CIS Delivers Piling for Subsea 7

Conductor Installation Services (CIS), an Acteon company that provides hammer services to install conductors and drive piles, has successfully completed a subsea piling operation for Subsea 7 in the UK North Sea.

The operation was executed as part of the Cladhan field development, located approximately 100 km northeast of the Shetland Islands. The development will eventually connect Cladhan field via a new subsea tieback to the Tern Alpha oil production platform, which lies 17.5km northeast of Cladhan field.

In preparation for the tieback, CIS drove piles to secure a subsea manifold to the seabed on Cladhan field.

“This operation on Cladhan field for Subsea 7 was the first time that the company had commissioned a subsea operation from CIS to use our remotely-operated Subsea Piling System,” said Andy Penman, Group Managing Director of CIS. “We are very pleased that it performed reliably, and that the operation was completed ahead of schedule.”

Work was carried out in May as a result of a contract awarded to CIS by Subsea 7 on April 9, 2015.

CIS worked in a maximum water depth of 160 meters to drive four 24-inch pipeline end manifold (PLEM) piles. Each pile was driven to its target depth of 12 metres.

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