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1990年4月2日～4日,四川石油管理局钻头技术座谈会在都江堰市召开。与会的有四川石油管理局领导、处室、局属矿区钻探公司及14个钻井队,钻采工艺研究所,成都总机械厂,川克公司等单位的领导、专家、科技人员近120人。交流了钻头制造、使用的经验和教训,研讨了钻头设计、制造、管理和使用上采取的有效措施。钻头平均进尺以100％的速度逐年上升,与1979年相比钻头进尺增加了一倍。针对轴承磨损影响采用新型锁紧结构,采用新型储油补偿装置,牙爪轴颈采用角偏移,改善“O”型密封
April 2, 1990 to April 4, Sichuan Petroleum Administration drill technology forum held in Dujiangyan City. At the meeting, there were nearly 120 leaders, experts and scientific and technical personnel from the leaders and offices of Sichuan Petroleum Administration Bureau, Bureau of Mineral Drilling Company and 14 drilling crew, research institute of drilling technology, Chengdu General Machinery Plant, Chuanke Company and other units. Exchanged the experience and lessons learned in the manufacture and use of drill bits, and discussed the effective measures taken in the design, manufacture, management and use of drill bits. The average footage of a drill increases year by year at a rate of 100%, double the bit footage compared with 1979. A new type of locking structure is adopted for bearing wear. A new type of oil reservoir compensation device is adopted. The tooth claw journal adopts angle offset to improve “O” type seal