Shell has undertaken planned stoppages on two of its seven assets affected by North Sea strike action.
The oil major said planned stoppages were taking place on Nelson and Shearwater platforms.
The industrial action affects the Shearwater, Gannet, Nelson, Curlew, Brent Alpha, Brent Bravo and Brent Charlie platforms.
A spokesman confirmed the maintenance work had taken place and is expected to last until early next week.
North Sea 48-hour strike: What we know so far
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