Tor Olav Troim-backed Borr Drilling has posted a bigger loss in the first nine months as operating expenses increased.
The Oslo-listed rig company said the net deficit was $26.3m, from $9.6m in 2016.
Costs were $42.7m against $24.9m, with no revenue. It took delivery of its first newbuild jack-up unit this month.
The start of a project for Total in Nigeria was delayed from the third quarter to later this month, it said.