China Oilfield Services Limited is a limited liability company incorporated in the People's Republic of China. The Company is the oilfield service provider in the offshore China market. Its services cover each phase of offshore oil and gas exploration, development and production. The Company and its subsidiaries are engaged in the provision of oilfield services including drilling services, well services, marine support and transportation services, and geophysical and surveying services. The Company has four reportable operating segments as follows: the drilling services segment is engaged in the provision of oilfield drilling services, the well services segment is engaged in the provision of logging and downhole services, such as drilling fluids, directional drilling, cementing and well completion, and the sale of well chemical materials and well workovers, the marine support and transportation services segment is engaged in the transportation of materials, supplies and personnel to off-shore facilities, moving and positioning drilling structures, the transportation of crude oil and refined products and the transportation of methanol or other petrochemical products and the geophysical and surveying services segment is engaged in the provision of off-shore seismic data collection, marine surveying and data processing services. Read More