Offshore staff
LONDON – Petrofac has issued details of its contribution to Tullow Oil’s latest Thames area well decommissioning program in the UK southern North Sea.
These led to savings of more than $4 million, Petrofac claimed.
“It’s quite normal with legacy infrastructure to find that the original tree and wellhead equipment is no longer supported,” said Angus Hunter, wells manager.
“In addition, late life wells often have unknown pressure regimes. This combination presents a really interesting challenge for us to address as well operator.”
Petrofac was responsible for all subcontracted services on the project.
“This…enabled us to take a holistic approach that allowed us to optimize operations and maximize collaboration across the supply chain,” Hunter said, leading to completion of the P&A program ahead of schedule and significantly under budget.
“We worked together to implement alternative solutions to mitigate key risks and control project expenditure, from the deployment of air divers from the rig instead of utilizing a dive support vessel, to the novel application of a managed pressure drilling spread to mitigate the well re-entry risks of unknown pressure regimes.
“Together with our key contractors we also continually improved operational efficiency to reduce the campaign schedule.”
TAQA has renewed Petrofac’s Engineering and Production Services UK North Sea condition monitoring contract by a further three years.
The team will continue to provide onshore and offshore vibration analyses, and support TAQA in equipment troubleshooting and monitoring.
12/03/2018
