Thailand’s upstream company PTT Exploration and Production Public Company Limited (PTTEP), said that its subsidiaries’ net profit for the first quarter of 2004 had risen by Baht 784 million from Baht 2,594 million over the same period last year. (US$1=40 baht). The company and its subsidiaries’ total revenues were up 28% to Baht 10,709 million,…