Accelerated due diligence work by Yukos Oil's advisers has put restructuring plans for Kvaerner, the troubled Norwegian construction company, back on track with an early payment of Nkr400m (€50m).

Earlier this week Kvaerner and Yukos, the Norwegian company's 22.5% shareholder, feared that a Nkr3bn rescue rights issue for Kvaerner would be scuppered unless Kvaerner could quickly find a cash injection.