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Introduction of Pulse
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Introduction of Pulse Wilson Foo
Contents
What do we monitor and why?
ASSSURETM
range of systemsDrilling Riser Monitoring
Production Riser Monitoring
Marine Systems
Subsea Infrastructure
IntegriTM
range of sensors
Pulse/Acteon overview
2
What do we monitor and why?
Pulse Mission Statement
•
To enable our clients to operate safely and efficiently through monitoring
What and where does Pulse monitor?
Flexible risers
Free‐standing risers
Drilling risers
Steel catenary
risers
Pipelines
Top‐tensioned risers
Mooring lines
Offshore wind farms
Vessels / platformsTidal generators
Examples of client issues
What is the fatigue damage of seabed pipeline
spans due to vibration?
What is the drilling
riser fatigue damage due to vortex‐ induced‐vibration?
Are my FPSO’s
mooring lines all intact?
What is the buoyancy tank behavior during hurricane/ cyclone/ typhoon?
….
Why do we monitor
Despite greater understanding and advanced engineering & analytical tools
Still unknownsInspection can be difficult/expensive
Increased emphasis on Safety Integrity managementRegulatory requirement
Deeper water means greater challengesMonitoring should be part of proactive IMR (Inspection,
Maintenance & Repair) programme
+31 6 20248812
Over‐rotation of Flexjoint
VIV conductor movement
Riser failure in 6,000ft water depth
Monitoring Systems
Market Segment Overview
Drilling Riser MonitoringDrillASSURE
Production Riser MonitoringFlexASSURESLORASSURESCRASSURE
Marine SystemsMarineASSUREMoorASSURETendonASSURE
Subsea Infrastructure SpanASSUREJumperASSURERenewables
What is DrillASSURE?
Drilling Riser Integrity Management System to aid:Planning drilling operations
Monitoring drilling operations
Monitoring completion/workover/well intervention
Minimise disruptions to drilling operations, maximise operational time, reduce costs & increase safety
Overview of the DRILLASSURE systemFull system integration with
real time software
Alarm Functionality
DrillASSURE reduces complex operating environment to 3 level alarm system
All parameters within normal operating limits
1 parameter outside normal
operating limits
1 parameter outside ultimate
operating limits
Optimise JudgementAction Required
RecommendedDisconnect
GREEN YELLOW REDSTATUS
SITUATION
ACTION
Operating Envelope Definition
0.0
0.2
0.4
0.6
0.8
1.0
1.2
-20 -15 -10 -5 0 5 10 15Vessel Offset (% of water depth)
Surf
ace
Cur
ren
t V
eloc
ity
(m/s
)
Pulse works with operators to define operating envelopes
Pulse/2H algorithms based on 15 years of experience with drilling analysis
Why Monitoring for Flexibles?
Flexible risers are a complex construction Multiple failure modes
Limited operating history in comparison with rigid pipeFlexibles are deemed non‐inspectable
Design life 10 times safety factorIf deemed inspectable
reduces to 3 times
Monitoring is a key component of flexible riser integrity management
System Description
Philosophy for FlexASSURE designDesigned & qualified in conjunction with
operator and flexible manufacturer to monitor top section of riser
>90% of incidents occur in top sectionReal need for operator to understand
Large number of flexibles on critical listBreach in outersheath
can lead to corrosion issues
No effective system for monitoring wire breaks at present
Current wire break detection systems are visual inspection methods
Need increasing as water depths are deeperEnd fitting more complexHigher tension
Principle of measurement
Sound emissionTransient axial movement
Transient twistResultant rotation
Riser
Retrofit system ‐
Easy to installTop side or subsea
Simple to operateSimple GUI with alarm based system – easy to interpret
Robust measurement No false alarms
Reliable Based on Pulse standard modular components > 10 years experience
Dynamic Fatigue Test – Selected Results
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0 1 2 3 4 5 6 7 8Event Number
Num
ber a
bove Thresho
ld Level
Sensor 1 Sensor 2 Sensor 3 Sensor 4 Sensor 5
Peaks in only 3 sensors:Caused by the test inertia (End of Load Case)
Peaks in only 1 sensors:Caused by the test inertia (Begin of Load Case)
Peaks in all 5 sensors:Wire Break
Peaks in all 5 sensors:Wire Break
Peaks in all 5 sensors:Wire Break
Peaks in all 5 sensors:Wire Break
Peaks in only 3 sensors:
WIRE BREAK
WIRE BREAK
WIRE BREAK
WIRE BREAK
Only 3 sensors no break
Only 1 sensors no break
Only 1 sensors no break
3 year qualification: 17 wire breaks detected – NO FALSE ALARMS
Tahiti SCR instrumentation
TDZ RegionStrain + Motion + Shape
SCR fatigue
TDZ RegionStrain + Motion + Shape
SCR fatigue
Hang-off RegionStrain + Motion + Shape
VIV, Fatigue
Hang-off RegionStrain + Motion + Shape
VIV, Fatigue
24
Tahiti SCR instrumentation
25
Discrete Monitoring Location
Non Intrusive ‐
Motion ‐
StrainHardwired into Topside DAQ
Tahiti SCR Instrumentation
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Tahiti SCR Monitoring Goals Achieved
Goals Achieved 2009System operational since beginning of 2009
Compare Measured riser performance against design assumptions
Identify and monitor riser loads during extreme events ‐
Hurricane Ida
Measured riser response correlates with wave activity
Torsional
rotation measured on TDZ confirmed with ROV‐Footage
Track accumulated riser fatigue damage at critical location
Customer Goals for 2010
Calibrate soil stiffness model
Identify trenching and corresponding riser loads for extreme events.
Tahiti SCR instrumentation Data Analysis – TDP Dynamic Riser Stress
28
Hurricane IDA ‐
VIM – stress in TDP
Strain Sensor 15
TTMS – On shore installationTop Tension Monitoring System
Displacement Sensor
Bolt on collar Protective cage
TTMS‐GOM installation
Containment Riser Tension Monitoring
Production
Start
Aircan
installatio
n
TS Bonnie‐
Vessel Demob
Production
Stop
Tension loss
Aircan
leak
Aircan
fill
Riser Flush
SLOR Screenshots
Marine Vessel and Environmental Monitoring
Monitoring Systems OverviewADCP current speed and directionWave radar air gapLocation (CGPS)6‐DOF motionEnvironmental monitoringHull MonitoringBallast tank monitoringTendon tension load monitoringDrilling advisorySubsea monitoring system
35
Monitoring Systems Overview
36
System
Bus
Data AcquisitionSoftware System
Integrated Sensor Units
ADCP Monitoring System
37
Real‐time and self‐contained data Measurement
Top 1000m Bottom 400‐600mSurface currents and waves
Scope of supply38kHz Ocean Observer ADCP300kHz Horizontal ADCP w/ waves75kHz Long Ranger ADCPSeabed deployment frame
Marine ASSURE screenshot
Mooring line monitoring system Fatigue/lifetime based on tensionAlarm if break in mooring line
Two methods for monitoring tension in mooring lines
1.
Measure top angle
of mooring lines2.
Direct tension measurementa)
IntegriCuff
b)
Inter‐M‐Pulse connector
Overview
Measurement of Top Angle
Measure top angle
of mooring linesAngles are converted into tension using equationsRetrofit installation by divers or ROVs
20 min logging /6 hours logging every day1 data upload acoustically every day5 years operation with one battery loading
Top Angle Measurement
Software Window
Mooring Dynamic Chain Tension Sensor
Inter‐M‐Pulse swivel
Industry first: Intelligent in‐line mooring component
Joint development between Intermoor & Pulse
2011 Business Plan and Budget Presentation
Subsea Infrastructure ‐
What we monitor
Wide range of structures monitored according to customers needs.
Can be installed before during or after installationPlatform jacketsJumpersBlow‐out preventer stacksStress jointsTethersOff‐take linesTemplatesPipelines spans Pipelines during layPipeline tethersHandling equipment…………..
Jumper Monitoring
Flow Induced Vibration in subsea pipe work is detected
Concern: accelerated fatigue damage in stress critical locations
Pulse confirms initial concern of vibrations in pipe work
Flow rates are decreased (25%) to avoid FIV
Flowline Motion Monitoring System
Shackle Load Cell Monitor System
ROV retrievable data logger
Shackle load cells
Data logger holder
Product Range & Case Studies
Integri Range of Sensors & Interfaces
Full Range of Monitoring and Communication Methods
All sensors off the shelf and modular
Tailor to customer specification
MMotion
AccelerationAngular rateInclinationOrientationDisplacement
FForceStrain
CurvatureTension
EEnvironmental
DepthPressure
TemperatureGas
Sound
S(Standalone)
A(Acoustic)
H(Hardwired)
Data collectionarchitecture
Measurementswith various
sensors
Subsea Data Loggers
Subsea Strain Sensor
Upper flange
Lower flange, (0.6 meter apart)
4 Sensors
Stress joint (12 inch OD and 20 mm WT)
Resolution in tension measurement: 2 tonne or better
Subsea Dynamic Curvature SensorThe “Stick”
0.5m long pressure balanced, 3000 meter rated
Easy-to-bend
Strapped to any structure externally
with or without coating with minimum
preparation and effort Strapped to a structure
Diver/ROV Deployable Strain Sensors
Mechanical Interface
A‐
Diver deployable
on chains
D ‐
ROV deployable
on structures
E ‐
ROV deployable
on pipelines/risers
F ‐
Diver deployable
on risers
B ‐
Diver deployable
on risers
C ‐
ROV deployable on
structures
Underwater Strain Gauges Sensors
Foil‐type strain gauges + Packaged in PULSE proprietary sealing and protection system
Multi layer packaging to prevent water ingress
PU EncapsulationWater sealing layersFiber‐glass molded shell
Electrical or Fibre‐optical strain gaugesFully qualified procedures & track record
Subsea Strain Gauge Installation
On straight pipe (0.6 m OD)
Structural strain monitoring On K joint
Pulse Company History
Company Today
59
Divison of 2H
Company Future ‐
2011
60
OpCo of Acteon
Acteon Service Companies
Acteon Group is an international service provider to the offshore oil & gas industry. The group comprises 18 leading companies
specializing in three main areas...
Marine Electronic & Instrumentation
Riser, Conductor and Flowlines
Foundation and Moorings
The history of Pulse
Track record
Pulse Services
Structural Data Delivery Services
Award Winning Technology
65
Pulse Conclusion
Customer oriented service provider
Key focus ‐
Structural monitoring
Meet or exceed Client expectation
Fully committed to subsea market needs
Pulse INTEGRI and ASSURE logos
