HONG KONG (AFX-ASIA) – Standard & Poor’s Ratings Services has maintained its BBB+ foreign currency rating on Hong Kong-listed CNOOC Ltd (883.HK) after the company reported a 2003 net profit of 11.98 billion yuan, up 32% over 2002. (US$1=8.27 yuan). “However, the positive effect of higher oil prices has been partially offset by an increase…