Flexible Riser Integrity Assessment with advanced MEC-FITTM … · 2016. 2. 9. · -Inspection is...
Transcript of Flexible Riser Integrity Assessment with advanced MEC-FITTM … · 2016. 2. 9. · -Inspection is...
Flexible Riser Integrity Assessment withadvanced MEC-FITTM technique
Sebastian HartmannSales and Business Development Manager [email protected]
Subsea Expo 2016 - Aberdeen
© Copyright Innospection Ltd. 2016
Flexible Riser Integrity Assessment withadvanced MEC-FITTM technique
Sebastian HartmannSales and Business Development Manager [email protected]
Flexible Riser Inspection with MEC-FIT™
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
© Copyright Innospection Ltd. 2016
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
Unbonded Flexible Pipe
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Failure Modes (API 17J)
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Source:Hans Out / Shell 2010, How to live with flexible pipe ever after ?Krassy Doynov / ExxonMobil 2013, Improving standards and technology towards achieving robust design and safe operation of flexible risers
- Immediate integrity assurance due to presence of known defects (i.e.breached sheath, filled annulus)
- Future integrity assurance / asset lifetime extension
Reasons for Inspecting
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- Immediate integrity assurance due to presence of known defects (i.e.breached sheath, filled annulus)
- Future integrity assurance / asset lifetime extension
Flexible Riser Inspection with MEC-FIT™
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
© Copyright Innospection Ltd. 2016
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
MagnetisationLevel MFL
MagnetisationLevel MEC
Principle MEC (extended from SLOFEC)Magnetic Field controlled High Frequency Eddy Current
ECfield
Detection of far side defects
Signal Response
controlled Magnetic field
Background Inspection Technique
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MagnetisationLevel MFL
MagnetisationLevel MEC
Magnetic Field Lines
ECfield
Signal Response
Eddy Currentsensor
Detection of near side defects
- New Sensor type with field strength measurement
- Field strength control / analysis (retentivity point)
- higher Eddy Current Frequency
- higher sensitivity at increased stand
Splash Zone Inspection Tools(Riser / Caisson / Structure)
Subsea Pipelines Inspection Tools
Background Inspection Techniques & Tools
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Subsea Pipelines Inspection Tools
Flexible Riser / Riser / Mooring LineInspection Tools
Flexible Riser Inspection with MEC-FIT™
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
© Copyright Innospection Ltd. 2016
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
Ultrasonic MAPS-FR Digital Radiography(DRT)
MEC-FIT
(Electromagnetic)Magnetic stressmeasurementtechnique, staticext. mounted,measurement in ±15m from monitor
detection of :fatigue failure,through crackedwires
no penetrationthrough outer layer
Pulsed echoultrasoundtechnique,Ext. scan underwater, slow
detecting offlooding of annulus,thickness of outertensile armour onlyif flooded
Couplant required,
Electromagnetictechnique(Magnetic/EddyCurrent Field),dynamic fast scan
detection of:Corrosion (pitting),CracksWire misalignmentdetection in 1st , 2nd ,(partly 3rd layer)
No couplant required
Requires calibration
External radiographytechnique,static spot RT shots
detection of:Cracks,Corrosion (limitedmin wall lossdetection) Loss of interlock
Flexible Riser Inspection Techniques
NDT solutions for external Flexible Riser Inspection
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(X-ray ComputedTomographyVery highresolution singleline scan)
(Electromagnetic)Magnetic stressmeasurementtechnique, staticext. mounted,measurement in ±15m from monitor
detection of :fatigue failure,through crackedwires
no penetrationthrough outer layer
Pulsed echoultrasoundtechnique,Ext. scan underwater, slow
detecting offlooding of annulus,thickness of outertensile armour onlyif flooded
Couplant required,
Electromagnetictechnique(Magnetic/EddyCurrent Field),dynamic fast scan
detection of:Corrosion (pitting),CracksWire misalignmentdetection in 1st , 2nd ,(partly 3rd layer)
No couplant required
Requires calibration
External radiographytechnique,static spot RT shots
detection of:Cracks,Corrosion (limitedmin wall lossdetection) Loss of interlock
Scanner types & deployments
Top side deployable tools
MEC – Hug V1(WC ROV deployable)
MEC – Hug V2- Top side deployable 70
umbilical
- WC Class ROVdeployable
Scanner head(pole shoes & sensor array)
MEC-FIT Evolution Tools
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Manual Scanner (hand held)
MEC – Hug V2- Top side deployable 70
umbilical
- WC Class ROVdeployable
MEC – CombiCrawler- WC & Insp. ClassROV deployable
Magnetic Eddy Current – Flexible Riser Inspection Tool
a further development of the SLOFEC™ technique
–+ –-–0
EC/MFCURRENTSENSORS
MAGNETICCIRCUIT
–+ –-–0
MEC-FIT™ PRINCIPLE
MEC-FIT Background Technique
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DEFECT IncreasedMagnetic Flux
Level
EC/MFCURRENTSENSORS
TEST PIECEMAGNETIC FIELD
LINES
EDDYCURRENT
PROBE FIELD
Comparison of different magnetization levels on the wire magnetizationMagnetisation Level
Outer Sheath
Armoured LayerPressure Armour
Pressure SheathCarcass
Magnetisation Unit
MEC-FIT Background Technique
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B, Tesla
Depiction of wire gap. With the magnet on additional wires of the lowerinternal layer become visible (Pipe 6).
MEC-FIT – FLEXIBLE RISER SCANNING
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Signal Phase Analysis - Relevant Indications vsirrelevant indications
General Eddy Current Signal to colourmapping production
MEC-FIT Evolution Process
Reporting for standard 35⁰ type flexibleriser inspection
Mag onvert. Phase
090180270360Orientation [deg]
Mag onhoriz. Phase
090180270360Orientation [deg]
Mag offhoriz. Phase
090180270360Orientation [deg]EL [m]
Mag offvert. Phase
090180270360Orientation [deg]
90180 1802700 90180 1802700 90180 180270090180 1802700
1
2
1
2
1
2
1
2
Riser Section 2 ( EL -2.5 m to EL 2.5 m)
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
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Mag onvert. Phase
090180270360Orientation [deg]
Mag onhoriz. Phase
090180270360Orientation [deg]
Mag offhoriz. Phase
090180270360Orientation [deg]EL [m]
Mag offvert. Phase
090180270360Orientation [deg]
90180 1802700 90180 1802700 90180 180270090180 1802700
1
2
1
2
1
2
1
2
Riser Section 2 ( EL -2.5 m to EL 2.5 m)
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
Signal analysis cataloquelocal wallloss
Wirethinning
Tests / Signal analysis
MEC-FIT Evolution Process
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Localiseddrilleddefectsfrom insideout
Wirecrack
Signal Catalogue (2014)
Effect of Wire Lay Angle on Detection Capabilities
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15° lay angle 55° lay angle
Flexible Riser Inspection with MEC-FIT™
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
© Copyright Innospection Ltd. 2016
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
North Sea Project – Wire Crack DetectionExternal inspection of 55 degree wire Flexible Riser
Flexible Riser set up:
Target of the technique verification to detect tight cracking in single wire with expectedorientation of 45° and 90°to the wire cross section. Cracking to be detected on theinner wire & outer wire layer.
15.3mm
MEC-FIT Case Studies
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North Sea Project – Wire Crack DetectionExternal inspection of 55 degree wire Flexible Riser
Flexible Riser set up:
Target of the technique verification to detect tight cracking in single wire with expectedorientation of 45° and 90°to the wire cross section. Cracking to be detected on theinner wire & outer wire layer.
Additional Task:MEC-Combiscanner deployedby inspection classROV from top of theinstallation
Flexible Riser – subsea (UK)Crack Detection Tests at 55 degreewire angle 13
Flexible Wire set up
MEC-FIT Case Studies
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Assembly of the structureTest Defects
Picture Defect 3 Picture Defect 6
Flexible Riser – subsea (UK) Crack Detection Tests at 55 degree wire angle
Signals of the defects in the nearside of the outer tensile. Theright shows a sketch of thedefects.
Defects 3 (80%, 45°) and 4(100%, 45°) with magnet on(left) and off (right)
MEC-FIT Case Studies
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Defects 3 (80%, 45°) and 4(100%, 45°) with magnet on(left) and off (right)
Signals of defects in outer tensile layerfar-side.
Flexible Riser – subsea (UK) Crack Detection Tests at 55 degree wire angleSignals of the defects in inner tensile layer (by different blind tests, wires changed)
MEC-FIT Case Studies
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Relation crack Depth vs amplitude Detection Conclusion
Big guy watching the scene ...
MEC-FIT Case Studies
Scanning in circumferential direction
Inspection Class ROV deploying MEC-FITTM Scanner
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Flexible Riser Inspection with MEC-FIT™
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
© Copyright Innospection Ltd. 2016
CONTENTS
- External Inspection of Flexible Riser
- MEC Technique
- MEC-FIT Flexible Riser Inspection
- Case Study
- Next Steps
- HD camera integration to scanner Integration of HD camera systems for outersheath condition assessment
- MEC Automatic analysis algorithm Ongoing development eddy current signalanalysis algorithm and integration intoassessment software
R&D, Ongoing Evolution Process
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- HIGH FIELD EDDY CURRENT SENSORS
Penetration through the stiffenermaterial and Polyethylene coating.Target to detect defects at surface ofouter armoured wire in focused area.
Integration of HD camera systems for outersheath condition assessment
- Inspection is an integral part of the process for flexible pipe lifetimeextension.
- The MEC-FITTM technique is capable of detecting defects such as single &multiple wire cracking, corrosion and wire disorganisation in 2 (3) wirelayers
- Demanding projects including inspection of a flexible having a 55° wirestructure and a 15.3mm thick outer sheath have been mastered.
- Different inspection tools implementing the MEC-FITTM technique areavailable for various tool deployment requirements.
Summary
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- Inspection is an integral part of the process for flexible pipe lifetimeextension.
- The MEC-FITTM technique is capable of detecting defects such as single &multiple wire cracking, corrosion and wire disorganisation in 2 (3) wirelayers
- Demanding projects including inspection of a flexible having a 55° wirestructure and a 15.3mm thick outer sheath have been mastered.
- Different inspection tools implementing the MEC-FITTM technique areavailable for various tool deployment requirements.
Innospection LimitedHowemoss Avenue
Kirkhill Industrial Estate
Dyce - Aberdeen - AB21 0GP
United Kingdom
P +44 (0) 1224 724 744
F +44 (0) 1224 774 087
Web: www.innospection.com
THANK YOU FOR YOUR ATTENTION
© Copyright Innospection Ltd. 2016
Innospection LimitedHowemoss Avenue
Kirkhill Industrial Estate
Dyce - Aberdeen - AB21 0GP
United Kingdom
P +44 (0) 1224 724 744
F +44 (0) 1224 774 087
Web: www.innospection.com