General Pulse Structural Monitoring


Published on

understanding your subsea structures...

1 Comment
No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide
  • The INTEGRI line of products that has been especially developed by 2H for Subsea Integrity Monitoring
  • General Pulse Structural Monitoring

    1. 1. Pulse Structural Monitoring Hisham Sheriteh
    2. 2. 19 Companies 500$Mill Revenue 1400 People
    3. 3. What We Do ? <ul><li>Design, supply, install and manage monitoring systems to measure motion and strain of structures subsea </li></ul><ul><li>to deliver understanding, confidence and improved operational efficiency of structural assets </li></ul>
    4. 4. PULSE Services Structural Data Delivery Services Design and Supply Monitoring Systems Data Processing & Management Offshore Installation and support
    5. 5. PULSE Services Cycle Complete Service Client Requirement Monitoring system design Instrument supply Installation and Commission Report Data Processing management
    6. 6. Pulse Offices Project Locations
    7. 7. Structures Monitored Marine drilling risers Completion risers Steel catenary risers Top-tensioned risers Flexible risers Blow-out preventer stacks Conductors Chain stopper Stress joints Tethers Off-take lines Templates Flex-joints Pipelines spans Pipelines during lay Mooring cables Pipeline hold-back tethers Jacket platform Handling equipment Vessel structures
    8. 8. <ul><li>SCRs </li></ul><ul><ul><li>Agip Allegheny, 600m, GoM </li></ul></ul><ul><ul><li>BP Horn Mountain, 1300m, GoM (realtime) </li></ul></ul><ul><ul><li>Chevron Tahiti, 1300m, GoM (realtime) </li></ul></ul><ul><li>Drilling and Completion Risers </li></ul><ul><ul><li>Thunder Horse Drilling Riser and CWOR, 2000m, GoM (standalone and realtime) </li></ul></ul><ul><ul><li>BP Rebecca and Reki, 1000m, Brazil </li></ul></ul><ul><ul><li>BP Schiehallion, 360m, WoS </li></ul></ul><ul><ul><li>BP Svinoy and Assynt, 1000m, Faroes </li></ul></ul><ul><ul><li>BP Algodaol Drilling riser, 770m, Brazil </li></ul></ul><ul><ul><li>BP Sakhalin Drilling Riser </li></ul></ul><ul><ul><li>TFE Donggalla, 1800m, Indonesia </li></ul></ul>Track Record Highlights for Riser Monitoring
    9. 9. Experience Statement Subsea monitoring experience: Monitoring projects: INTEGRIpod supplied: Subsea deployments: Depth of deployment: > 12 years > 200 > 350 > 500 > 6000ft
    10. 10. Tahiti SCR Monitoring System <ul><li>Tailored engineering solution </li></ul><ul><li>System integrator </li></ul><ul><li>Maximize existing technology </li></ul><ul><li>15 sensor stations </li></ul><ul><li>Over 50 sensors utilized </li></ul><ul><li>Industrial communication bus </li></ul><ul><li>Tailored user software </li></ul>Hang-off jumper Hull umbilical Soft tank UTA Hang-off UTA Hang-off Sensor stations TDP Sensor stations Segmented umbilical Extended flying lead TDP UTA Flowline UTA Buckle Strips
    11. 11. Tahiti SCR Instrumentation Tailored Engineering
    12. 12. Instrumentation Systems
    13. 13. Standard Components Subsea Data Loggers Subsea Sensors Mechanical Interfaces Software packages Standard, modular, proven, cost effective and fast delivery
    14. 14. Subsea Data Loggers
    15. 15. M Motion Acceleration Angular rate Inclination Orientation Displacement F Force Strain Curvature Tension E Environmental Depth Pressure Temperature Gas Sound S (Standalone) A (Acoustic) H (Hardwired) Data collection architecture Measurements with various sensors Subsea Data Loggers
    16. 16. Family MOTION <ul><li>Measures: </li></ul><ul><li>Tri axial acceleration </li></ul><ul><li>Tri plane angular rate </li></ul><ul><li>Bi-plane inclination </li></ul><ul><li>Derived parameters: </li></ul><ul><li>Linear displacement </li></ul><ul><li>Acceleration due to motion </li></ul><ul><li>Average inclination </li></ul><ul><li>Harmonics </li></ul>INTEGRI pod™ -SM INTEGRI pod™ -SM+ INTEGRI pod™ -AM Standalone + Motion (standard motion sensor) Standalone + Motion (high-grade motion sensor) Acoustic + Motion (optional motion sensor) INTEGRI pod™ -HM Hardwired + Motion (optional motion sensor)
    17. 17. High Freq Vibration Monitoring System Spider Sensor Cable Logger
    18. 18. Subsea Data Loggers Software
    19. 19. Mechanical Interface
    20. 20. Subsea Sensors
    21. 21. Underwater Strain Gauges Sensors <ul><li>Foil-type industry accepted electrical strain gauges+ Packaged in PULSE proprietary sealing and protection system </li></ul><ul><li>PU Encapsulate strain gauges </li></ul><ul><li>Triple-layer water sealing layers </li></ul><ul><li>Fiber-glass molded shell </li></ul><ul><li>Mechanical protection </li></ul><ul><li>Protected cable routing </li></ul><ul><li>Qualified procedures </li></ul>
    22. 22. Subsea Strain Gauge Installation On K joint On straight pipe (0.6 m OD) Structural strain monitoring On K joint
    23. 23. Fibre-Optical Strain Sensors <ul><li>Use proven specialist in optical strain gauges </li></ul><ul><li>Utilize existing strain gauging expertise </li></ul><ul><li>Intrinsically safe </li></ul><ul><li>The solution for tankers, FPSOs, etc </li></ul>
    24. 24. Subsea Dynamic Curvature Sensor The “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 To data logger
    25. 25. Subsea Dynamic Curvature Sensor
    26. 26. Subsea Strain Sensor Upper collar Lower collar (0.6 meter apart) 4 Sensors (3 redundant systems) Structural pipe Sensor body Piston Oil-filled Output to INTEGRIpod <ul><ul><li>Resolution in tension measurement: 2 tonne or better </li></ul></ul>
    27. 27. Sensor Module <ul><li>Proven displacement sensor </li></ul><ul><li>Sensor moulded in an anti-corrosion alloy plug </li></ul><ul><li>Small force to operate </li></ul><ul><li>Can be packaged differently to suit different applications </li></ul>
    28. 28. ROV/Diver Deployable Strain Sensors Sensor Module Pad #1 Pad #2 Pad #1 Pad #2 Magnetic pads Magnetic pads Joining steel brace Connection to Data logger
    29. 29. Diver Deployable Strain Sensors Integripads connected to data logger Up to 4 Integripads per data logger
    30. 30. Mooring Chain Tension Sensor
    31. 31. Monitoring Systems
    32. 32. <ul><li>Pick & Mix components into a system with minimum functionality for monitoirng a specific subsea structure </li></ul><ul><li>Benefit </li></ul><ul><ul><li>Standard and modular components </li></ul></ul><ul><ul><li>Proven technology </li></ul></ul><ul><ul><li>Cost effective </li></ul></ul><ul><ul><li>Fast delivery </li></ul></ul>Monitoring Systems
    33. 33. Offshore Structures Motion Position Force
    34. 34. System overview
    35. 35. Mooring Line Monitoring System
    36. 36. SLOR Air Can Tension Monitor
    37. 37. For more Information please contact: Hisham Sheriteh Sales Engineer D: +44 (0)1483 774958 M: +44 (0)7979 645402
    38. 38. Flexible risers monitoring
    39. 39. Contents <ul><li>Unbonded Flexible Pipe Overview </li></ul><ul><li>Why monitor? </li></ul><ul><li>Monitoring Approach </li></ul><ul><li>Testing </li></ul><ul><li>Benefits </li></ul>
    40. 40. Unbonded flexible pipe overview <ul><li>Successful armor wire rupture test conduct at Submarine Technology Lab (LTS) at Federal University of Rio de Janeiro (UFRJ) </li></ul><ul><li>A 4.3m section of flexible pipe is tensioned within a steel structure using hydraulic actuators. A total of 30wires are broken, both on the external and internal layers </li></ul>
    41. 41. Unbonded flexible pipe overview <ul><li>Carcass (Stainless / Duplex Steel) </li></ul><ul><ul><li>External Pressure Resistance </li></ul></ul><ul><li>Inner Sheath (Polymer) </li></ul><ul><ul><li>Internal Fluid Containment </li></ul></ul><ul><li>Pressure Armor (Carbon Steel) </li></ul><ul><ul><li>Hoop and Radial Load Resistance </li></ul></ul><ul><li>Tensile Armor (Carbon Steel) </li></ul><ul><ul><li>Axial Load and Torsion Resistance </li></ul></ul><ul><li>Outer Sheath (Polymer) </li></ul><ul><ul><li>External Fluid Barrier </li></ul></ul><ul><li>Not Shown: </li></ul><ul><li>Anti-wear Layer (Polymer) </li></ul><ul><li>Insulation Layer </li></ul>
    42. 42. Flexible riser failure modes <ul><li>Accessory failure  e.g. bending stiffener </li></ul><ul><li>Corrosion  outer sleeve puncture  interference </li></ul><ul><li>Fatigue  initial defect for crack propagation (knife) </li></ul><ul><li>Fatigue  cyclic bending  vibration  vortex shedding </li></ul>
    43. 43. Why monitor? <ul><li>External sheath damage </li></ul><ul><ul><li>Contact with platform brace </li></ul></ul><ul><ul><li>Bend stiffener contact with I-tube </li></ul></ul><ul><ul><li>Localized compression in the bellmouth </li></ul></ul><ul><ul><li>Sharp corners inside bellmouth helmet </li></ul></ul><ul><li>Armor wire rupture </li></ul><ul><ul><li>Fatigue at the I-tube </li></ul></ul><ul><ul><li>Corrosion followed by external sheath damage </li></ul></ul><ul><li>Uncertainties </li></ul><ul><li>Risk to equipment </li></ul><ul><li>Operating envelopes </li></ul>
    44. 44. Where it is likely to fail? <ul><li>Top of riser: </li></ul><ul><li>Highest static and dynamic loads </li></ul><ul><li>Highest dynamic effects: fatigue </li></ul><ul><li>Highest design uncertainty </li></ul><ul><li>Most common failure region is at the top of the riser </li></ul>
    45. 45. Monitoring locations
    46. 46. Where to monitor?
    47. 47. Monitoring locations
    48. 48. <ul><li>Based on Pulse’s field-proven product range </li></ul><ul><li>Over 12+ years of riser monitoring experience </li></ul><ul><li>Monitors failure modes near the fatigue critical riser/platform interface </li></ul><ul><li>Online System </li></ul><ul><li>Simple installation </li></ul><ul><li>Non intrusive </li></ul>Monitoring approach
    49. 49. <ul><li>Engineering </li></ul><ul><ul><li>Deployment design </li></ul></ul><ul><ul><li>Response assessment and placement study </li></ul></ul><ul><li>Hardware Supply </li></ul><ul><li>Installation </li></ul><ul><li>Data processing and reporting </li></ul>Typical scope
    50. 50. System overview - communications
    51. 51. Components of <ul><li>Pulse’s system integrates 4 separate subsystems to inspect the integrity of the flexible riser: </li></ul><ul><ul><li>INTEGRIpod-M near the connector and at the exit of I-tube </li></ul></ul><ul><ul><li>Gas detection sensor near the connector </li></ul></ul><ul><ul><li>Pressure sensor near the connector </li></ul></ul><ul><ul><li>Topside data acquisition System </li></ul></ul>
    52. 52. Benefits of <ul><ul><li>Armour wire failure detection </li></ul></ul><ul><ul><li>Annulus pressure monitoring </li></ul></ul><ul><ul><li>Gas leakage into pull tube detection monitoring </li></ul></ul><ul><ul><li>Hang-off motion monitoring </li></ul></ul><ul><ul><li>Hang-off angle monitoring </li></ul></ul><ul><ul><li>Strain Monitoring </li></ul></ul><ul><ul><li>VIV monitoring </li></ul></ul><ul><ul><li>Top tension monitoring </li></ul></ul><ul><ul><li>Differential angle across bend stiffener monitoring </li></ul></ul><ul><ul><li>Vessel and riser hang off position (GPS) monitoring </li></ul></ul>
    53. 53. Principle <ul><li>Continuous riser inclination and motion monitoring </li></ul><ul><li>Sound emission, axial movement and transit twist during rupture </li></ul><ul><li>Annulus pressure and gas content (Optional) </li></ul>Riser
    54. 54. Testing
    55. 55. Wire cutting region Microphone Conector Monitoring System Compass + Inclinometers Axial Accelerometer Angular Rate x 2
    56. 56. Control Panel Riser
    57. 57. Sequence of wire break under tension
    58. 58. Results Signal with peak / without peak
    59. 60. Preliminary Offshore Test <ul><li>Prototype system supplied by 2H is installed on a platform for 4 days below the bend stiffener </li></ul><ul><li>Data from sensors are logged into a computer continuously </li></ul><ul><li>Data logged are compared with the Lab test data (wire break data) </li></ul>
    60. 61. Results <ul><li>Offshore Test VS. Lab Wire Break Test </li></ul><ul><li>Microphone </li></ul>
    61. 62. Results <ul><li>P19 Offshore Test VS. Lab Wire Break Test </li></ul><ul><li>Axial accelerometer </li></ul>
    62. 63. Results <ul><li>P19 Offshore Test VS. Lab Wire Break Test </li></ul><ul><li>Angular rate sensor </li></ul>
    63. 64. Conclusions
    64. 65. Test Conclusions <ul><li>Sensors in the Pulse flexible riser monitoring system detected wire failures for all 30 wire breakages, regardless of riser tension applied. </li></ul><ul><li>Rotations in both the clockwise and anticlockwise directions are detected </li></ul><ul><li>Clearly detectable peaks in the logged signal are detected by 4 of the sensors, during wire breakage. These peaks are easily identifiable even above the noise due to hammer tests to determine changes in the acoustic properties of the riser. </li></ul>