Administrators overseeing the insolvency of Petrofac are pushing to finalize a sale of the company's North Sea operations before Christmas, a move that could impact thousands of jobs in the United Kingdom. Several bids for the profitable UK business were received last week, with the shortlist now narrowed to about five contenders. Petrofac, once a prominent player in the energy sector, entered administration following the loss of a major contract and ongoing financial struggles. The sale of its other international businesses is expected to begin in the new year.