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四川石油管理局成都总机械厂吸收国外大尺寸钻头的最新研究成果,研制成17(1/2)XHP3S型三牙轮钻头。该型钻头采用带贮油补偿装置的密封滑动轴承结构和高压水力喷射系统,以冲击、刮削和碾压作用破碎岩层的方式钻进。一只试制钻头在川西北矿让水1井飞仙关地
Sichuan Petroleum Administration Chengdu Machinery Plant to absorb the latest research results of large-size drill abroad, developed into 17 (1/2) XHP3S-type tricone bit. The drill uses a sealed sliding bearing arrangement with oil reservoir compensation and a high-pressure water jet system to drill in the manner of rock breaking, skiving and crushing. A trial drill in the northwest of Sichuan Mine let a well Feixianguan