Seadrill is examining the possibility of a second US Chapter 11 restructuring in two years to tackle its huge $7.4bn debt pile.
The John Fredriksen-backed drillship and rig owner has been hit by the severe downturn in oil markets caused by a price plunge, as well as coronavirus restrictions and the subsequent demand hit.
A Seadrill spokesman told the Wall Street Journal: "We are considering all options at this stage, of which Chapter 11 is one."