Trenching
Sonsub has long aided the oil and gas industry by providing a variety of subsea support services including post-lay inspection and burial, as well as repair and maintenance. Thanks to our in-house trenching expertise and highly successful, state-of-the-art Innovator ® ROV design, Sonsub has been able to develop trenching technology capable of meeting the most challenging environments.
Sonsub owns and operates a number of systems for subsea pipeline, umbilical and cable trenching that allows us to provide safe and reliable solutions to the challenges faced during subsea burial operations. Such systems have been developed to perform in different soil conditions, from very soft mud to rock, in water depths of up to 2,500 metres and on steep seabed slopes.
Sonsub’s fleet includes the following completely remote operated equipment:
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Sedna: |
Cables and Umbilicals |
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Flexjet II: |
Cables, Umbilicals and small diameter pipelines |
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Giano: |
Pipelines in shallow water and soils of up to 400kPa |
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Beluga: |
Pipelines in deep water and soils of up to 30MPa |
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Ploughs: |
Two large pipeline ploughs (PL2 + BPL2) for the burial and back filling of large rigid pipelines up to 48" in diameter, with a further two
next generation ploughs (PL3 + BPL3) being delivered in 2008 |
Sonsub's unique research and development, engineering and manufacturing capacity allows us to develop custom trenching systems to suit any application.
