Activity - Petrel-3 and Petrel-4 Monitoring and Decommissioning
Activity - Petrel-3 and Petrel-4 Monitoring and Decommissioning
Activity details
| Organisation | Eni Energy Bonaparte Pty Ltd |
|---|---|
| Project | |
| Activity types | Any other petroleum-related activity |
| In-force EP | 8007 |
| Submission date | 10 October, 2024 |
| Outcome | Accepted |
| Acceptance date | 28 October, 2025 |
| Locations |
Northern Territory
|
| Start date | 26 August, 2023 |
| Stop date | Pending titleholder notification |
| Lifecycle Classification | Decommissioning |
Titleholder contact
| Activity Description |
|---|
|
Eni Energy Bonaparte Pty Ltd is the titleholder of the Petrel gas field in the Bonaparte Basin in northern Western Australia. The Petrel field is located in permits NT/RL1 and WA-6-R, in water depths of ~95m. The activity applies to two wells within NT/RL1 (Petrel-3 and Petrel-4) which were suspended in the 1980s. The defined petroleum activity for the Petrel-3 and Petrel-4 Monitoring and Decommissioning EP (the petroleum activities) will be limited to: - Annual general visual inspections (GVI) as part of the in-force Well Operations Management Plan (WOMP) until permanent Petrel-3 and Petrel-4 plug and abandonment (P&A). The current in-force WOMP will be updated in 2025 to include P&A activities, following the pre-decommissioning inspection - A geophysical and geotechnical survey campaign - A pre-decommissioning inspection to prepare the wells for decommissioning and inform wellhead removal methodology - The decommissioning campaign, to permanently seal and abandon the Petrel-3 and Petrel-4 wells and retrieve subsea equipment at or below the mudline - In the event that all reasonable attempts to remove and recover the wellheads and associated equipment are unsuccessful, a contingency activity to leave in-situ any property that could not be removed has been included, and - A post-decommissioning seabed survey. |
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