ENERGY DEVELOPMENT <EDP> HAD YEAR LOSS Energy Development Partners Ltd said it had an operating loss for the year ended December 31 of 2.4 mln dlrs, or 40 cts per share. But it said a 41.5 mln dlr non-cash writeoff of oil and gas properties taken in the first quarter resulted in a net loss of 43.9 mln dlrs, or 7.21 dlrs per share. Energy Development Partners, is a limited partnership which began operating in September 1985. Full year revenues totaled 23.7 mln dlrs, the company also said. It said proved reserves at December 31 totaled 4.8 mln barrels of oil and 88 mln cubic feet of natural gas.