On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay
Installing spudcans for jack-up rigs in a layered seabed with an interbedded strong-over-soft layer is challenging in the offshore industry due to possible punch-through failure. The methods currently used to predict punch-through failure mainly focus on generic spudcans, usually ignoring the geomet...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/10/11/1607 |
| _version_ | 1797467718194036736 |
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| author | Jun Zhao Yang Zhang Luyu Liu |
| author_facet | Jun Zhao Yang Zhang Luyu Liu |
| author_sort | Jun Zhao |
| collection | DOAJ |
| description | Installing spudcans for jack-up rigs in a layered seabed with an interbedded strong-over-soft layer is challenging in the offshore industry due to possible punch-through failure. The methods currently used to predict punch-through failure mainly focus on generic spudcans, usually ignoring the geometric features of the spudcan. The aim of this study is to determine whether the punch-through potential of a generic spudcan is applicable to a cubic spudcan of a BH12# jack-up rig installed in dense sand overlying non-uniform clay. We conducted a series of large deformation finite element (LDFE) analyses on dense sand overlying non-uniform clay using a generic spudcan and a cubic spudcan. The thickness of the sand layer was also varied to cover a range of practical interest. The special cubic spudcan was found to be less likely to induce punch-through failure on sand-over-clay sediments compared with the corresponding generic spudcan. Herein, we propose a method to predict the degree of post-peak bearing reduction, which is a key measure of the severity of punch-through failure. |
| first_indexed | 2024-03-09T18:56:44Z |
| format | Article |
| id | doaj.art-749f365eb7c24e23993303cc809c3f61 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T18:56:44Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-749f365eb7c24e23993303cc809c3f612023-11-24T05:21:40ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-10-011011160710.3390/jmse10111607On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform ClayJun Zhao0Yang Zhang1Luyu Liu2Department of Offshore Oil and Gas Engineering, College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaDepartment of Naval Architecture and Ocean Engineering, Ulsan Ship and Ocean College, Ludong University, Yantai 264000, ChinaYantai CIMC Blue Ocean Technology Co., Ltd., Yantai 264000, ChinaInstalling spudcans for jack-up rigs in a layered seabed with an interbedded strong-over-soft layer is challenging in the offshore industry due to possible punch-through failure. The methods currently used to predict punch-through failure mainly focus on generic spudcans, usually ignoring the geometric features of the spudcan. The aim of this study is to determine whether the punch-through potential of a generic spudcan is applicable to a cubic spudcan of a BH12# jack-up rig installed in dense sand overlying non-uniform clay. We conducted a series of large deformation finite element (LDFE) analyses on dense sand overlying non-uniform clay using a generic spudcan and a cubic spudcan. The thickness of the sand layer was also varied to cover a range of practical interest. The special cubic spudcan was found to be less likely to induce punch-through failure on sand-over-clay sediments compared with the corresponding generic spudcan. Herein, we propose a method to predict the degree of post-peak bearing reduction, which is a key measure of the severity of punch-through failure.https://www.mdpi.com/2077-1312/10/11/1607jack-up rigcubic spudcanpunch-through failuredense sand overlying non-uniform claycoupled Eulerian–Lagrangian |
| spellingShingle | Jun Zhao Yang Zhang Luyu Liu On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay Journal of Marine Science and Engineering jack-up rig cubic spudcan punch-through failure dense sand overlying non-uniform clay coupled Eulerian–Lagrangian |
| title | On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay |
| title_full | On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay |
| title_fullStr | On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay |
| title_full_unstemmed | On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay |
| title_short | On Cubic Spudcan Deep Penetration in Dense Sand Overlying Non-Uniform Clay |
| title_sort | on cubic spudcan deep penetration in dense sand overlying non uniform clay |
| topic | jack-up rig cubic spudcan punch-through failure dense sand overlying non-uniform clay coupled Eulerian–Lagrangian |
| url | https://www.mdpi.com/2077-1312/10/11/1607 |
| work_keys_str_mv | AT junzhao oncubicspudcandeeppenetrationindensesandoverlyingnonuniformclay AT yangzhang oncubicspudcandeeppenetrationindensesandoverlyingnonuniformclay AT luyuliu oncubicspudcandeeppenetrationindensesandoverlyingnonuniformclay |