Download - Subsea Dropped Object Analysis - DROPSOnline
![Page 1: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/1.jpg)
energy engineering
Subsea Dropped Object Analysis
![Page 2: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/2.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 2
Content
• Company Background • Subsea Dropped Objects • Current Mitigation Techniques • Subsea Installation Analysis • Finite Element Analysis (FEA) • Computational Fluid Dynamics (CFD) • Case Studies • Questions
![Page 3: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/3.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 3
Company Background
• Founded 1999 – Became part of Superior group Dec 2009
• Multidiscipline services – Design – Analysis – Management
• International Resources – Aberdeen, Derby, Houston, Singapore
• Client Orientated – Focus purely on client needs to provide a fast effective service of
the highest quality
![Page 4: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/4.jpg)
Subsea Dropped Objects
![Page 5: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/5.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 5
Subsea Asset Protection
• Modern Oilfield – Large subsea infrastructure
• Congested seabed – High Risk of dropped objects impacting and damaging assets
![Page 6: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/6.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 6
Current Mitigation Techniques
• DROPS potential consequence table – Lookup table for range of objects with potential to be dropped – Gives approximate drop cone, velocity and impact
• Recommended Practice – DNV-RP-F107 2010 – Probability based quantification of events – Drag coefficients and terminal velocity highly generalised based on
shape
• Explicit Analysis – Use of latest software and analysis techniques – Fully quantify numerical values and potential consequences
![Page 7: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/7.jpg)
Prospect Dropped Object Analysis
![Page 8: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/8.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 8
Prospect Drop Analysis Tools
Prospect can provide; • Real world behaviour
– Physics based simulations which replicate real events
• Numbers behind the risks – Mitigation methods can be tested and compared
• Worst case scenarios – Outcomes if the worst does happen
• Front end engineering – Prevent incidents rather than react
![Page 9: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/9.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 9
Subsea Installation Analysis
• Simulate an asset during move from vessel to subsea location – Pipe Lay – Cable Lay – Subsea Hardware – Splash Zone Deployment
![Page 10: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/10.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 10
Finite Element Analysis (FEA)
• Computer modelling of component stress and deflection • Dropped object impact
– Forces on impact – Visualise outcomes – Quantify events
![Page 11: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/11.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 11
Computational Fluid Dynamics (CFD)
• Computer modelling of fluid dynamics and subsequent loading – Determine where a dropped object is likely to land – “Virtual Wind Tunnel” for sea currents – Displacement forces – Objects drag coefficient – Determine an objects likely impact velocity
![Page 12: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/12.jpg)
Case Studies
![Page 13: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/13.jpg)
QMF 21 Rev 3
Dropped Object - Installation
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 13
![Page 14: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/14.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 14
Flexible Riser Impact (FEA)
![Page 15: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/15.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 15
Subsea Manifold Impact (FEA)
![Page 16: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/16.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 16
Subsea Manifold Impact (FEA)
![Page 17: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/17.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 17
Subsea Manifold Impact (FEA)
![Page 18: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/18.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 18
Questions
? ?
? ? ?
?
?
![Page 19: Subsea Dropped Object Analysis - DROPSOnline](https://reader031.vdocument.in/reader031/viewer/2022012012/61582e1be3577f2b256203e4/html5/thumbnails/19.jpg)
QMF 21 Rev 3
23 Aug 2012 Prospect and Subsea Dropped Object Analysis 19
Contact
John Eddie Prospect Cumberland House Endeavour Drive Westhill Aberdeenshire AB32 6UF T: +44 1224 651831 www.prospect-fs.com