SINGAPORE (Reuters) - Pakistan State Oil (PSO) is seeking up to 960,000 tonnes of fuel oil for November to January 2011 delivery, a tender document showed on Tuesday. The amount of fuel oil required was higher than the 650,000 tonnes it bought for Oct-Nov delivery and nearly double the volume it sought a year ago. PSO bought less fuel oil for October-November delivery due to softer demand from utilities, as the countrys electricity network was disrupted by devastating floods that wrecked the country over the past month.