In situ decommissioning of subsea infrastructure
In situ decommissioning of subsea infrastructure
From an engineering and ecological perspective is it more rational to leave offshore oil and gas infrastructure in situ after decommissioning? This paper addresses that question. Options for decommissioning offshore infrastructure are set out. The emphasis of this paper is decommissioning of subsea infrastructure, which comprise a large proportion of current oil and gas offshore infrastructure, and an increasing proportion of total offshore assets in the future. This is due to the global trend towards multi-field developments tied back to a host platform or directly to shore, or to a floating LNG production platform. Potential challenges associated with retrieval of subsea structures and pipelines, and their long term stability, are considered from a geotechnical perspective. Viewed through the lens of in situ decommissioning, the evidence of a general long term rise in bearing capacity and stability indicates potential for infrastructure to have a safe and valuable post-operational afterlife as part of the marine ecosystem.
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
March 2017
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Gourvenec, Susan and White, David
(2017)
In situ decommissioning of subsea infrastructure.
Conference on Maritime Energy, Decommissioning of Offshore Geotechnical Structures, , Hamburg, Germany.
28 - 29 Mar 2017.
34 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
From an engineering and ecological perspective is it more rational to leave offshore oil and gas infrastructure in situ after decommissioning? This paper addresses that question. Options for decommissioning offshore infrastructure are set out. The emphasis of this paper is decommissioning of subsea infrastructure, which comprise a large proportion of current oil and gas offshore infrastructure, and an increasing proportion of total offshore assets in the future. This is due to the global trend towards multi-field developments tied back to a host platform or directly to shore, or to a floating LNG production platform. Potential challenges associated with retrieval of subsea structures and pipelines, and their long term stability, are considered from a geotechnical perspective. Viewed through the lens of in situ decommissioning, the evidence of a general long term rise in bearing capacity and stability indicates potential for infrastructure to have a safe and valuable post-operational afterlife as part of the marine ecosystem.
Text
24 Gourvenec White_In situ decommissioning of subsea structures_COME DOGS 2017 keynote
- Accepted Manuscript
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Published date: March 2017
Venue - Dates:
Conference on Maritime Energy, Decommissioning of Offshore Geotechnical Structures, , Hamburg, Germany, 2017-03-28 - 2017-03-29
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Local EPrints ID: 423123
URI: http://eprints.soton.ac.uk/id/eprint/423123
PURE UUID: 8168545e-df61-4205-b6ef-8852e7748732
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Date deposited: 14 Aug 2018 16:30
Last modified: 16 Mar 2024 04:32
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