四川石油管理局成都石油总机械厂研制的新产品——川石D215.9MPI型三牙轮钢齿钻头于口前通过质量检查获石油天然气总公司优质产品奖。中国石油天然气总公司优质产品检查组于5月对此型钻头进行了全面质量检查,合格率达95％以上。现场使用取得了良好成效,据中原油田提供的资料,1987～1989年在明化镇至馆陶组地层使用102只,平均进尺866.28m,平均纯钻30.07h,平均机械钻速28.81m/h,每米钻井成本比D215.9X3A钻头降低6.2％,比 Sichuan Petroleum Administration Chengdu Petrochemical Machinery Factory developed a new product - Chuan Shi D215.9MPI-type three-tooth steel cone teeth in front of the mouth through the quality inspection by the Oil and Natural Gas Corporation Quality Products Award. China National Petroleum Corporation quality product inspection team in May this type of drill carried out a comprehensive quality inspection, with a pass rate of 95%. Field use has achieved good results. According to the information provided by Zhongyuan Oilfield, from 1987 to 1989, 102 were used in the formation of the Guantao Formation in Minghua Town with an average footage of 866.28m, an average of 30.07h of pure drilling and an average ROP of 28.81m / h , Drilling costs per meter lower than the D215.9X3A drill 6.2%, than