T +44 (0) 2380 604300 W www.insensys.com
T +44 (0) 2380 604300 W www.insensys.com
insensysIntelligent Sensing Solutions
LIFE OF FIELD INTEGRITY MONITORING
FOR SUBSEA ASSETS
Lenny Sutherland
Director, Oil & Gas
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Company formed in Southampton in 2002 Acquired Indigo Photonics June 2003
Large fiber sensing patent portfolio Optical sensor manufacture capability
First Oil & Gas project awarded by BP in 2003 Aberdeen and Houston offices opened in 2005 Core Competences
Monitoring system design and manufacture Requirements analysis Data interpretation
Insensys Introduction
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Oil & Gas Business Areas
VIV, riser bend, axial strain & fatigue
Riser & mooring line tension
Buckle monitoring
Small bore pipe vibration fatigue
Flexible jumper fatigue
Flex joint loading
Flowline pressure, axial strain & temperature
Bend restrictor monitoring
SCR touch down monitoring
Pipeline free-span fatigue
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Optical Bragg Grating Technology Platform
Sensors
Information Systems
Optoelectronics
Three key Elements:
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Riser Management Issues
Near Offset
Far Offset
Nominal
TDP Movement
Near Offset
Far Offset
Nominal
TDP Movement
Near Offset
Far Offset
Nominal
TDP Movement
VIV Current data Riser VIV response
Wave/ Vessel motions Environmental data Vessel motions Riser characteristics
TDP movement Vessel offsets Riser characteristics
Wave
Current
WaveWave
Current
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Flowline Buckle issues
As installed
Operation
Buckled region
Buckle Joint (as Installed)
Operation
Critical Buckle load
Buoyancy
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Integrated Riser & Flowline Monitoring System
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Riser VIV Monitoring
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Riser VIV Monitoring using subCmat
pat pending US & EU 4255194.5
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Touchdown Point Monitoring
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Axial and curvature measurement
subCcollar
Simple permanent collar attachment
Pre-tested and calibrated assembly
Excellent drift performance
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Flow-line Buckle Monitoring
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Flow-line Buckle Monitoring
~ 10 ftApex location range
Buoyancy200 ft
Buckle StripMonitoring Device
Amplitude ~10 ft
Buoyancy200 ft
Mode 2 Wavelength ~ 560 ft
End Disturbance ~ 60 ft
Amplitude~ 2 in
Critical Parameters
Thermal strain Axial load Installation loads Pressure Friction resistance
Buckle characterization Nonlinear, ill conditioned
problem Load uncertainties Complicated buckle modes History dependent
phenomena
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Pipeline Monitoring System Typical Hardware
Buoyancy
Buckle Strip
Optoelectronic Instrument
Data Logger
Pressure, Temperature, Axial Load
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Summary
Integrity issues driving technology uptake
Technology is now proven & available
Simplified life-of-field & ROV deployment
Direct measurement capability
Simple & efficient data interpretation
Positive track record in deep water
Please visit us on stand 49 in the Exhibition Area