Jadestone Energy has reported damage at its Stag oil field offshore Western Australia after Cyclone Narelle developed into a Category 5 storm.

The company shut down the Stag facilities on 23 March due to the storm’s projected path and demobilised the platform. Jadestone Energy said Narelle brought sustained wind speeds of more than 200 kilometres per hour.

When personnel returned to the facilities on 28 March, storm-related damage was found on the platform and at the offloading facilities. Jadestone Energy is now assessing the damage and preparing repair plans to resume production.

The company said it has insurance cover for both physical damage and loss of production income and is working with insurers through the standard claims process. Based on currently available information, Jadestone Energy said it does not expect the incident to have a material financial impact on the group’s current-year or longer-term cash flow projections.

Before the shutdown, the field was producing about 2,000 bbls/d. Jadestone Energy also said the export lines were cleared of hydrocarbons before the shut-in and that there was no release of hydrocarbons to the environment.

Jadestone Energy acquired a 100% operated interest in Stag in November 2016. The field is located in the WA-15-L production licence area in the Carnarvon Basin, about 60,000 m offshore Western Australia, in a water depth of about 47 m.

Stag was developed with a fixed-leg, 12-slot manned central processing facility platform. The installation has a liquids production capacity of 50,000 bbls/d, including 30,000 bbls/d of oil. It is connected by an 8-inch subsea export pipeline to a pipeline end manifold, where shuttle tankers load crude through a catenary anchor leg mooring buoy.