Hydratight, CSS Provide Pipeline Repair Solution Off Australia

Engineering teams from UK-based subsea connector specialists Hydratight and Norwegian technologists Connector Subsea Solutions (CSS) have completed a deepwater pipeline repair in Western Australia.

The team designed, manufactured and installed a diverless structural deepwater pipeline repair clamp for a 4” MEG line located at 830 meters water depth.

Prior to installation of the clamp, CSS and Hydratight also prepared the pipe using an ROV-based coating removal tool.

James Rowley, global subsea market development manager, Hydratight, said: “Projects at such subsea depths require comprehensive pre-planning, strong cooperation between contractors and clarity with the operator. We have worked with CSS many times before and they bring ingenuity and align with our own objective to solve complex problems. This was a milestone project to show what we can do in the Australian market and adds to our track record globally.

“Now that we have completed this high-profile repair in deepwater using our international resources we look forward to making this a key offering to major subsea oil and gas asset owners and operators wherever repairs are required.

“We have managed to lower operational costs and installation times by removing the activation system into a separate retrievable tool. Operators can now rely on a safe, tried and tested solution for fractures in hard-to-reach areas.”

Pål Magne Hisdal, chairman of Connector Subsea Solutions, added: “There is a growing trend of utilising new methods to repair pipelines in deepwater and ultra-deepwater scenarios.

“We are proud of our success with Hydratight and we expect a growing demand for this latest service as subsea assets age and require effective repair.”

The clamp is said will last up to 25-years in service. It has been designed without the use of bolt tensioning to activate. All activation technologies and hydraulics are in an external installation tool, which is removed on completion, the company explained.

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