OSLO, Norway – The Norwegian Petroleum Directorate (NPD) has called for increased adoption of dry-tree unmanned wellhead platforms on fields offshore Norway as an alternative to subsea tiebacks.
NPD has commissioned Rambøll Oil & Gas to undertake a study into the benefits and disadvantages of these facilities.
“The main argument in favor of unmanned wellhead platforms as a concept is that this could be an efficient development solution in terms of both cost and production,” said Niels Erik Hald, NPD’s principal engineer.
“In fact, it is just as functional and robust as a subsea development, and it is also more accessible for inspection and maintenance.”
There are various types of unmanned wellhead platforms – from simple facilities to more complex versions carrying process equipment. Some can be entered from vessels, while others feature bridges or helicopter decks.
NPD say the study will improve knowledge of the different types of unmanned wellhead platforms. It is due to be submitted to the Norwegian authorities by year-end.
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