World record at Trolla

This article originates from the news archive of Det norske.

2. December 2009

As a first on the Norwegian continental shelf, a wellhead was cut and removed from a vessel instead of a rig. In addition to being first out on the Norwegian shelf with this solution, we set a world record with 270 meters of water depth.

The previous record for this technology was at 141 meters.

Casing after cut

Picture above shows the 30″ and 13 3/8″ casing after with sement after the cut.

After trouble freeing the 9 5/8 “casing, the well was abandoned 3 October, after it was secured in accordance with the PSA regulations.

Norse Cutting & Abandonment Norway AS (NCA) was contacted to plan for cutting and retrieving the wellhead to a vessel.

Olympic Zeus croppNCA’s equipment was installed on the anchor handling vessel Olympic Zeus (image on the left, click for bigger version) in Stavanger 17 and 18 November, and demobilized the same place on 23 November after a highly successful cutting- and lifting job.

The entire operation was conducted without any HSE remarks.

About Det norske (DETNOR`) before the merger with Aker Exploration:
Det norske is the second-largest operating company on the Norwegian Continental Shelf with 28 operatorship and interests in a total of 52 licenses. Det norske is the operator of the Frøy Field development and will also operate eight to nine exploration wells in the North Sea and Norwegian Sea during 2009. Det norske’s scope of activities is limited to the Norwegian Continental Shelf (NCS).

Det norske currently employs a staff of 146 and the strong growth rate continues. The company`s registered office is located in Trondheim and the headquarter operations is divided between Oslo and Trondheim. The company also has offices in Harstad, and Stavanger.