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Condition & Performance Monitoring Proactive Maintenance of Subsea Installations
Ingvar Koppervik
Presentation lay-out
1. Subsea development– past and current state of the art
2. Predictive & proactive maintenance– new operation philosophy
3. Subsea installation monitoring technology– novice to intelligent
4. Preventive maintenance in practice– AI Card failure in a Subsea Control Module
5. Summary– CPM main advantages
3
Subsea Development
FPSOTLP
Light WellIntervention
GuidelinelessDeepwater Trees
Subsea ManifoldSmart Well
Control Systems Subsea TemplateSystems
Standard SubseaTrees
ROV & Tie-In Systems
Subsea Processing
MSVFixed
Platform
Reactive to Proactive Maintenance
• Increased maintenance costs • Harsh environments• Inaccessible environments• Environmentally sensitive areas• HSE• Integrated Operations
Reactive to Proactive Maintenance
Proactive
Planned
Reactive
Don’t fix Single sensortrending
KPI trending
TCI trending
Collaboration
Novice to intelligent
Ope
ratio
nal e
xcel
lenc
e
6
Enabling Technology,Technical Condition Index (TCI)
• TCI takes KPI (Key Performance Indicators) several steps further– TCI takes in the complete picture
– TCI build expert knowledge into the system
– TCI summarize knowledge about plant integrity by aggregation from the bottom up
• Focus on trends in development (early detection), not transients
• Developed in a joint industry project between 1996 and 1999
• Early users: Shipping, and Troll Kollsnes gas refinery since 2000
9
Proactive Maintenance in Practice: AI Card failure in a Subsea Control Module
1010
101000
10
AI card electrical component failure making all SEM A internal Hydraulic sensors go from valid readings to zero.
AI card electrical component failure making all SEM A internal Hydraulic sensors go from valid readings to zero.
1111
101
11
SEM ASEM A
SEM BSEM B
12
SensorIntegritySensor
Integrity
ValveOperation Log
ValveOperation Log
HydraulicSystem
HydraulicSystem
Electrical & Comm. System
Electrical & Comm. System
Choke Integrity
Choke Integrity
MPFMMPFM
......
Data BaseData Base
Gas Compression
Gas Compression
MP PumpsMP Pumps TCI GeneratorTCI Generator
Information/Knowledge
Server
Information/Knowledge
Server
Subsea DataSubsea Data
People
TechnologyProcesses
Integ
rated
OperationsLife Of Field
CPM added value
• Early detection of failure and degradation– Decreased downtime/increased utilization
– Proactive, condition based maintenance
– Better planning of scheduled maintenance
• Faster turnaround in troubleshooting– Complete historian database
– Tools for collaboration and data sharing
• Address demographics and “brain drain”– Encapsulate expert knowledge in the system
• Improved HSE records– Detect hydrocarbon and chemical leakage
– Safer operations
– Move people from offshore to onshore
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