptimizetheperformanceofcementing;fishingormilling;andbothdirec-Muscat,Omanbothnewandexistingwellstomeetglobaltionalandunderbalanceddrilling.Installingdemandforpetroleum.wireline,dataorpowercablesinsideastringofTom
7、KavanaghLongstringsofrelativelysmall-diametersteelcoiledtubingallowsreal-timewelllogging,Sharjah,UnitedArabEmiratespipe,orcoiledtubing,canbemobilizedquicklytodownholemonitoringandcontrol,measurementsdrillnewwellsorreenterwellsthroughexistingwhiledrillin
8、gandoperationofelectricalAvelZ.Ortiz1wellboretubulars.Thistechnologyalsoisusedtosubmersiblepumps.SugarLand,Texas,USAperforminitialcompletions,remedialinterven-Usingapplication-specificdownholesystems,tionsandworkovers,orrecompleti
