OSLO, Oct 7 (Reuters) - Equinor will shut production from its Kristin, Tyrihans, Oseberg East and Oseberg South oil and gas fields if a strike by the Lederne labour union is expanded as planned on Oct. 10, a company spokesman told Reuters on Wednesday.

It was not immediately clear how big the outage would be in terms of oil and gas production volumes.

The company earlier on Wednesday said its giant Sverdrup field is at risk of shutdown from Oct. 14 onwards. (Reporting by Nerijus Adomaitis, writing by Terje Solsvik, editing by Gwladys Fouche)