Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models
PhD thesis in Petroleum engineering Material fatigue is a failure mode that has been known to researchers and engineers since the 19th century. Catastrophic accidents have happened due to fatigue failures of structures, machinery and transport vehicles. The capsizing of the semisubmersible rig Alexa...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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University of Stavanger, Norway
2012
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Online Access: | http://hdl.handle.net/11250/191246 |
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University of Stavanger: UiS Brage |
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English |
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brønnhode materialtretthet VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512 |
spellingShingle |
brønnhode materialtretthet VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512 Reinås, Lorents Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
topic_facet |
brønnhode materialtretthet VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512 |
description |
PhD thesis in Petroleum engineering Material fatigue is a failure mode that has been known to researchers and engineers since the 19th century. Catastrophic accidents have happened due to fatigue failures of structures, machinery and transport vehicles. The capsizing of the semisubmersible rig Alexander L. Kielland in Norwegians waters in 1980 killed 123 people, and investigations pointed at the fatigue failure of a weld as one of the direct causes. This accident led to a number of improvements to the design of offshore structures. The noticeable safety principle ”No single accident should lead to escalating consequences” has since been adopted in a widespread manner. Since 1992 the Petroleum Safety Authority in Norway has enforced a risk based safety regime. Wells are designed to hold back reservoir pressures and avoid uncontrolled escape of hydrocarbons. In other words a well is a pressure containing vessel. Norwegian safety regulations require a dual barrier construction of wells. This safety principle ensures that one “barrier” is preventing an escalating situation should the other barrier fail. A wellhead is a heavy walled pressure vessel placed at the top of the well. The wellhead is part of the second well barrier envelope during drilling. The subsea wellheads are located at sea bottom and during subsea drilling the Blow Out Preventer (BOP) is placed on top of the subsea wellhead. The drilling riser is the connection between the BOP and the floating drilling unit. Waves and current forces acting on the drilling riser and drilling unit will cause dynamic movement. Flexible joints at top and bottom of the drilling riser protects the drilling riser from localised bending moments. The subsea wellhead is both a pressure vessel and a structurally load bearing component resisting external loads transmitted from a connected riser. These external loads can be static and cyclic combinations of bending and tension (compression). Cyclic loads will cause fatigue damage to the well. The well can take a certain amount ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Reinås, Lorents |
author_facet |
Reinås, Lorents |
author_sort |
Reinås, Lorents |
title |
Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
title_short |
Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
title_full |
Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
title_fullStr |
Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
title_full_unstemmed |
Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models |
title_sort |
wellhead fatigue analysis : surface casing cement boundary condition for subsea wellhead fatigue analytical models |
publisher |
University of Stavanger, Norway |
publishDate |
2012 |
url |
http://hdl.handle.net/11250/191246 |
geographic |
Norway |
geographic_facet |
Norway |
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Arctic |
genre_facet |
Arctic |
op_relation |
163 PhD thesis UiS; Reinås, L. Hørte, T. Sæther, M. Grytøyr, G. (2011): Wellhead fatigue analysis method. Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011. June 19-24, 2011, Rotterdam. Hodne, H. Turkel, M. (2011): Hindered Strength Development in Oil Well Cement due to Low Curing Temperature. SPE 149687. SPE Arctic & Extreme Environments Conference, Moscow, Russia, 2011 Svensson, J. (2012): Wellhead fatigue analysis method : A new boundary condition modelling of lateral cement support in local wellhead models. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Russo, M. Grytøyr, G. (2012): Wellhead fatigue analysis method : The effect of variation of lower boundary conditions in global riser load analysis. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Aadnøy, B. (2012): The Effect of a fatigue failure on the wellhead ultimate load capacity. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Mathiesen, J. (2012): Wellhead fatigue analysis method : Benefits of a structural reliability analysis approach. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Holden, H. (2012): Fatigue assessment of subsea wells for future and historical operations based on measured riser loads. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Wellhead fatigue analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models by Lorents Reinås, Stavanger : University of Stavanger, 2012 (PhD thesis UiS, no. 163) urn:isbn:978-82-7644-493-3 urn:issn:1890-1387 http://hdl.handle.net/11250/191246 |
op_rights |
Copyright the author, all right reserved Attribution 3.0 Norway http://creativecommons.org/licenses/by/3.0/no/ |
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ftunivstavanger:oai:uis.brage.unit.no:11250/191246 2023-06-11T04:07:29+02:00 Wellhead Fatigue Analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models Reinås, Lorents 2012-05-31 application/pdf http://hdl.handle.net/11250/191246 eng eng University of Stavanger, Norway 163 PhD thesis UiS; Reinås, L. Hørte, T. Sæther, M. Grytøyr, G. (2011): Wellhead fatigue analysis method. Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011. June 19-24, 2011, Rotterdam. Hodne, H. Turkel, M. (2011): Hindered Strength Development in Oil Well Cement due to Low Curing Temperature. SPE 149687. SPE Arctic & Extreme Environments Conference, Moscow, Russia, 2011 Svensson, J. (2012): Wellhead fatigue analysis method : A new boundary condition modelling of lateral cement support in local wellhead models. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Russo, M. Grytøyr, G. (2012): Wellhead fatigue analysis method : The effect of variation of lower boundary conditions in global riser load analysis. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Aadnøy, B. (2012): The Effect of a fatigue failure on the wellhead ultimate load capacity. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Mathiesen, J. (2012): Wellhead fatigue analysis method : Benefits of a structural reliability analysis approach. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Holden, H. (2012): Fatigue assessment of subsea wells for future and historical operations based on measured riser loads. Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2012 June 10-15, 2012, Rio de Janeiro Wellhead fatigue analysis : Surface casing cement boundary condition for subsea wellhead fatigue analytical models by Lorents Reinås, Stavanger : University of Stavanger, 2012 (PhD thesis UiS, no. 163) urn:isbn:978-82-7644-493-3 urn:issn:1890-1387 http://hdl.handle.net/11250/191246 Copyright the author, all right reserved Attribution 3.0 Norway http://creativecommons.org/licenses/by/3.0/no/ brønnhode materialtretthet VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510::Petroleumsteknologi: 512 VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512 Doctoral thesis 2012 ftunivstavanger 2023-05-29T16:01:59Z PhD thesis in Petroleum engineering Material fatigue is a failure mode that has been known to researchers and engineers since the 19th century. Catastrophic accidents have happened due to fatigue failures of structures, machinery and transport vehicles. The capsizing of the semisubmersible rig Alexander L. Kielland in Norwegians waters in 1980 killed 123 people, and investigations pointed at the fatigue failure of a weld as one of the direct causes. This accident led to a number of improvements to the design of offshore structures. The noticeable safety principle ”No single accident should lead to escalating consequences” has since been adopted in a widespread manner. Since 1992 the Petroleum Safety Authority in Norway has enforced a risk based safety regime. Wells are designed to hold back reservoir pressures and avoid uncontrolled escape of hydrocarbons. In other words a well is a pressure containing vessel. Norwegian safety regulations require a dual barrier construction of wells. This safety principle ensures that one “barrier” is preventing an escalating situation should the other barrier fail. A wellhead is a heavy walled pressure vessel placed at the top of the well. The wellhead is part of the second well barrier envelope during drilling. The subsea wellheads are located at sea bottom and during subsea drilling the Blow Out Preventer (BOP) is placed on top of the subsea wellhead. The drilling riser is the connection between the BOP and the floating drilling unit. Waves and current forces acting on the drilling riser and drilling unit will cause dynamic movement. Flexible joints at top and bottom of the drilling riser protects the drilling riser from localised bending moments. The subsea wellhead is both a pressure vessel and a structurally load bearing component resisting external loads transmitted from a connected riser. These external loads can be static and cyclic combinations of bending and tension (compression). Cyclic loads will cause fatigue damage to the well. The well can take a certain amount ... Doctoral or Postdoctoral Thesis Arctic University of Stavanger: UiS Brage Norway |