Oilfield service is a key link in CNPC’s core business chain. With well trained service crews equipped with sophisticated and specialty techniques and skills, we provide a series of oilfield services including geophysical prospecting, drilling, well logging, mud logging and downhole operations in more than 40 countries under various geologic and engineering conditions of land, tidal zone and shallow water areas, mountains, plateau, Gobi, desert, swamp, etc.