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Marine€Vessel€Support · Recovery€Conference Observations 1. ... Cayman€Islands)...

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1 Marine Vessel Support Planning
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Page 1: Marine€Vessel€Support · Recovery€Conference Observations 1. ... Cayman€Islands) nSeptember€13,€2004:€€Brushed€the€western€tip€of€Cuba. ... Hurricane€Ivan€MMS€Data€–Reports

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Marine Vessel Support

Planning

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Communications

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Forecasting and Monitoring ServicesForecasting and Monitoring ServicesForecasting and Monitoring Services

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Pre Storm Checklist Pre Storm Checklist

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Management Contingencies

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Remob after Hurricane

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Pipeline Breakout SessionPipeline Breakout Session ––ReportReportOutOut

TomTom WicklundWicklundBP Pipelines NABP Pipelines NA

July 27, 2005July 27, 2005

2005 Offshore Hurricane Readiness and2005 Offshore Hurricane Readiness andRecovery ConferenceRecovery Conference

Observations

1.1. Failure modes in general were typical,Failure modes in general were typical,but there were some significantbut there were some significantexceptions: large lateral movements andexceptions: large lateral movements andextents and a problem with one crossingextents and a problem with one crossing

2.2. Currently available (reported)Currently available (reported)information on failures is not sufficientlyinformation on failures is not sufficientlydetailed and consistent to understanddetailed and consistent to understandroot causesroot causes

3.3. Mudslides alone may not have causedMudslides alone may not have causedthe major displacementsthe major displacements

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Observations (cont’d)

nn Coordination of response betweenCoordination of response betweencompanies and agencies was a successcompanies and agencies was a success

nn Sonar techniques worked well for initialSonar techniques worked well for initialassessmentassessment

nn Pressure test with product wasPressure test with product wassuccessfully used to assure integritysuccessfully used to assure integrity

nn Incremental production loss due toIncremental production loss due topipeline damage was not necessarilypipeline damage was not necessarilylarge relative to other causeslarge relative to other causes

Future Needs

nn More accurate and detailed incidentMore accurate and detailed incidentreportingreporting

nn Joint industry and/or regulatoryJoint industry and/or regulatoryeffort to analyze Ivan failureseffort to analyze Ivan failures

nn Expand participation in API pipelineExpand participation in API pipelineteamteam

nn Improved postImproved post­­storm integrity plansstorm integrity plansnn Changes in standards orChanges in standards or

regulations???regulations???

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Kevin GaudetKevin GaudetChevron Pipe Line CompanyChevron Pipe Line Company

Hurricane Ivan  Storm Impact onHurricane Ivan  Storm Impact onPipelines and RisersPipelines and Risers

Hurricane IvanStatistics

n Formed:  September 2, 2004 as Tropical DepressionNine.

n Named Tropical Storm Ivan, September 3 thenHurricane Ivan on September  5, 2004.

n Highest Wind Speed: 165 mph (270 km/h), Category 5.

n Areas Affected:  The windward Islands, especiallyGrenada, Jamaica, Grand Cayman, Cuba, Alabama,Florida, and much of the eastern United States.

n After Ivan’s rebirth, it re­entered the GOM affectedTexas and Louisiana border.

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Hurricane IvanEffects

n September  7, 2004:  Passed directly over Grenadacausing major damage and loss of  life.

n September 11, 2004:  Passed over Jamaica causingsignificant wind and flood damage.  (Also effecting theCayman Islands)

n September 13, 2004:  Brushed the western tip of Cuba.

n September 16, 2004:  Struck the U.S. mainland near GulfShores, Alabama.

Hurricane IvanEffects ­ Continued

n September 18, 2004:  Remnants of Ivan drifted off themid­Atlantic coast and unleashed tornadoes on theeast coast.

n September 23, 2004:  The revived Ivan made landfallnear Cameron, Louisiana.

n Ivan damaged several Oil and Gas facilities in the Gulfof Mexico.

n Pipelines and Risers in the Gulf of Mexico weremoved, separated and damaged by the power of thestorm.

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Hurricane IvanStorm Track

Hurricane Ivan MMS Data –Reportsof Pipeline and Riser Damage

169 Reports of Pipeline and Riser Damage receivedby the MMS from Operators in the Gulf of Mexicofor Liquid and Gas Pipelines.

The compiled list contained the following information:

5 –Dents on Pipelines and Risers7 –Kinks Reported on Pipelines and Risers60 –Separations Reported on Pipelines and Risers2 –Reports on Risers Pulled Up.4 –Ruptures on Pipelines and Risers.7 –Twisted / Bent Reports on Pipelines and Risers.

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Hurricane Ivan MMS Data ­ Reports ofPipeline and Riser Damage

31 –“Other” Categories that range from:Splits in the pipelinesCracks in the WeldsExposed pipelinesPipeline Crossing DamagePipeline Movements – (Some in excessof 1 mile)

Riser Clamp Damage

24 –Bent Risers25 –Unknowns4 ­ Unclassified

Hurricane IvanMMS Data ­ Locations of Damage toPipelines and Risers

Damage Report Locations and distance from the eye ofIvan:

East Cameron –1 Report –Approx. 272 mi. WestSouth Marsh Island –3 Reports –Approx. 218 mi. WestEugene Island –2 Reports –Approx. 200 mi. WestShip Shoal –7 Reports –Approx. 160 mi. WestSouth Timbalier ­ 21 Reports –Approx. 125 mi. WestBay Marchand –3 Reports –Approx. 120 mi. WestGrand Isle –6 Reports –Approx. 110 mi. West

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Hurricane IvanMMS Data ­ Locations of Damage toPipelines and Risers

West Delta –6 Reports –Approx. 85 mi. WestBreton Sound –3 Reports –Approx. 63 mi. WestSouth Pass –15 Reports –Approx. 50 mi. WestMississippi Canyon –17 Reports –Direct ImpactMain Pass –73 Reports –Direct ImpactMobile Area –5 Reports –Direct ImpactViosca Knoll –7 Reports –Direct Impact

Hurricane IvanMMS Data ­ Locations of Damage toPipelines and Risers

0204060

80100

EC272mi

SM218mi

EI200mi

SS160mi

ST125mi

BM120mi

GI110mi

WD85 mi

BS63 mi

SP50 mi

MC,MP,MOVK

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Hurricane IvanHurricane Ivan ––Storm TrackStorm Trackand Lease Locationsand Lease Locations

Hurricane IvanMMS Data  ­ Damage Occurred

n Boarding Platform Risers Damaged –43n Departing Platform Risers Damaged –45n Platforms with Both Risers Damaged ­ 7n Pipelines Damaged –53n Pipelines Damaged at Crossings or

Pipeline Exposures­ 9n Pipelines Damaged at Subsea Tie­ins –8n Unknowns ­ 4

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Hurricane IvanMMS Data  ­ Damage Occurred

n Number of Pipelines with multiple damagelocations:

3 pipelines with 2 damage locations2 pipeline with 3  damage locations

n Pipeline and Riser damage reports relative tosize:

2” –14” = 15316” –36” = 16

Hurricane IvanHurricane Ivan ––Pipelines and RisersPipelines and RisersDamaged by Number and SizeDamaged by Number and Size

103Total73Total

13242

16343

27484

266146

128148

610910

112512

014114

016116

118518

020320

124124

026326

036136

Number DamagedSize (inches)Number DamagedSize (inches)

RisersPipelines

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Hurricane IvanHurricane Ivan ––PipelinePipelineand Riser Mudslide Activityand Riser Mudslide Activity

nn 21 Reports of Damage to Pipelines and21 Reports of Damage to Pipelines andRisers due to mudslides.Risers due to mudslides.

nn Reports of damage included:Reports of damage included:–– Separation of break away joints (safety devicesSeparation of break away joints (safety devices

designed to separate at predetermined loads).designed to separate at predetermined loads).–– Severed pipelines.Severed pipelines.–– Pipelines moving out of the Right of Way.Pipelines moving out of the Right of Way.–– Risers and Pipelines Damaged due to toppledRisers and Pipelines Damaged due to toppled

platforms.platforms.

Hurricane IvanHurricane Ivan ––PipelinePipelineMudslide ActivityMudslide Activity ––8” Pipeline8” Pipeline

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Hurricane IvanHurricane Ivan ––PipelinePipelineMudslide ActivityMudslide Activity ––10” Pipeline10” Pipeline

Hurricane IvanHurricane Ivan ––Pipeline MudslidePipeline MudslideActivityActivity ––8”, 10” & 20” Pipelines8”, 10” & 20” Pipelines

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1010

Hurricane IvanMMS Data

Thanks to Ms. Elizabeth Komiskey withThanks to Ms. Elizabeth Komiskey withthe Minerals Management Service forthe Minerals Management Service forproviding the pipeline and riser damageproviding the pipeline and riser damagereport information.report information.

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MISSISSIPPI DELTAPIPELINE SURVIVAL

STRATEGIES

byJames R. Hooper

Fugro­McClelland Marine Geosciences

BRIEF REVIEW OF DELTAGEOMOPHOLOGYFROM YESTERDAY

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ELONGATE LANDSLIDES

MUDFLOW ORIGIN, SEDIMENTTRANSPORT, AND DEPOSITION

SlumpFailureat Headof Gully

MudflowLobe atEnd ofGully

From Coleman et al, 1980

Mudflowsin theGully

CHARACTERISTICS OFSEAFLOOR FAILURE

FEATURES•Mudflow gullies tend to be

geologically active. Down slopemudslide movements destructive topipelines may occur at intervalsfrom several times a year to onceevery few years.

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CHARACTERISTICS OFSEAFLOOR FAILURE

FEATURES (cont.)•Mudflow lobes tend to be

geologically active, but not(generally) as active as the gullies.Down slope mudslide movementsdestructive to pipelines may occuronly every few years.

SEAFLOOR GEOMORPHOLOGY

From Coleman et al, 1980

Region ofMudflow Gullies

Region ofMudflow Lobes

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SEAFLOOR COLLAPSEDEPRESSIONS

From Coleman et al, 1980

Region ofCollapse

Depressions &Mudflow Gullies

Region ofMudflow Lobes

Region ofMudflowGullies

COLLAPSEDEPRESSIONS

From Coleman et al, 1980

ExampleCollapse

Depressions

ExampleMudflowGullies

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CHARACTERISTICS OFSEAFLOOR FAILURE

FEATURES (cont.)•Collapse depressions are locally

enclosed seafloor failures that aregenerally bounded by low scarps.

•They tend to be as geologicallyactive as mudflow gullies.

•Active depths of failure range from10­20 ft to 40­60 ft.

CONSIDER THEFOLLOWING PIPELINE

ROUTE SELECTIONSITUATIONS

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SEAFLOORGEOMORPHOLOGYOFFSHORE FROM

SOUTH PASS

From Coleman et al, 1980

The wellsmust go

near here

ROUTE PROBLEM #1

From Coleman et al, 1980

The wells must gonear here

(water depths ~80ft)

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ROUTE 1 RISKS

•The pipeline may have to cross one ormore collapse depressions.

•Seafloor lateral movements and/or lossof bearing support may cause periodicfailures.

•Over a period of years, new collapsedepressions may appear.

ROUTE 1 MITIGATION

•Failures are likely localized at collapsedepressions, and the pipeline can bererouted around the problem duringearly repairs, eliminating the problem.

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ROUTE PROBLEM #2

From Coleman et al, 1980

These two failureareas likely to grow

with time.

Likely to becomemajor (expensive)

problems

ROUTE 2 RISKS

•The pipeline must cross a mudflowgully plus several collapse features.

•Seafloor lateral movements in thegully and/or loss of bearing supportin collapse depressions may causeperiodic failures.

•Failure activity region may enlarge,depending on future hurricanewave activity.

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ROUTE 2 MITIGATION

•Failures may be “fixable” over time,by local rerouting during pipelinerepairs.

•On the other hand, conditions mayget worse, and the pipeline maybecome an economic burden.

From Coleman et al, 1980

The wellsmust go

near here

ROUTEPROBLEM #3

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ROUTE PROBLEM #3

From Coleman et al, 1980

No data in this

region Futureproblem

areas

ROUTE 3 RISKS

•The pipeline must enter unmappedterritory that is very likely to containseveral mudflow gullies andnumerous collapse depressions.

•The narrow “safe seafloor” regionsalong the route may be cut bygrowing mudflow gullies, creatingmajor problem areas.

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ROUTE 3 MITIGATION

•Failures may be “fixable” over time,by local rerouting during pipelinerepairs.

•On the other hand, conditions mayget worse, and the pipeline maybecome an economic burden.

From Coleman et al, 1980

ALTERNATIVEROUTE

CONCEPT

??

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Pipeline Breakout SessionPipeline Breakout Session

July 27, 2005July 27, 2005

Pipeline Breakout SessionPipeline Breakout SessionIntroductionIntroduction

Michael GordonMichael GordonExxonMobil Production Co.ExxonMobil Production Co.

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Pipeline Impacts from IvanPipeline Impacts from Ivan

nn 33,000 miles of pipeline in GOM; most33,000 miles of pipeline in GOM; mostpipelines performed satisfactorilypipelines performed satisfactorily

nn Multiple failure modesMultiple failure modes––Unprecedented pipeline movementUnprecedented pipeline movement––Anchor line/chain damageAnchor line/chain damage––Reefed or sunken vesselsReefed or sunken vessels––Rubbing of pipelines at crossingsRubbing of pipelines at crossings––TensionTension

Purpose of Breakout SessionPurpose of Breakout Session

nn Review efforts of industry pipelineReview efforts of industry pipelineworkgroupworkgroup

nn Address pipelineAddress pipeline­­specific hurricane issuesspecific hurricane issuesnn Identify opportunities to improve onIdentify opportunities to improve on

technology, design practices, operatingtechnology, design practices, operatingpractices, regulations and standardspractices, regulations and standards

nn Share experiences and lessons learnedShare experiences and lessons learned ––Participate!!!Participate!!!

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ObjectivesObjectives

1.1. Summarize ObservationsSummarize Observations(Successes and Failures)(Successes and Failures)

2.2. Summarize What Was LearnedSummarize What Was Learned3.3. Identify Needs for ImprovementsIdentify Needs for Improvements

•• Operating PracticesOperating Practices•• Design PracticesDesign Practices•• Regulations/StandardsRegulations/Standards•• TechnologyTechnology

Today’s ScheduleToday’s Schedule

–– IntroductionIntroductionnn Facilities & Geotechnical Storm ImpactFacilities & Geotechnical Storm Impactnn Response ManagementResponse Management ––Industry PerspectiveIndustry Perspective

–– BreakBreaknn Recovery (Operations, Assessment, Mitigation)Recovery (Operations, Assessment, Mitigation)nn Data GatheringData Gathering

–– LunchLunchnn Open Forum and Panel DiscussionOpen Forum and Panel Discussion

–– BreakBreak–– Plenary DiscussionPlenary Discussion ––Air & Marine VesselAir & Marine Vessel

SupportSupport–– Discussion on Breakout SessionsDiscussion on Breakout Sessions

–– 8:008:00 ––8:158:15nn 8:158:15 ––9:159:15nn 9:159:15 ––10:0010:00

–– 10:0010:00 ––10:2010:20nn 10:2010:20 ––11:3011:30nn 11:3011:30 ––12:0012:00

–– 12:0012:00 ––1:001:00nn 1:001:00 ––2:302:30

–– 2:302:30 ––2:502:50–– 2:502:50 ––3:203:20

–– 3:203:20 ––4:304:30

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Facilities & GeotechnicalFacilities & GeotechnicalStorm ImpactStorm Impact

nn Pipeline damage locationsPipeline damage locations

Response ManagementResponse Management

nn Preparations and evacuationsPreparations and evacuationsnn Hurricane trackingHurricane trackingnn Reconnaissance flightsReconnaissance flightsnn Operational responseOperational responsenn Head office responseHead office responsenn Incident Command SystemIncident Command System

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55

RecoveryRecovery

nn Three phases of recovery:Three phases of recovery:––Assessment of pipelinesAssessment of pipelines––Mitigation of pipeline damageMitigation of pipeline damage––Return to operationsReturn to operations

nn Regulatory approvalsRegulatory approvalsnn What went well? What needsWhat went well? What needs

improvement?improvement?

Data GatheringData Gathering

nn Pipeline Team’s effortsPipeline Team’s effortsnn JIP planningJIP planning

––PrePre­­storm vs. poststorm vs. post­­storm mapping ofstorm mapping ofseafloorseafloor

––StormStorm­­related pipeline damage inventoryrelated pipeline damage inventory––Analysis of pipeline failure causesAnalysis of pipeline failure causes

nn Request for data or participation in JIPRequest for data or participation in JIP

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66

Presenters and Panel MembersPresenters and Panel Members

nn Tom Wicklund, BPTom Wicklund, BPnn Kevin Gaudet, ChevronKevin Gaudet, Chevronnn Michael Gordon, ExxonMobilMichael Gordon, ExxonMobilnn Jim Hooper,Jim Hooper, FugroFugro­­McClellanMcClellannn Alex Alvarado, MMSAlex Alvarado, MMSnn Mark Wrzyszczynski, ShellMark Wrzyszczynski, Shellnn Aaron Demo, USCGAaron Demo, USCG

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11

2005 Offshore Hurricane Readiness and2005 Offshore Hurricane Readiness andRecovery ConferenceRecovery Conference

Pipeline Failures Data GatheringPipeline Failures Data Gathering

TomTom WicklundWicklundBP Pipelines NABP Pipelines NA

July 27, 2005July 27, 2005

nn How did pipelines on the OCS perform duringHow did pipelines on the OCS perform duringHurricane Ivan?Hurricane Ivan?

nn Does pipeline performance data raise concern for theDoes pipeline performance data raise concern for theadequacy of current design standards?adequacy of current design standards?

nn Did Ivan uncover pipeline installation or operationalDid Ivan uncover pipeline installation or operationalconcerns that warrant further consideration?concerns that warrant further consideration?

nn Was pipeline damage that resulted from Ivan differentWas pipeline damage that resulted from Ivan differentfrom historical experience infrom historical experience in GoMGoM??

Pipeline Team FocusPipeline Team Focus

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22

Pipeline DataPipeline Data

nn MMS pipeline damage data based on post Ivan NTLMMS pipeline damage data based on post Ivan NTL

nn Detailed company data primarily provided by APIDetailed company data primarily provided by APIteam members (Shell, BP & Chevron)team members (Shell, BP & Chevron)–– Initial focus was on hurricane impacted lines;Initial focus was on hurricane impacted lines;–– Data collection effort expanded to include pipelinesData collection effort expanded to include pipelines

that performed well and were located within thethat performed well and were located within theswathswath

Data AnalysisData Analysis

––MMS post Ivan data obtained by API teamMMS post Ivan data obtained by API team

––Pipeline operators modified data and reevaluatedPipeline operators modified data and reevaluated

––Performed comparison of pipeline operators dataPerformed comparison of pipeline operators datato MMS datato MMS data

––Not prudent to draw firm conclusions regardingNot prudent to draw firm conclusions regardingcause of failures (based on MMS data)cause of failures (based on MMS data)

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33

Pipeline Failure DataPipeline Failure DataSheetSheet

nn Segment ID:Segment ID: ______________________________________________________________________________nn Company:Company: ______________________________________________________________________________nn P/L NameP/L Name ______________________________________________________________________________nn Export or E&PExport or E&P ______________________________________________________________________________nn GoMGoM Block Location:*Block Location:* ______________________________________________________________________________nn Water Depth:*Water Depth:* ______________________________________________________________________________nn Pipeline Diameter:Pipeline Diameter: ______________________________________________________________________________nn Wall Thickness:Wall Thickness: ______________________________________________________________________________nn Pipe Grade:Pipe Grade: ______________________________________________________________________________nn Year Installed:Year Installed: ______________________________________________________________________________nn Design Basis:(psig)Design Basis:(psig) ______________________________________________________________________________nn Pipeline Orientation: (relative to shore)* _____________________Pipeline Orientation: (relative to shore)* _______________________________________________________nn Pipeline Contents:Pipeline Contents: ______________________________________________________________________________nn Failure Mode:Failure Mode: ______________________________________________________________________________nn S.G. w/contents:S.G. w/contents: ______________________________________________________________________________nn Burial Depth:Burial Depth: ______________________________________________________________________________nn Horizontal Displacement Distance:Horizontal Displacement Distance: ______________________________________________________________________________nn Horizontal Displacement Length:Horizontal Displacement Length: ______________________________________________________________________________nn Notes:Notes: ______________________________________________________________________________nn Weight CoatWeight Coat _____Type_____Type _____Amount_____Amountnn Mud Flow Area?Mud Flow Area? _____ Yes_____ Yes _____ No_____ Nonn Third Party Impact?Third Party Impact? _____ Yes_____ Yes _____ No_____ Nonn Pipeline Crossing?Pipeline Crossing? _____ Yes_____ Yes _____ No_____ No** Specific location of failure or damageSpecific location of failure or damage

Observations RegardingObservations RegardingFailure ModesFailure Modes

nn General observationsGeneral observations–– No predominant failure mode, pipelines experienced various typesNo predominant failure mode, pipelines experienced various types;;–– BP, CVX and Shell experienced similar types of failures;BP, CVX and Shell experienced similar types of failures;–– Performance in traditional mud slide areas consistent with histoPerformance in traditional mud slide areas consistent with historicalrical

performance;performance;–– Many failures in the delta area, west of the swath of the storm;Many failures in the delta area, west of the swath of the storm;

nn Failure modesFailure modes–– Large lateral displacement (several thousand feet);Large lateral displacement (several thousand feet);–– Anchor line/chain drag damage;Anchor line/chain drag damage;–– Reefed or sunken vessels being moved onto pipelines;Reefed or sunken vessels being moved onto pipelines;–– Req’dReq’d separation lost at crossings;separation lost at crossings;–– Pipeline failed due to tension;Pipeline failed due to tension;–– Only 1 riser was lost in shallow waterOnly 1 riser was lost in shallow water

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44

FindingsFindings

nn More data analysis isMore data analysis is req’dreq’d to draw conclusions;to draw conclusions;–– failures from Ivan does not seem to be atypical to historicalfailures from Ivan does not seem to be atypical to historical–– possible exception of the nearpossible exception of the near­­shore Mississippi River delta areashore Mississippi River delta area

nn Opportunities to explore:Opportunities to explore:–– Implications of disturbance and uplifting of sedimentation atImplications of disturbance and uplifting of sedimentation at

the mouth of the riverthe mouth of the river–– New mudflow areas possibly identified as a result of IvanNew mudflow areas possibly identified as a result of Ivan

»» May need to reconsider how we define mudflow areasMay need to reconsider how we define mudflow areas»» Potential for better mapping of unstable areasPotential for better mapping of unstable areas

–– Implications of storm surge; ebb or runImplications of storm surge; ebb or run­­off; and turbid flowsoff; and turbid flowson design criteria or pipeline configuration/orientationon design criteria or pipeline configuration/orientation

Path ForwardPath Forwardnn Industry/government effort to identify/collect data critical toIndustry/government effort to identify/collect data critical to

assessing pipeline performanceassessing pipeline performance–– Understand possible factors which contributed to storm impactUnderstand possible factors which contributed to storm impact–– Collect additional data required to perform analysisCollect additional data required to perform analysis

»» Damage/failuresDamage/failures»» Mapping (pipe movement, mudslides, etc… )Mapping (pipe movement, mudslides, etc… )

nn Expand makeExpand make­­up of API team to include representatives of oil andup of API team to include representatives of oil andgas transmission companies and/or pipeline design consultantsgas transmission companies and/or pipeline design consultants

nn Pursue value added study or research opportunitiesPursue value added study or research opportunities–– Geotechnical (mudslides, silting, seafloor mapping, etc..)Geotechnical (mudslides, silting, seafloor mapping, etc..)–– Storm trajectory impact on infrastructure configuration/orientatStorm trajectory impact on infrastructure configuration/orientationion

nn Outcome of pipeline performance assessment should determineOutcome of pipeline performance assessment should determineneed to revise pipeline standardsneed to revise pipeline standards

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55

Immediate NeedsImmediate Needs

nn Additional participants on API team*Additional participants on API team*nn Industry dataIndustry data

––Sonar/mapping dataSonar/mapping data––Failure dataFailure data

*contact any current team member*contact any current team member

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1

1

Hurricane Ivan PipelineSubcommittee

Pipeline Response Management inthe wake of Hurricane Ivan

July 27, 2005

2

Response ManagementHighlights

•Operations Preparatory Activities andEvacuation

•Hurricane Event and Tracking•Reconnaissance Flights•Field Operations Response•Head Office Response•National Response integrated with the ICS

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2

3

Operations Preparation

•Evacuation of non­essential personnel•Shutdown of Crude pipelines•Evacuation of all personnel•Shell Utilized ICS for the Evacuation.•BP had ICS team on Standby during

evacuation

4

Hurricane Event and Tracking

•Twice Daily updates from Impact Weather•Wind and wave fields overlaid on pipeline

system maps•Located repair assets and placed on first

refusal•Shell, Chevron, & BP placed construction

vessels on standby before storm

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3

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MAXIMUM CONDITIONS AT OFFSHORE LOCATIONS

PAT

H O

F H

UR

RIC

AN

E IV

AN

100+ MPH 74+ MPH 58+ MPH

74+ MPH

58+ MPH39+ MPH

MC­807”A”MC­809”A”

MC­685

MP­289

SP­62SP­65VK­956

MP­252

MC­194WD­104

WD­31

HM.ppt  09/17/04

6

Reconnaissance Flights

•Viewed what appeared to be extensivetopsides damage at many platforms

•Took several days to re­man the platforms(weather, damage, debris, utilities).

•Shell released standby vessels to othercompanies

•BP staffed Fort Jackson the morning afterlandfall to manage a suspected release ontheir MPOG system

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4

7

MURPHY MEDUSA

MC 528

8

Petronius VK786PETRONIUS PLATFORM1,750 FT WATER DEPTHQUARTERS & HELIPORT

DAMAGE

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5

9PETRONIUS PLATFORM

10

MP 289 “B”

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6

11

Operational Response

•Priority was given to production operationsto make safe, re­man, clean up, repair andrestore production operations

•Pipeline Operators communicatedcontinuously with Production Operations tocoordinate restarts and prioritize work.

•Pipelines were leak tested for 2 hours inaccordance with Notice to Lessees

12MP 69 PUMP STATION

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7

13

Operations Response (cont.)

• Overflights noted several sheens in MP 80 & 69• Began surveying pipelines subsea• Some pipelines were fully severed• Shell immediately dispatched a live­boat operation

manned by Stolt Divers and International Boats• Initially had indications that MPOG 18inch

pipelines may be compromised.

14

Drilling Rig Broke Loose from MooringCrossed Nakika Oil Line

With Rig Dragging Three Anchor Cables

Nakika North Drag Mark ­ West Side Nakika North Drag Mark –East Side

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8

15

Pipeline Head Office Response

• Sourced an available vessel to work in MP 69(relatively shallow water)

• Sourced survey vessels with Sidescan and/or ROVcapability to survey pipeline right of ways.

• Established a Project Command center tocoordinate assets

• Established Port Operations with full timeinspector to coordinate vessels

16

Inspection & Construction Equipment

• Survey:  Moana Wave, Captain Blake, Emma McCall• Dive Support Vessels:  Barge 1, CalDiver II, Mystic Viking, Sea Fox• Jackup  Boats:  Juan, Choctaw• ROV Vessels: Merlin, Mystic Viking, Uncle John, Ocean Intervention• Laybarge:  Pecos Horizon• Spud Barge: BH300, BH103• Derrick Barge:  Lili, Boaz• Various tugs, supply boats, crew boats, quarters barges, material

barges, etc.• Multiple Response vessels (LA, TX, FL Responders and support

craft) and equipment

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17

Shell Pipeline ConstructionOutcome

• Safety:  Over 190,000 man hours with no recordableincidents

• Construction Timing:  43 days total  (averages 184 peopleper 12 hour shift)

• Total Costs for Inspection, Cleanup, Repairs in 2004:>$40MM

• Expected Costs for Construction & Repairs in 2005:>$10MM

• Minimal Impact to Production –Less than a week for Nakikaand 1 day for Cognac –Due to cooperation of all Agencies,Contractors and Operators.

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• Site 1 –Severed Delta 20”line displaced ~2 miles to the east of itsoriginal position

• Site 2 –Nakika 18”line damaged at MPOG crossing in MP 69• Site 3 –Nakika 18”line severed in MP 151• Site 4 –Odyssey 12”line damaged in MP 70• Site 5 –Delta 20”piggable wye pulled away from Odyssey 20”• Site 6 –8”line pulled away from platform at SP 60 & pipeline

displaced• Site 7 –Connection on Bud 8”to allow BP’s MPOG production to

come online• Site 8 –Sunken Jackup barge on Odyssey 20”in MP 309• Site 9 –Disconnect Odyssey 12”from MP 289 “B”platform –

reconfigure SSTI

Shell Pipeline HurricaneIvan Worksites

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19

Site 1Delta 20”Severed

(MPOG is insame ditch)

Site 2Nakika/MPOG

Crossing

Site 3:Nakika Spool

Severed

Site 4Odyssey 12””

MP 69 “P”Platform

16”

20”

Site 5Original Wye

Location

Odyssey 20”

MPOG 18”Nakika 18”

Pompano 12”

MP 69Station

Delta 20”to Nairn

Delta 16”Crude to

Loutre Jct.

Cobia 12”

ALL LOCATIONS SHOWNARE APPROXIMATE

As­FoundPosition of 20”

After Ivan

20

Special Considerations

•Return of Hurricane Ivan•Dynamic Bottom Environment•Local and Displaced Wildlife•New equipment•Sharing of resources•Different kind of leak•New Security Requirements

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21Jackup Boat on Odyssey 20” in MP­309 –Site #8

20” P

ipel

ine

Sidescan Sonar Image

22Jackup Boat Recovery to Surface

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23

South Pass 60 Severed 8­inch Riser –Site #6

24NAKIKA Spool Severed in MP­151 –Site #3

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25MSRC ­ LOUISIANA RESPONDER AT NAKIKA SITE 2

26Nakika / MPOG Crossing –Site #2

End Connector

Spool Piece Repairs onboth MPOG & Nakika Pipelines

at Crossing Location

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27

National Response Integratedwith ICS

• Established ICS to work with Federal, State andLocal Authorities in overall response.

• Main focus was MP69, since this was the sourceof the visible oil.

• Priorities were clearly established– Stop the oil­regardless of where it was coming from– Protect the environment– Restore the pipeline systems– Do it all safely

28

Special Thanks

•Mike Coyne•Tommy Hutto•Jason Dollar•MMS•USCG

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2005 Offshore Hurricane Readiness and2005 Offshore Hurricane Readiness andRecovery ConferenceRecovery Conference

Recovery From IvanRecovery From Ivan

TomTom WicklundWicklundBP Pipelines NABP Pipelines NA

July 27, 2005July 27, 2005

RecoveryRecovery Return to ServiceReturn to Service

nn 3 Phases of Recovery3 Phases of Recovery––AssessmentAssessment––MitigationMitigation––Return to operationsReturn to operations

nn What went wellWhat went wellnn What needs improvementWhat needs improvement

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ScenarioScenario ––Displaced LineDisplaced Line

Acrobat Document

AssessmentAssessment»» OfficeOffice

nn Review SCADA data (immediately after storm)Review SCADA data (immediately after storm)nn Consultant studies (as data becomes available)Consultant studies (as data becomes available)

»» FieldFieldnn Visual of topsidesVisual of topsidesnn Over flightsOver flightsnn SonarSonarnn ROV surveillanceROV surveillancenn Diver inspectionDiver inspectionnn Pressure testPressure testnn PiggingPigging

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Sonar Data of Displaced PipeSonar Data of Displaced Pipe

Sonar Image @ MP144Sonar Image @ MP144

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Diver PhotoDiver Photo

MitigateMitigate

nn Equipment inspection & cleanupEquipment inspection & cleanup(topsides)(topsides)

nn StabilizationStabilizationnn Pipe repairPipe repairnn Pipe replacementPipe replacementnn Lift & moveLift & movenn Lay new pipeLay new pipenn Line loweringLine loweringnn Spill response supportSpill response support

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Regulator approval requiredRegulator approval required

––MMS for pipe in OCSMMS for pipe in OCS»» Pressure testPressure test»» RepairsRepairs»» RelaysRelays»» New layNew lay»» Modify/relinquishModify/relinquish RoWRoW

––OPS for pipe in state watersOPS for pipe in state waters––LaF&WLaF&W for pipe in marshlandsfor pipe in marshlands

Rebuild CrossingsRebuild Crossings

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Low Pressure Band ClampLow Pressure Band Clamp

Pipe ReplacementPipe Replacement

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Separation/CoatingSeparation/Coating

Lift & MoveLift & Move

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Sonar After Pipe MoveSonar After Pipe Move

Stabilize w/Screw AnchorsStabilize w/Screw Anchors

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Return to OperationsReturn to Operations

nn Temporary operationsTemporary operations––Reduced pressuresReduced pressures––Temporary connectionsTemporary connections

nn Return to fully rated operationsReturn to fully rated operationsnn Idle/abandonIdle/abandon

What Went WellWhat Went Well

nn SonarSonar ––good 1good 1stst identifier of problemidentifier of problemnn Interaction w/AgenciesInteraction w/Agenciesnn “Oil out” minimized during repairs“Oil out” minimized during repairs

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1010

Areas for ImprovementAreas for Improvement

nn Post storm integrity planPost storm integrity plannn PrePre­­storm sourcingstorm sourcing

––VesselsVessels––PersonnelPersonnel––MaterialsMaterials––ServicesServices

Post Storm Integrity PlanPost Storm Integrity Plan


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