We are Greatwall Drilling Asia Pacific (GDAP), a company of CNPC (China National Petroleum Corporation), is an Engineering and Services company providing onshore drilling operations and oil field services to the worldwide oil and gas industry. Through years'​ successful operations after its establishment in 1990, GDAP has made rapid growth into an international drilling contractor and oil field services provider with the main business scope covering drilling, work over, seismic, wire line, mud logging, cementing, drilling fluid services, coring, fishing, testing, top drive and equipment and tools rental and technical consultation and training for petroleum exploration and development activities. Greatwall Drilling launched its business in Indonesia since1999 and PT. Greatwall Drilling Asia Pacific was established to provide services including but not limited to Drilling, Cementing Services, Mud Services, Top Drive, Oil field Tools or facilities supply.
