NEW YORK - Spectra Energy units Maritimes Canada and Maritimes U.S. said in separate website postings over the weekend that the Sable Island Offshore Energy Project in Nova Scotia had returned to normal output levels after decreasing production late last week.

According to the company's website, the Sable Project is owned by Exxon Mobil, Shell, Imperial Oil, Pengrowth Energy Trust and Mosbacher Operating Ltd.

The project normally produces between 400 million and 500 million cubic feet of natural gas and 20,000 barrels of natural gas liquids per day.

Natural gas from the Sable Project flows to markets in Atlantic Canada and New England on Spectra's Maritimes & Northeast Pipeline.

The 340-mile U.S. and 330-mile Canadian lines, with the capacity to deliver 440 mmcf per day in the United States and 530 mmcf per day in Canada, are majority owned by Spectra Energy Transmission, with Emera Inc (EMA.TO) and Exxon Mobil owning minority stakes. (Reporting by Eileen Moustakis; Editing by Walter Bagley)