China Oilfield Services Limited (COSL) said that it has signed a new service contract with Kerr-McGee China Petroleum Ltd. (KMCPL) for the CFD 11-1/2 oilfield of the Caofeidian 04/36 Block in the Bohai Bay. The drilling services contract, worth around US$80 million, includes cementing, drilling fluids, directional drilling, sand-prevention, perforation, logging, drilling and other related…