(EnergyAsia, April 3) — Hong Kong-listed China Oilfield Services Limited (COSL), a leading oilfield services provider for offshore China, said its 2005 net profit jumped 17% to RMB821 million on revenue of RMB4.79 billion, which was up 25.2% from 2004. (US$1=RMB8.02). COSL said its four business segments, drilling services, well services, marine support and transportation…