在钻井过程中,由于环境(油、气、水和泥浆)和应力的交互作用,造成钻杆的严重腐蚀和损坏,其经济损失是相当可观的。为此,作者曾于1982年9、10月间,对四川、中原、胜利、华北和大港等五个油田的钻杆使用情况进行了初步调查,并在实验室开展了相应的加速腐蚀试验。一、钻井现场的初步调查见表1。 During drilling, the economic loss is considerable due to the severe corrosion and damage of the drill pipe due to the interaction of the environment (oil, gas, water and mud) and stress. To this end, the author conducted a preliminary survey on drill pipe usage in five oil fields in Sichuan, Central Plains, Shengli, North China and Dagang in September and October 1982 and conducted corresponding accelerated corrosion tests in the laboratory. First, a preliminary survey of the drilling site is shown in Table 1.