Xodus and Subcon Offer Economic and Ecological Solution for Offshore Decommissioning

Published Nov 3, 2017
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Xodus/Subcon - Integrated Rigs to Reefs™ subsea layout
An Integrated Rigs to Reefs™ subsea layout (illustration: Xodus/Subcon)

Whilst the reefing of retiring offshore structures makes sense to many, such projects often struggle to address the regulatory hurdles, public perception and who takes the enduring liability for the asset. The Integrated Rigs to Reefs™ (IR2R™) solution resolves the many challenges owners face by augmenting and integrating the retiring assets into purpose built reefs.

Xodus Group is pleased to announce their new collaboration with stabilisation and artificial reef specialist Subcon International which will deliver IR2R™ decommissioning solutions globally. This partnership combines Xodus’ decommissioning capabilities with Subcon’s extensive track record in the design and construction of purpose-built marine habitats.

Enrico Salardi, Xodus Group’s Director of Decommissioning says, “IR2R™ is a decommissioning solution which provides many benefits to oil and gas operators, governments, local industries, communities and ultimately to the environment. The IR2R™ solution delivers material cost savings to operators whilst enabling them to turn a legacy asset into a positive legacy for the environment. Importantly, this industry-first offering provides a clear pathway for the transfer of ownership to state agencies.”

While the rigs to reef solution has a proven track record for generating decommissioning cost savings and for creating effective habitat, the question of who has enduring liability for the structure remains open. The IR2R model employs methods of relocation, augmentation and integration to completely reinvent the retired structures as productive, purpose built artificial reefs. Ownership and liability for the new asset is then able to be transferred to appropriate government agencies.

Subcon International CEO, Matthew Allen adds, “Our collaboration with Xodus enables more operators to benefit from our innovative IR2R™ model. The creation of new, purpose built habitat through the integration and augmentation of retiring marine structures, means degraded habitats can be restored and new habitats established. It reduces costs for the operator, reduces waste onshore, and establishes a more vibrant and productive marine environment for future users. It is a true win-win for all stakeholders.”

The partner’s first IR2R™ project is currently in its execute phase.

Tags: Subcon International, Xodus Group


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