Nemo Engineering, the subsea unit in Apply, has been awarded a contract with Statoil Petroleum AS for the delivery of two 12’’ Hot Tap Gooseneck Spools on the Åsgard Subsea Compression Project, with the purpose to ensure an extended lifetime and increased exploitation for the Åsgard field in the North Sea. The contract value is approximately 50 mNOK(USD 8.88 Million), and the equipment will be delivered autumn 2011.
The Nemo workscope comprises engineering, procurement and fabrication of the two Hot Tap Goosenecks Spools including connectors and installation system. Nemo will also build installation arrangement for two Hot Tap valves.
The equipment will connect two 12” branches between a new subsea compressor station and the existing 20” Midgard pipeline. The term “Hot Tap” means that the 20” Midgard pipeline will be carrying gas under pressure when the 12’’ branches are prepared and connected.
The Hot Tap locations are at 260 m depth – beneath reach of divers. Furthermore these Hot Taps are “retrofit”, meaning that new tees must be installed subsea.
Håkon Strømberg, the MD of Nemo stated: “The project is considered to be technologically challenging, and the contract is a result of many years of experience with this type of deliveries which Nemo has supplied to Statoil and others.”
A typical gooseneck is a section of pipe connecting one pipeline system to another. The goosenecks that Nemo has fabricated are most often used in conjuction with hot tap tee systems. In such applications the most important design criteria is to absorb the tie in loads in order to protect the hot tap tee branch. Hot tap goosenecks also need to be adjustable to cater for the installation tolerances.
Nemo Engineering AS has its main office at Lysaker outside Oslo, its fabrication facility at Hokksund (Nemo Technology) and a subsidiary, Nemo Offshore Pty, in Perth, Australia. The Nemo-group is expecting a turnover of 260 millions NOK in 2011.
Source:Apply, March 17, 2011 , Image:Nemo Engineering