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上海第一石油机械厂、上海材料研究所、兰州石油机械研究所、五七油田矿机研究所等单位,遵照毛主席“因结起来,争取更大的胜利”的伟大教导,在上海组成了钻头会战小组,共同研制了一种用于石油钻探的型号为“703—10Z”的新型三牙轮钻头。这种钻头在五七油田经过矿场试验,取得了较好的成绩。与成批生产的普通三牙轮钻头相比,“703—10Z”三牙轮钻头的轴承工作寿命提高了一倍左右。正常使用的这种新型试验钻头平均纯钻井时间达41小时35分,进尺也有大幅度的提高。“703—10Z”三牙轮钻头研制成功,是各
Shanghai No.1 Petroleum Machinery Factory, Shanghai Institute of Materials, Lanzhou Petroleum Machinery Research Institute, and the Institute of Mining Machinery of May 7 Oilfield, complied with the great teaching of Chairman Mao for “Striving for a Greater Victory for Knot Together” Drill team to jointly develop a new type of tricone bit “703-10Z” for oil drilling. This kind of drill bit passed the field test in the 57 oil field and achieved good results. Compared with the mass production of ordinary tricone bit, “703-10Z” tricone bit bearing life doubled. The normal use of this new pilot bit average pure drilling time of 41 hours and 35 minutes, the footage has also been greatly improved. “703-10Z” Tri-cone drill developed successfully, is all