New tool can connect flanges remotely

Published November 8th, 2000 - 02:00 GMT

Statoil has adopted a new subsea tool that allows flanged piping to be assembled in deepwater without diver assistance.  


Developed in cooperation with Stolt Offshore, the new remote control technology has been dubbed the modular advanced tie-in system (MATIS.) The solution is said to be far more economical than the methods available in recent years for mechanical tie-in.  


The tool also represents an alternative to hyperbaric welding, which still requires the involvement of divers. The MATIS was successfully tested on four pipelines in about 700 feet of water on Statoil's Gullfaks satellites Phase II project in the North Sea.  


The lines, with diameters of 22 and 24 inches, were tied-back to Gullfaks C with the aid of the new tool. MATIS forms an integrated part of the pipeline repair system, a collection of tools for repairing and connecting pipes developed in cooperation with Norsk Hydro and held at Killingay north of Stavanger. 


© 2000 Mena Report (

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