Sinopec Oilfield Service Corp. engages in the provision of integrated oil and gas engineering and technical services. Its business segments include geophysics, drilling engineering, logging, downhole special operations, and construction. Its segments cover the whole industry chain process including exploration, drilling, completion, oil and gas production, and oil and gas collection to abandoned wells. It offers services involving geophysics, drilling engineering, wells measuring, downhole special operations, construction, ocean engineering, and reservoir integrated services. The company was founded on December 31, 1993 and is headquartered in Beijing, China.