(Technip) Riser Integrity Management

Riser IntegrityManagementHSE Flexible Pipe Integrity Forum

November, 2008, Aberdeen

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ConclusionsV_Monitoring TechnologiesIV_Example of RIM System: DaliaIII_Main Interfaces for RIMII_

_ IntroductionIContents

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Main Steps of Riser Integrity Management

Task 1 Task 2 Task 3 Task 4

Study Basis ofDesign

Inspection &MonitoringProgrammeDefinition

Inspection &MonitoringProgrammeExecution

Post-processingof riser data and

conclusionsabout riser

integrity

Programme Preparation Onshore Offshore Operations IM Post-ProcessingOnshore

Year N +1

First Year

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Main Interfaces1 -Order and Specify Riser

2 –Design, Manuf, Install RiserIntegrate Monitoring hardware

3 – Failure Mode AnalysisProvide data

4 – Define RIM programme

5 – Monitoring Hard and softwaredata Aquisition, process…

Data management, Interpretation - 7

Integrity Assessment - 8

9 – Act, Decide

Operator

Riser Manuf-Installer

RIM Service Provider

H&S provider

6 – Provide Additional data

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ResponsibilitiesOperator� Specify

� Provide AdditionalData from System

� Act on Results

� ImplementRecommendations

Riser Manufacturer/ Installer

� Provide RelevantInfo� Design� Manufacturing� Installation� Commissioning

� Integrate hardwarein Riser

� FMA

� IntegrityAssessment

� MakeRecommendations

RIM ServiceProvider

� Establish RIMProgramme

� CoordinateActivities

� Manage,Analyze data

� Interpret Data

H&S Provider

� ProvideHardware,Software

� Install itOffshore

� Service andMaintain

� Data Transfer,Analysis

Task 1&

Task 2

Task 3

Task 4

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Dalia – RIM SCOPE► What: Monitoring, testing & inspection of 8 IPB risers, 2 GI & 4 WI risers► Where: On Dalia flexible risers –► How long: During the entire field life► How: Annual review of data & yearly follow-up report delivered to the

Client + Annual optimization and adjustments of the schedule + regulargeneral interaction with asset

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Involved Parties► Operator : Total

► RIM Service Provider : Genesis (Technip)

► Riser Manufacturer & Installer: TechnipFrance / Flexifrance

► H&S Providers:• Schlumberger: DTS system inspection & maintenance• Force Technology: Vent Gas Monitoring system maintenance

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Dalia RIM: Services Overview

Operating ConditionsSurveillance

� P,T enveloppe� Peaks & shut-down� DTS

External IntegritySurveillance

� ROV & visual insp� DTSRiser Mechanical &

Plastic Ageing� Vent gas analysis� Polymer coupon� Plastic ageing analysis�Fatigue analysis

Annulus IntegrityMonitoring

� Vacuum tests� Vent system check-up� Peaks & Shut-down

Insp. & Maint. OfMonitoring System

� VGM� DTS�…

Riser IM

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2008 Programme Review► Inspection & maintenance on FPSO:

• DTS system: Completed by Schlumberger• Vacuum tests & topsides inspections by Flexifrance:• VGM system maintenance : Force Technology

► Vent gas analysis: Performed in June 2008 – Conclusions issued in theYearly Report

► Yearly Report: To be issued in December 2008 / January 2009► Key points:

• Importance of strong relationships between key players (knowledgetransfer, access to in-house experts)

• Initiate early discussion• Data gathering is key

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Flooded Annulus Detection� Perform regular inspections to detect possible water ingress

� vacuum test� N2 Gas injection and control of the injected volume

� Perform regular subsea examination

� Gas venting monitoring device� Measure any sudden increase in the gas flowrate� Presence of water at the venting ports

� Implement PIM (pipe integrity management)� P & T° history� Fluid history� Annulus history

Annulus vent ratemonitor

0

5

10

15

20

25

30

35

40

45

50

24.05.2000

22:00

25.05.2000

10:00

25.05.2000

22:00

26.05.2000

10:00

26.05.2000

22:00

27.05.2000

10:00

27.05.2000

22:00

28.05.2000

10:00

28.05.2000

22:00

29.05.2000

10:00

29.05.2000

22:00

30.05.2000

10:00

30.05.2000

22:00

31.05.2000

10:00

31.05.2000

22:00

01.06.2000

10:00

01.06.2000

22:00

02.06.2000

10:00

02.06.2000

22:00

03.06.2000

10:00

03.06.2000

22:00

04.06.20

0010:

00

04.06.2000

22:00

05.06.20

0010:

00

05.06.2000

22:00

06.06.2000

10:00

Average 3 Kanal 108Average 5 Kanal 108Tid Kanal 108

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Temperature Monitoring: DTS (1/2)� Distributed Temperature Sensing (DTS) technology :

� ‘Raman Reflectometry’ (OTDR, analysis of back-scattered light)� Continuous temperature profiles along each fibre with a resolution of 1m and very

good accuracy (+/- 0.5°C) and resolution about 0.1°C� Integration in the Flexible Pipe Manufacturing process:

– SS tubes integrated in Flexible Pipe Manufacture (Armour layer or bundle)– Optical fibre inserted inside SS tubes

SS tubes

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� Good Sensitivity of system

� Calibration of model to forecast temperature in different elements ofPipe.

� Applications� Flow Assurance� Annulus Flooding

Temperature Monitoring: DTS (2/2)

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Curvature Sensor� ‘subC Rods’ : based on Optical Fibre FBG sensors

� GRP rod with 4 optical fibres� Sensors at about 1m (or less) intervals

� Integration in Bend Stiffener� 4 moulded voids included in design

� Calibration of System� Solutions have been developed

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Acoustic Emission of wire Rupture� Used on Full Scale test Several times

� 2002 Tensile test on the traction bench in LeTrait� 2007 Corrosion Fatigue test

� Additional work ongoing to qualify for Offshore use.

� Calibration, fixation and location on flexible pipe needs closecollaboration

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CONCLUSIONS� Complex process

� Many players� Many interfaces

� Technip view:� Integrate under Company an Overall Service

– To add value to the process– To deliver asset life expectations

� Each player needs to fulfill its role� Flexible Manufacturer (in particular access to in-house expertise)� Monitoring Hardware/Software Supplier� RIM Service Provider (at start and during lifetime - importance of

historical events recording)� Operator

(Technip) Riser Integrity Management

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