COSL Drilling Pan Pacific Limited is the international branch of China Oilfield Services Limited (COSL) for the Jack-up Division and operates a fleet of 8 high specification jack-ups.
COSL is the leading integrated oilfield services provider in the Asian offshore market and a majority-owned subsidiary of the CNOOC (China National Offshore Oil Corporation) Group. Its services cover each phase of offshore oil and gas exploration, development and production. Its four core business segments are geophysical services, drilling services, well services, and marine support and transportation services.
COSL as a whole possesses the largest fleet of offshore oilfield services facilities in China. To date, COSL operates and manages thirty-three jack-up rigs, twelve semi-submersible rigs and five modular rigs, 2 accommodation rigs and 6 land drilling rigs.
In addition, COSL also owns and operates the largest and most diverse fleet in offshore China, including more than 130 working vessels, 3 oil tankers, 5 chemical carriers, 9 seismic vessels, 4 surveying vessels, and a vast array of modern facilities and intrinsically developed and patented equipment for logging, drilling fluids, directional drilling, cementing and well work-over services.