(EnergyAsia, September 5) — China Oilfield Services Limited (COSL), the leading integrated oilfield services provider for offshore China, said its first half net profit rose 22.7% to RMB 555.9 million. Revenue rose 32.1% to RMB 2,372.5 million. (US$1=RMB8.1).   It said its four business segments, drilling services, well services, marine support and transportation services and…