DUC's exports of natural gas rose to 510 million cubic metres from 440 million in December and was down from 520 million a year earlier, Maersk said.
DUC is responsible for most of the petroleum output from Denmark's North Sea oil and gas fields. Denmark is the third-biggest producer in western Europe after Norway and Britain.
Danish shipping and oil group A.P. Moller-Maersk owns 39 percent of DUC. Royal Dutch Shell Group has 46 percent and Chevron a 15 percent stake in the partnership.