Australian upstream company Santos Limited said its net operating profit after exploration write-offs for 2003 came to A$327.0 million, or 52.1 cents per share, up from A$322.1 million in 2002. (US$1=A$1.3). The result was achieved on steady sales revenue of A$1.465 billion. Full year earnings before interest, tax, depreciation, depletion and amortisation (EBITDA) were A$1.061…