t +44 (0) 2380 604300w insensys intelligent sensing solutions life of field integrity monitoring...

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

Copyright Insensys Ltd 2006 www.insensys.comAll rights reserved

Proprietary and Confidential Information

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



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



Optical Bragg Grating Technology Platform

Sensors

Information Systems

Optoelectronics

Three key Elements:



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



Flowline Buckle issues

As installed

Operation

Buckled region

Buckle Joint (as Installed)

Operation

Critical Buckle load

Buoyancy



Integrated Riser & Flowline Monitoring System



Riser VIV Monitoring



Riser VIV Monitoring using subCmat

pat pending US & EU 4255194.5



Touchdown Point Monitoring



Axial and curvature measurement

subCcollar

Simple permanent collar attachment

Pre-tested and calibrated assembly

Excellent drift performance



Flow-line Buckle Monitoring



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



Pipeline Monitoring System Typical Hardware

Buoyancy

Buckle Strip

Optoelectronic Instrument

Data Logger

Pressure, Temperature, Axial Load



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

t +44 (0) 2380 604300w insensys intelligent sensing solutions life of field integrity monitoring...

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