Experimental investigation on the effect of spudcan shape on spudcan-footprint interaction.
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| Title: | Experimental investigation on the effect of spudcan shape on spudcan-footprint interaction. |
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| Authors: | Hossain, M.S.1 muhammad.hossain@uwa.edu.au, Stainforth, R.1 20263038@student.uwa.edu.au, Ngo, V.T.1 ngot02@gmail.com, Cassidy, M.J.1 mark.cassidy@uwa.edu.au, Kim, Y.H.1 youngho.kim@uwa.edu.au, Jun, M.J.1 minjung.jun@research.uwa.edu.au |
| Source: | Applied Ocean Research. Dec2017, Vol. 69, p65-75. 11p. |
| Subjects: | Jackup rigs, Drilling & boring, Ocean bottom, Hydrodemolition, Mechanical loads |
| Abstract: | The interaction between a spudcan and an existing footprint is one of the major concerns during jack-up rig installation. The influence of spudcan-footprint interaction has recently been well addressed by a number of researchers. A lack of investigation exists in mitigating spudcan-footprint interaction issues. In the field, stomping and successive repositioning is conventionally used in installing a rig adjacent to an existing footprint. Water jetting and perforation drilling are also sometimes suggested. This paper reports a measure for easing spudcan-footprint interaction issues, with the efficiency of a spudcan with 4 slots tested through model tests carried out at 1 g on the laboratory floor. The soil conditions tested simulate soft to moderate seabed strength profiles close to the mudline, varying the undrained shear strength. The most critical reinstallation locations of 0.5D and 1D (D = spudcan diameter) and existing footprint depths of 0.33D and 0.66D were investigated. By comparing with a conventional spudcan, the spudcan with slots reduced the induced maximum moment, horizontal force, and horizontal sliding distance by up to 80%, 40%, and 98% respectively. Critically, no additional operations, such as stomping/repositioning, perforation drilling, water jetting, are required to be performed offshore. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Ocean Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 126364500 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental investigation on the effect of spudcan shape on spudcan-footprint interaction. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hossain%2C+M%2ES%2E%22">Hossain, M.S.</searchLink><relatesTo>1</relatesTo><i> muhammad.hossain@uwa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Stainforth%2C+R%2E%22">Stainforth, R.</searchLink><relatesTo>1</relatesTo><i> 20263038@student.uwa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Ngo%2C+V%2ET%2E%22">Ngo, V.T.</searchLink><relatesTo>1</relatesTo><i> ngot02@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Cassidy%2C+M%2EJ%2E%22">Cassidy, M.J.</searchLink><relatesTo>1</relatesTo><i> mark.cassidy@uwa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Kim%2C+Y%2EH%2E%22">Kim, Y.H.</searchLink><relatesTo>1</relatesTo><i> youngho.kim@uwa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Jun%2C+M%2EJ%2E%22">Jun, M.J.</searchLink><relatesTo>1</relatesTo><i> minjung.jun@research.uwa.edu.au</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Ocean+Research%22">Applied Ocean Research</searchLink>. Dec2017, Vol. 69, p65-75. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Jackup+rigs%22">Jackup rigs</searchLink><br /><searchLink fieldCode="DE" term="%22Drilling+%26+boring%22">Drilling & boring</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+bottom%22">Ocean bottom</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodemolition%22">Hydrodemolition</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+loads%22">Mechanical loads</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The interaction between a spudcan and an existing footprint is one of the major concerns during jack-up rig installation. The influence of spudcan-footprint interaction has recently been well addressed by a number of researchers. A lack of investigation exists in mitigating spudcan-footprint interaction issues. In the field, stomping and successive repositioning is conventionally used in installing a rig adjacent to an existing footprint. Water jetting and perforation drilling are also sometimes suggested. This paper reports a measure for easing spudcan-footprint interaction issues, with the efficiency of a spudcan with 4 slots tested through model tests carried out at 1 g on the laboratory floor. The soil conditions tested simulate soft to moderate seabed strength profiles close to the mudline, varying the undrained shear strength. The most critical reinstallation locations of 0.5D and 1D (D = spudcan diameter) and existing footprint depths of 0.33D and 0.66D were investigated. By comparing with a conventional spudcan, the spudcan with slots reduced the induced maximum moment, horizontal force, and horizontal sliding distance by up to 80%, 40%, and 98% respectively. Critically, no additional operations, such as stomping/repositioning, perforation drilling, water jetting, are required to be performed offshore. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Ocean Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.apor.2017.10.003 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 65 Subjects: – SubjectFull: Jackup rigs Type: general – SubjectFull: Drilling & boring Type: general – SubjectFull: Ocean bottom Type: general – SubjectFull: Hydrodemolition Type: general – SubjectFull: Mechanical loads Type: general Titles: – TitleFull: Experimental investigation on the effect of spudcan shape on spudcan-footprint interaction. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hossain, M.S. – PersonEntity: Name: NameFull: Stainforth, R. – PersonEntity: Name: NameFull: Ngo, V.T. – PersonEntity: Name: NameFull: Cassidy, M.J. – PersonEntity: Name: NameFull: Kim, Y.H. – PersonEntity: Name: NameFull: Jun, M.J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 01411187 Numbering: – Type: volume Value: 69 Titles: – TitleFull: Applied Ocean Research Type: main |
| ResultId | 1 |
