www.oil-it.com The R equ irement: Injectingseawaterintoreservoirsormaintenanceoreservoir pressureandincreasedoilrecovery(IOR)isalongestablished andcommonpractice.Treatmentothewaterbeoreinjectionis howeveressentialtoavoidpluggingandsouringothereservoir. Thetreatedseawaterisinjectedintothemaineldreservoir throughplatorm-basedinjectionwells,orcanbetransported outtosubseainjectionwellsthroughlongfowlines.Whilethis approachhasservedtheindustryormanyyears,itdoesimpose somechallenges,mainlyimplicationsassociatedwithbeingable toeectivelydrainaeld. AsanalternativesolutiontoenhanceIORandmaximise production,SWIThasbeenunderdevelopmentandtestingsince 2003.Sincethenithasbeenawardedourpatentsandwonan innovationawardatONSin2006. Aspartoitscontinueddevelopment,ullscalesubseapilotplant trialswererequiredandITFworkedincollaborationwithWell Processingtosecureindustryundingromseveralinternational oilcompaniesoreldtrialling.Thisalsobroughtaboutthe opportunitytosecureurtherundsromDEMO2000andmarked thersttimethatthetwobodieshaveworkedinconjunctionto securesupportoraJointIndustryProject(JIP). The Solution: The18monthlongSWITJIPwaslaunchedinDecember 2008withsupportromourmajoroilandgasoperatorsand DEMO2000.Thetechnologyallowsorsigniicantreduction insolidscontent,providestwoindependentmethodsor‘on line’sterilisationoseawater–electro-chlorinationandanew methodorsterilisationviahydroxylradicalgeneration-and alsoincludessystemsterilisation. The Method: WellProcessingdevelopedtheSWITtechnologytoallowreservoir engineersthereedomtothinkoutsidethebox.Becauseatopsides watertreatmentandinjectionplantisreliantonthedatagathered rominitia lappraisalw ellinorma tion,itmaybeina dequate orthe eldsneedsoveritsentirelietime. SWITgivesreedomochoicewithrespecttothenumberand locationoinjectionwells–itallowsorinjectionoasmuchtreated seawaterasrequired,whererequired–withouttypicalhostplatorm restrictions.This technologyessentiallyallowsth edecisiononwater injectionneedstobedelayeduntilthereservoirisupandrunning becauseoperatorscanseehowareservoirreactsthenprovide waterinjectionasrequiredratherthanhavingtoestimateuture requirementsanddesignthemintotheplatormattheoutset. Implementation: TherstphaseotheSWITproject,engineeringdesignand abrication,isnownearingcompletionandthepilotplantisduetobe transportedtoNIVA ’smarineresea rchcentreinOslojor dorsubsea testing.Onceproven,thesubseawatertreatmentsystemwillbe combinedwithexistingsubseawaterinjectionpumpingequipment. The Outcomes: SWITexpandsthechoicesavailabletooperatorsandallowsor injectionoasmuchtreatedseawaterasrequired,whererequired –withouttherestictionsandlimitationsassociatedwithusinga hostplatorm.Thetechnologyisbeingcontinuallydevelopedand otherapplicationsorSWITincludeboostingpressureinolder reservoirsandthedevelopmentosatelliteeldsthatwould otherwisebeuneconomical. Well Processing’s innovative subsea water injection treatment (SWIT) system is undergoing full-scale pilot plant trials thanks to support from ITF and Norway’s DEMO 2000 initiative. SWIT provides an alternative to topsides seawater treatment by doing everything on the seabed. The system offers a subsea seawater treatment solution to add to existing subsea pumping and christmas tree technology . – Hydrogen Venting Subsea Control Unit Hydroxyl Radical Generator Electrochlorinator ‘Still’ Room Subsea water injection treatment (SWIT) Case Study: TheIndustry Technology Facilitator TheEnterprise CentreExploration DriveBridge oDonAberde enAB238GX+44(0) 1224853400ino@oil-it.com
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8/6/2019 Subsea Water Injection Treatment
http://slidepdf.com/reader/full/subsea-water-injection-treatment 1/1
www.oil-it.com
TheRequirement:Injectingseawaterintoreservoirsormaintenanceoreservoirpressureandincreasedoilrecovery(IOR)isalongestablishedandcommonpractice.Treatmentothewaterbeoreinjectionishoweveressentialtoavoidpluggingandsouringothereservoir.Thetreatedseawaterisinjectedintothemaineldreservoirthroughplatorm-basedinjectionwells,orcanbetransported
outtosubseainjectionwellsthroughlongfowlines.Whilethisapproachhasservedtheindustryormanyyears,itdoesimposesomechallenges,mainlyimplicationsassociatedwithbeingabletoeectivelydrainaeld.
AsanalternativesolutiontoenhanceIORandmaximiseproduction,SWIThasbeenunderdevelopmentandtestingsince2003.SincethenithasbeenawardedourpatentsandwonaninnovationawardatONSin2006.
Aspartoitscontinueddevelopment,ullscalesubseapilotplanttrialswererequiredandITFworkedincollaborationwithWellProcessingtosecureindustryundingromseveralinternationaloilcompaniesoreldtrialling.ThisalsobroughtabouttheopportunitytosecureurtherundsromDEMO2000andmarked
thersttimethatthetwobodieshaveworkedinconjunctiontosecuresupportoraJointIndustryProject(JIP).
TheSolution:The18monthlongSWITJIPwaslaunchedinDecember2008withsupportromourmajoroilandgasoperatorsandDEMO2000.Thetechnologyallowsorsigniicantreductioninsolidscontent,providestwoindependentmethodsor‘online’sterilisationoseawater–electro-chlorinationandanewmethodorsterilisationviahydroxylradicalgeneration-andalsoincludessystemsterilisation.
TheMethod:WellProcessingdevelopedtheSWITtechnologytoallowreservoirengineersthereedomtothinkoutsidethebox.Becauseatopsideswatertreatmentandinjectionplantisreliantonthedatagatheredrominitialappraisalwellinormation,itmaybeinadequateortheeldsneedsoveritsentirelietime.
SWITgivesreedomochoicewithrespecttothenumberandlocationoinjectionwells–itallowsorinjectionoasmuchtreatedseawaterasrequired,whererequired–withouttypicalhostplatormrestrictions.Thistechnologyessentiallyallowsthedecisiononwaterinjectionneedstobedelayeduntilthereservoirisupandrunningbecauseoperatorscanseehowareservoirreactsthenprovidewaterinjectionasrequiredratherthanhavingtoestimateuturerequirementsanddesignthemintotheplatormattheoutset.
Implementation:TherstphaseotheSWITproject,engineeringdesignandabrication,isnownearingcompletionandthepilotplantisduetobetransportedtoNIVA’smarineresearchcentreinOslojordorsubsea
testing.Onceproven,thesubseawatertreatmentsystemwillbecombinedwithexistingsubseawaterinjectionpumpingequipment.
TheOutcomes:SWITexpandsthechoicesavailabletooperatorsandallowsorinjectionoasmuchtreatedseawaterasrequired,whererequired–withouttherestictionsandlimitationsassociatedwithusingahostplatorm.ThetechnologyisbeingcontinuallydevelopedandotherapplicationsorSWITincludeboostingpressureinolderreservoirsandthedevelopmentosatelliteeldsthatwouldotherwisebeuneconomical.
Well Processing’s innovative subsea water injectiontreatment (SWIT) system is undergoing full-scalepilot plant trials thanks to support from ITF andNorway’s DEMO 2000 initiative. SWIT provides analternative to topsides seawater treatment by doingeverything on the seabed. The system offers a subsea
seawater treatment solution to add to existingsubsea pumping and christmas tree technology.
–
Hydrogen VentingSubseaControl Unit
Hydroxyl RadicalGenerator
Electrochlorinator
‘Still’ Room
Subsea water injectiontreatment (SWIT)
Case Study:
TheIndustryTechnologyFacilitatorTheEnterpriseCentreExplorationDriveBridgeoDonAberdeenAB238GX+44(0)[email protected]
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