China Petroleum Group Bohai Drilling Engineering Co., Ltd. is a wholly-owned subsidiary of China Petroleum and Natural Gas Group.
It consists of five drilling engineering companies, mud logging department, pipeline engineering technology department, cementing engineering technology department, drilling engineering technology service department and drilling technology research institute, as well as two drilling companies, drilling technology service company, directional well technology service company, cementing technology service company, logging company and geological logging company. It belongs to the former Dagang Oilfield Group Company.
So we have branches in Cangzhou, Hebei and Dagang, Tianjin.