SEOUL - South Korea's SK Energy will export 500,000-600,000 barrels of spot diesel in December, compared with 600,000 barrels this month, a company source said on Wednesday.

The country's top oil refiner had no immediate plan to raise export volumes as it will focus on supplying long-term contracts, the source added.

(Reporting by Cho Meeyoung; Editing by Jonathan Hopfner)