Norsk Hydro Gets Consent to Use Deepsea Delta on Oseberg


Oseberg Field - North Sea
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Norsk Hydro Produksjon AS has received consent to use the Deepsea Delta for work in connection with permanent plugging of subsea satellite well 30/9-B-49 H on Oseberg.

The well has been shut in since 1998.

The plan is to carry out a permanent plugging* of the well, but to leave the wellhead, pipelines and template structure in place until the rest of the Oseberg field facilities are to be removed.

*Plugging -- Securing a well by installing well barriers. The well barriers may consist of cement plugs, mechanical plugs or a combination of these. We differentiate between temporary plugging, where one plans to reconnect the well; and permanent plugging, in which the well is permanently abandoned.

The Deepsea Delta semisubmersible built at Rauma Repola in 1981.

The facility is owned and operated by Odfjell Drilling and it has been modified and upgraded on several occasions. In October/November 2006, the Deepsea Delta was at a workshop in connection with its five-year classification.

According to the plan, the estimated duration of the work on Oseberg is 39 days.

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