qatar petroleum technical directorate - alhorr site - concept to implementation.pdf · qatar...
TRANSCRIPT
Qatar PetroleumQatar PetroleumTechnical DirectorateTechnical Directorate
Jassim AlhorJassim AlhorPipelines EngineerPipelines Engineer
Submarine PipelinesSubmarine PipelinesConcept to ImplementationConcept to Implementation
From Concept From Concept ……
To Implementation To Implementation ……
BH-N09 WHJ & Pipelines
12” NGL Pipeline Project
SSIV Project
BH-Arab C Development
Offshore Pipelines ProjectsOffshore Pipelines Projects
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Sub Sea Isolation ValvesSub Sea Isolation Valves
Install Sub Sea Isolation Valves on pipelines Install Sub Sea Isolation Valves on pipelines networks to isolate the networks to isolate the platformsplatforms during during maintenancemaintenance
Project DescriptionProject Description
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PSPS--33 BHBH--M05M05
BHBH--G09G09
Sub Sea Isolation ValvesSub Sea Isolation Valves
New ValvesNew Valves RiserRiser
Spool PieceSpool Piece
SeabedSeabed
SupportsSupports
FlangesFlanges
3D STRESS MODEL3D STRESS MODEL
ModificationModification
ModificationModification
CAESAR IICAESAR II
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Sub Sea Isolation ValvesSub Sea Isolation Valves
My ResponsibilitiesMy Responsibilities••3D Modeling Stages:3D Modeling Stages:
••Review AutoPipe original modelReview AutoPipe original model••ReRe--model using Caesar IImodel using Caesar II••Modify Caesar II modelModify Caesar II model
••Examining Results:Examining Results:••Allowable stresses not exceededAllowable stresses not exceeded••Allowable spans not exceededAllowable spans not exceeded
StressesStresses(MPa)(MPa)
NodesNodes
AutoPipe Stresses (no valves)AutoPipe Stresses (no valves)Caesar II Stresses (no valves)Caesar II Stresses (no valves)Caesar II Stresses (with valves)Caesar II Stresses (with valves)
STRESS PLOTSTRESS PLOT
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BHBH--N09 WHJ ProjectN09 WHJ Project
••No. of Pipelines: 3 + 1 umbilicalNo. of Pipelines: 3 + 1 umbilical••Services:Services:
••High pressure bulkHigh pressure bulk••Low pressure bulkLow pressure bulk••Gas liftGas lift
••Sizes: 8Sizes: 8--12in diameter12in diameter••Total Length: 14km longTotal Length: 14km long••Contract Duration: 1 yearContract Duration: 1 year••Contractor: NPCCContractor: NPCC
Project DescriptionProject Description
BHBH--N09N09
PSPS--33
BHBH--SCSC
BHBH--M05M05
BHBH--G09G09
88”” HP PipelineHP Pipeline
1212”” LP PipelineLP Pipeline& Umbilical& Umbilical
88”” GL PipelineGL Pipeline
New PipelineNew PipelineExisting PipelineExisting Pipeline
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BHBH--N09 WHJ ProjectN09 WHJ ProjectDesign Phase ResponsibilitiesDesign Phase Responsibilities••Review and comment on Review and comment on design reportsdesign reports
Examples:Examples: wall thickness, free spans, crossings, riser spans, pipe wall thickness, free spans, crossings, riser spans, pipe stacking and loading, etc.stacking and loading, etc.
In Depth:In Depth: incorporating new spans code, developing calculation incorporating new spans code, developing calculation sheets, revising allowable spans.sheets, revising allowable spans.
••Review and comment on Review and comment on drawingsdrawingsExamples:Examples: field layout, alignment sheets, risers arrangement, field layout, alignment sheets, risers arrangement, spool pieces layout, protection cages, etc.spool pieces layout, protection cages, etc.
In Depth:In Depth: reviewing protection cage design, improving valves reviewing protection cage design, improving valves protection, ensuring diver access.protection, ensuring diver access.
••Review and comment on Review and comment on procedureprocedureExamples:Examples: concrete coating, coal tar enamel coating, Neoprene concrete coating, coal tar enamel coating, Neoprene coating, spools fabrication, installation, etc.coating, spools fabrication, installation, etc.
In Depth:In Depth: review international codes, review QP specifications, review international codes, review QP specifications, bringing project specifications up to minimum requirements.bringing project specifications up to minimum requirements.
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BHBH--N09 WHJ ProjectN09 WHJ Project
Fabrication Phase ResponsibilitiesFabrication Phase ResponsibilitiesWitness fabrication activitiesWitness fabrication activities
(pipeline spools, anodes installation)(pipeline spools, anodes installation)
Witness coating activitiesWitness coating activities(coal tar, concrete, Neoprene)(coal tar, concrete, Neoprene)
Provide technical supportProvide technical support Presentation to managementPresentation to management
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BHBH--N09 WHJ ProjectN09 WHJ Project
Installation Phase ResponsibilitiesInstallation Phase Responsibilities••Witness pipe laying activitiesWitness pipe laying activities
(start(start--up, layup, lay--down, anode spacing, subsea ROV down, anode spacing, subsea ROV survey, umbilical arraignment & strapping, etc.)survey, umbilical arraignment & strapping, etc.)
••Review installation reportsReview installation reports(laying stresses, etc.)(laying stresses, etc.)
Lay BargeLay Barge
StingerStinger
Firing LineFiring Line 88out ofout of
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1212”” Pipeline RehabilitationPipeline Rehabilitation
Project OverviewProject Overview••from PS1 to from PS1 to MesaieedMesaieed••NGL serviceNGL service••X52 12X52 12”” Diameter & 9.5mm thickDiameter & 9.5mm thick••120km long120km long
•• 89km offshore89km offshore•• 32km onshore32km onshore
••Installed in 1977Installed in 1977••Not operational since 1999Not operational since 1999••Blockage/Leakage extentBlockage/Leakage extent
1212”” NGL Pipeline Land Fall PointNGL Pipeline Land Fall Point
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1212”” Pipeline RehabilitationPipeline Rehabilitation••Work Tendered:Work Tendered:
Developing rehabilitation methodDeveloping rehabilitation methodIdentifying blockage extentIdentifying blockage extentCleaning remaining lengthCleaning remaining lengthRecommending way forwardRecommending way forward
Providing support during:Providing support during:PrePre--tender presentationtender presentationMidMid--tender presentationtender presentationCloseClose--out presentationout presentation
••My Responsibilities:My Responsibilities:Develop methodologyDevelop methodologySurvey siteSurvey siteEvaluate bids technicallyEvaluate bids technicallyRespond to clarificationsRespond to clarifications
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BHBH--Arab C DevelopmentArab C Development
••No. of Pipelines: 12No. of Pipelines: 12••No. of Umbilicals: 10No. of Umbilicals: 10••Services:Services:
••Produced GasProduced Gas••Injection GasInjection Gas••Fuel GasFuel Gas••MakeMake--up Gasup Gas
••Sizes: 6Sizes: 6--12in diameter12in diameter••Total Length: 46km longTotal Length: 46km long
Project DescriptionProject Description
New FacilitiesNew FacilitiesExisting FacilitiesExisting Facilities
WellWellHeadHead
JacketsJackets
PSPS--33
PipelinesPipelines
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BHBH-- Arab C DevelopmentArab C Development
••Reviewed Tender DocumentReviewed Tender Document(Scope of work, design basis, design reports, specifications, dr(Scope of work, design basis, design reports, specifications, drawings) awings)
••Participated in Technical Bids EvaluationParticipated in Technical Bids Evaluation(review offers, review/comment on qualifications, attend eval(review offers, review/comment on qualifications, attend evaluation meetings) uation meetings)
••Reviewed Pipeline Materials Codes & SpecificationsReviewed Pipeline Materials Codes & Specifications(line pipe, flanges, valves, fittings, pigs launchers and rec(line pipe, flanges, valves, fittings, pigs launchers and receivers)eivers)
••Involved in 18Involved in 18”” Dukhan Gas Lift Pipeline IncidentDukhan Gas Lift Pipeline Incident(review incident report, visit incident site, comment on stress (review incident report, visit incident site, comment on stress model)model)
Involvements and ResponsibilitiesInvolvements and Responsibilities
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110 Pages110 Pages
Pipelines Design PremisesPipelines Design Premises
LengthLengthWeightWeight
Wall ThicknessWall ThicknessCollapseCollapseBucklingBuckling
Internal CorrosionInternal CorrosionVertical StabilityVertical StabilityLateral StabilityLateral Stability
InsulationInsulationTemp. ProfileTemp. Profile
ExpansionExpansionVortex LimitsVortex Limits
RiserRiserAnalysisAnalysis
UmbilicalUmbilicalAnalysisAnalysis
Installation Installation AnalysisAnalysis
DefectDefectAnalysisAnalysis
PipelinePipelineAnalysisAnalysis
Riser VortexRiser VortexSpool SpanSpool Span
Wave VelocityWave VelocityStrouhalStrouhal’’ss No.No.
Overall DensityOverall DensityWavesWaves
StabilityStabilityPullPull--in Loadin LoadJJ--tube Clamptube Clamp
Amplification No.Amplification No.WavesWaves
StackingStackingRoll ForcesRoll ForcesPitch ForcesPitch Forces
Stanchion DesignStanchion DesignStanchion WeldStanchion WeldSea FasteningSea Fastening
Deck LoadDeck LoadCable DrumCable Drum
BuckleBuckleFatigueFatigue
Defect LengthDefect LengthFailure PressureFailure Pressure
Safe PressureSafe PressureFailure ModesFailure Modes
DiameterDiameterPressure DropPressure DropDynamic SpansDynamic Spans
Static SpansStatic SpansBar BucklingBar Buckling
Local BucklingLocal BucklingAnodesAnodesWavesWaves
Critical VelocityCritical VelocityAdded MassAdded Mass
Concrete StiffnessConcrete StiffnessDragDrag
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In SummaryIn Summary
Skills GainedSkills Gained••Able to perform detailed offshore pipelines design independentlyAble to perform detailed offshore pipelines design independently••Possess practical experience about pipelines fabrication & instaPossess practical experience about pipelines fabrication & installationllation••Able to use specialized engineering programsAble to use specialized engineering programs
Way ForwardWay Forward••Be exposed to different design philosophies (stalkBe exposed to different design philosophies (stalk--on risers, insulation)on risers, insulation)••Further appreciate multiFurther appreciate multi--discipline interaction (process, structures)discipline interaction (process, structures)••Understand advanced studies in offshore engineering (installatioUnderstand advanced studies in offshore engineering (installationsnsdynamics, geotechnical engineering, safety & environment enginedynamics, geotechnical engineering, safety & environment engineering)ering)
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From Concept From Concept ……
To Implementation To Implementation ……