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Recognised by the Oil & Gas sector as an innovative solution, the Filter unit Rockbag has been used widely in the Northern North Sea for subsea asset protection.
Proven to provide a solution against spans, the flexible nature and versatility of the Filter unit Rockbag allows it to be installed under flowlines and umbilicals, effectively adapting to the undulating topography of the seabed.
The 8T Rockbag offers the ability to accurately “spot dump” 8 tonnes of loose stone in one concentrated area. This option offers a method of protecting assets located in areas restricted to certain sizes of vessels or if an asset requires a small amount of loose rock effectively eliminating the need for an expensive rock dumping vessel.
Installation is achieved with an ROV and high-resolution sonar imaging which significantly reduces health and safety risks. Once installed the Rockbags will last a minimum of 50 years in saline water and can be installed as a temporary or permanent solution for subsea asset protection.
Rockbags can be easily decommissioned or retrieved once the asset has reached its end of life. The one-point lifting ring, that remains as part the product after installation, makes the decommissioning process simple and cost effective.