Oil price war may trap private-equity firms in North Sea

Workers operate the rotary table and drill pipes on an oil drilling rig, operated by Tatneft PJSC, on an oilfield near Almetyevsk, Tatarstan, Russia, on Wednesday, March 6, 2019. Tatneft explores for, produces, refines, and markets crude oil. Photographer: Andrey Rudakov/Bloomberg
Workers operate the rotary table and drill pipes on an oil drilling rig, operated by Tatneft PJSC, on an oilfield near Almetyevsk, Tatarstan, Russia, on Wednesday, March 6, 2019. Tatneft explores for, produces, refines, and markets crude oil. Photographer: Andrey Rudakov/Bloomberg