技术规范 PRODUCT SPECIFICATIONS
刀翼数量 Number of Blades	7
切削齿数量 Cutter Quantity	97
主切削齿尺寸 Primary Cutter Size	13mm
主切削齿数量 Primary Cutter Quantity	48
保径长度 Gauge Length	60mm
排屑槽面积 Junk Slot Area	7000mm2
连接扣型 Connection	4 1/2 REG
钻头重量 Bit Weight	46KG
喷嘴数量/类型 Nozzle Quantity/Type	7NZ

推荐参数 OPERATING RECOMMENDATIONS
钻压 Weight on Bit	30～120 KN
转速 Rotatoin Speed	50～250 RPM
排量 Hydraulic Flow Rate	25～40 L/S
上扣扭矩 Recommended Torque	16.63～23.71 Kn•m

设计特征 Design Features
■适应软—中等硬度地层。
Suitable for drilling soft to medium hard formations
■钻头体采用优质合金钢，具有极好的强度及韧性。表面强化，防止冲蚀，延长钻头使用寿命。
Bit body is made of superior alloy steel which has excellent strength and toughness&Bit surface is reinforced in order to prevent erosion and prolong service life of the bit.
■中、低密度布齿，深、宽排屑槽设计，满足快速钻进需求。
Middle or low density cutter arrangement and deep & wide junk slot design to satisfy requirement for fast drilling applications.
■抗冲击切削结构技术、辅助切削等技术的应用，增大了钻头适应范围
Applicable range of the bit is widened through utilization of technologies such as impact resistant cutting structure and auxiliary cutters, etc
■井底流场模拟（CFD）水力平衡设计
CFD hydraulic balance design.

PDC钻头 215.9 ES1357D/S333

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