02 foinaven well case study
TRANSCRIPT
![Page 1: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/1.jpg)
Re-writingtheWestofShetlandRecordBookThroughdeploymentofnewinnovativetechnologies
ICoTA RoundTable– Nov18th-19th 2009
JasperNaylor- BP/AndySkinner- RedSpider
![Page 2: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/2.jpg)
2
SettingtheScene
Foinaven Field, West Of Shetland
� BPOperated(72%BP/28%
Marathon)
� Subsea– 400m- 530m
� Harshenvironmentinremotelocation
� TransoceanRatherSemiSubmersible
� Increasingcostchallenge
� StrongfocusonTechLimitprocess
![Page 3: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/3.jpg)
3
WellP16– sidetrackcandidate
� On-line1996
� Increasingwatercut
P16z Sidetrack
� CompletedawayfromadvancingW16waterfront
� 550mUp-Dipofexistingwellbore
� Existinguppercompletiontubingcutabovepackerandpulled
� Whipstock setin95/8” casingandwindowmilled
� 8½” SidetracktoTD
Re-completion
� NewLower&Uppercompletioninstalled
![Page 4: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/4.jpg)
4
Typical De-completionSteps
• PullTreeCap
• DeployEDP/LRP&DBR
• Bullheadtubingcontentswithseawaterandpill
• RUslick-lineandPCE
• Makedriftrunwithslick-linetobelowplugsettingdepth
• RIHdeepsetplugonslick-lineandsetbelowcompletionpacker
• Testplugto4000psi.
• RIHwithtubingpunchonslicklineandpunchtubingbelowgauge mandrel
• Displacewelltoinhibitedbrinebystraightcirculationandpassreturnsthroughventdown
packageandfiltrationunit.
• RIHJRCtubingcutterandcuttubingabovepunchdepth.
• RIH4.875” QXplugonslick-lineandsetintubinghanger.Testplugto5000psi.
• RUslick-lineonannulusandinstall1.937” QXplug.Testplugto5000psi.
• RDslick-lineandPCE
• RecoverDBR,EDP/LRPandXmasTree
• Runproductionflow-lineandannuluspressurecaps.
• RunBOPandMarineRiser
• TestBOPconnectionto5000psi
• RunTHROT/THOJonDBRandsurfacetreeandlatchontotubinghanger
• RUslickline&PCEonproductionboreandretrieve4.875” QXplug.
• RUslicklineonannulusboreandretrieve1.937” QXplug.
• Closeupperannularandunseattubinghanger
• Circulateoutgaspocketbelowhangerwithreturnspassedthroughchokemanifold
• LDSurfaceTree,OpenannularandPOOHDBR,THROT/THOJwithtubinghangerand
completiontubing.
![Page 5: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/5.jpg)
5
Optimized De-completionStepsw/hRED
• Skid Rig from W17 to P16
• Well Handover
• Pull Tree Cap
• Deploy EDP/LRP & DBR
• Bullhead tubing contents with sea water and pill
• RU slick-line and PCE
• Make drift run with slick-line to below plug setting depth
• RIH Omega plug on slick-line and set below completion packer
• Test plug to 3600psi.
• RIH Schlumberger Power Cutter on slick-line to +/- 2260m and cut tubing.
• Displace well to inhibited brine by straight circulation and pass returns through vent down
package and filtration unit.
• RIH 4.875” QX plug with Hydraulic RED valve on slick-line and set in tubing hanger. Test
plug to 5000psi.
• RU slick-line on annulus and install 1.937” QX plug. Test plug to 5000psi.
• RD slick-line and PCE
• Recover DBR, EDP/LRP and Xmas Tree
• Run production flow-line and annulus pressure caps.
• Run BOP and Marine Riser
• Test BOP connection to 5000psi
• Run THERT on drill pipe and latch on to tubing hanger
• Pressure string to Hydraulic RED opening window for 10 minutes to open valve
• Close upper annular and unseat tubing hanger
• Circulate out gas pocket below hanger with returns passed through choke manifold
• Open annular and POOH THERT with tubing hanger and completion tubing on drill pipe.
![Page 6: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/6.jpg)
HydraulicREDBenefits
1. 24hrs rig time saved vsrunningDBR
2. ContributedtofastestFoinavenDe-completion(15days)
3. ReducedHSEexposure
4. Reducedexposuretoweather
![Page 7: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/7.jpg)
7
P16zCompletion– eRED
Pre-Installed
eREDand
AnnulusFilter
SubinTubing
Hanger
Before&After
ROVClean-UP
� eREDinstalledintubinghangeronshore
(Openposition)
� Uppercompletionrun,packerset/tested
>closeeRED.
� PullBOPs,runtree>openeRED
� Note:Addedopenfrombelowoption
� Confirmnopressurebelow,pulleREDand
annulusfiltersub‘OpenHole’ (noPCE)
![Page 8: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/8.jpg)
ElectronicREDBenefits
1. Slicklinerunscutfrom8to2!
2. 12hrs rig time saved
3. ReducedPOBrequirements,HSE&weatherexposure
4. ContributedtofastestFoinavencompletion(14days)
![Page 9: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/9.jpg)
9
InSummary
� FirstsubseacompletionutilisingbothhRED andeREDtechnology
� Selectedthanksto‘TechLimit’ initiativewithinBPD&Cteam
�Elimination / simplification of critical path activities
� hRED andeREDhelpedsetnewbenchmarkforFoinavencompletion
activity
� A‘measuredrisk’ ratherthanagamble
� i.e. potential loss = 6hrs / potential gain = 24hrs
� ExactsameeREDoptimizationemployedonthePBLJrig30dayslater
andresultedinsametimesavings
� TheREDfamilyofproductsallowedustofindanewwayofworking,
withincreasedefficiencyandreducedriskexposure.
![Page 10: 02 Foinaven Well Case Study](https://reader034.vdocument.in/reader034/viewer/2022042813/54485b13afaf9f39088b48c1/html5/thumbnails/10.jpg)
AnyQuestions?
ThanksForListening!