CNPC Bohai Drilling Engineering Co., Ltd. Pipe and Well Control Technology Service Branch, established on 2008-09-03, Business scope includes drilling technology development,transfer,consultation service;Petroleum special equipment,equipment,tool,Instrument R&D,manufacture,Maintenance and related technical services(Well control device,Drilling Tools and Drilling,Downhole Tool Repair,Installation technical service);Drilling technical service(UBD,Fine managed pressure drilling and gas drilling technical services;Nitrogen injection gas lift and oil displacement technical services;Casing,Down the tubing,salvage,Casing forging milling and window opening technical services);Oil and Gas Exploration,drilling engineering,infrastructure,Drilling engineering design and construction integrated service(Well site and road construction,piling work,Foundation construction,earthwork before drilling,civil engineering;Drilling Waste Treatment While Drilling,Completion solidification and non-landing treatment environmental protection projects);supply of means of production,processing,manufacture,Sales(to drill,Derrick of workover rig,Supporting camping room,Eco-friendly toilet,tank,Manufacture of instruments and accessories,processing(Operating outside the restricted area),repair;Volvo internal combustion engine repair and spare parts sales;Heating of boiler equipment,Overhaul technical service);Relevant training and accommodation(The operating permit).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)