Equinor warns of $1.8 bn impairment charge for Britain's Mariner oilfield

Norwegian energy major Equinor said on Wednesday it had cut the resource estimates for its Mariner oilfield in the British North Sea, triggering an impairment charge of around $1.8 billion.
 

Total recoverable reserves from the field, which is operated by Equinor with a 65.1% stake, is now estimated to be about 180 million barrels of oil equivalent, sharply down from 275 million barrels seen earlier, it said in a statement.
 

The impairment will be booked in Equinor's earnings report for the final quarter of 2021, which is due on Feb. 9, it added.

Equinor co-owns the Mariner oilfield with JX Nippon,