On November 19, China Oilfield Services Limited saw successful delivery of the deepwater semi-submersible drilling rig COSLProspector it invested in and commissioned to build in Yantai, Shandong.

COSLProspector has adopted the world’s most advanced energy management and environment-friendly design concepts and is equipped with advanced technologies including DP3 closed loop, smart inverters, escape slipways and automatic defrosting. With the most advanced drilling system in the world and Dynamic Positioning System DP3 installed, this rig is certified by both Det Norske Veritas (DNV) and China Classification Society and has met the world’s most stringent requirements by Norwegian Petroleum Directorate and NORSOK petroleum industry safety standards. Compared with the other deepwater semi-submersible rigs in the COSL series delivered earlier, including COSLPioneer, COSLPromoter, COSLInnovator, this rig has sought accreditations including ICE-T, CLEAN and WINTERIZATION, reaffirming its ability to operate under freezing, environmental-friendly and cold winter conditions. It can adapt to 90% of the water conditions in the world. Upon delivery, the rig will go through all necessary tests and adjustments, scheduled to be deployed to perform deepwater operations in South China Sea within the first half of 2015.