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一、引言 毛主席教导我们:“一切产品,不但求数量多,而且求质量好,耐穿耐用。”随着石油工业的飞速发展,对石油钻井工具的质量提出了更高的要求。 钻杆打捞公锥是钻井过程中处理钻杆断裂事故的主要工具。无产阶级文化大革命以来,国产公锥不断从热处理工艺上进行了改革,质量有所提高,但仍远远不能满足油田的需要。 钻杆打捞公锥的主要质量问题是使用寿命较低。据调查,原20CrMo公锥一般只能下井打捞一次,有的公锥甚至连一次打捞也不能完成。由于公锥寿命低,造扣能力差,使井下事
I. INTRODUCTION Chairman Mao teaches us: “All products, not only for quantity, but also for good quality and durable wear and tear.” With the rapid development of the petroleum industry, the quality of oil drilling tools has put forward higher requirements. Drill pipe salvage Cone is the main tool for handling drill pipe breakage during drilling. Since the Great Proletarian Cultural Revolution, Gonggong made progressively from the heat treatment process to reform, quality has improved, but still far from meeting the needs of the oil field. Drill pipe salvage cone the main quality problem is the lower life. According to the survey, the original 20CrMo male cone can only be salvaged once and for all, and some male cones can not be completed even once by salvage. Due to the low cone life, making deduction poor, so that things downhole