Cost Effective Subsea Rock Removal Tool for Deepwater Applications

Once again, Scanmudring proved that the adaption of known and tested onshore equipment can be transferred to subsea remote operations with great success!

Deep water rock formations have traditionally been avoided during pipeline route selection instead of being modified to allow for safe pipeline installation. This is mainly due to lack of proven tools for deep-water rock removal and/or due to high costs for the operation. For the deep-water challenges on the Johan Sverdrup project the use of conventional drill and blast methods was investigated but found to represent a too high risk. This was because of the proximity to existing live pipelines in the fjord and no reference to any previous rock removal, using drilling nor blasting at this water depth. Scanmudring was approached by Equinor to perform a feasibility study for the rock removal required at the landfall tunnel exit area outside Mongstad to allow for a safe pull-in of Johan Sverdrup oil pipeline. The feasibility study evaluated a wide range of available tools for subsea rock removing, all tools suitable of being mounted on a Scanmachine.

In conjunction with the 2019 ISOPE conference, Scanmudring prepared an article in collaboration with Equinor and DeepOcean which presented the background, the introduction of a variety of new tools and the offshore execution campaign.

To view full article – See more

More news

New Headquarters for Scanmudring

Scanmudring is currently building a new headquarter at Gismerøya in Mandal, Norway. The building will be completed in October/ November of this year, and will in addition to 3-floor office space include 12,000 m2 plot area, 1,100 m2 Workshop, 200 m coastline with...

Article in Inside Oil & Gas Magazine

Scanmudring is featured in the November edition of Inside Oil & Gas MagazineBy cliking in this link; you will find the article from page 87-91. 

New web for Scanmudring

Scanmudring recently launched a new web page. The new page has an up-to-date design, is easier to navigate in and shows the company’s broad diversification in various industries and services in a more clear manner.

UKCS operations with Rever Offshore

Together with Rever Offshore on Maersk Inventor, Scanmudring recently executed a rock pad remediation scope. Another successful rock pad removal project was recently executed at Loggs, Vulkan, Viking and Jade utilizing our 40Te Scanmachine. Scanmudring’s services are...

Another job well done at Heimdal

Earlier this summer Scanmudring completed a seabed intervention project on the Heimdal field in NCS. The mighty Heimdal main platform in the picture below is still standing strong.Scanmudring was part of a very challenging project where the end goal is to distribute...