Size:4-5/8"

钻头规范 Bit Specification                                           

切削齿规格 Cutter Size:                      Φ8mm

喷嘴数量/类型 Nozzle Qty/Type:       5×Φ11mm

保径长度 Gauge Length:                    1.5＂

连接形式 Connection Type:               2-7/8＂API Reg

 推荐钻井参数 Recommendations                               

转速 Rotary Speed(rpm):            60～150

钻压 Weight on Bit(kn):              5～30

排量 Flow rate(lps):                     5～20

 特性及应用 Features and Application                        

1、浅抛物线、弧形五刀翼冠形和高密度布齿设计适合中硬到极硬地层；

Five arc blades, lower parabolic profile and very heavy cutter density are designed for medium hard to extremely hard formation;

2、使用不同专利技术的复合片提高了钻头钻进硬夹层的能力。

The layout of different patented PDC cutters enhances the capability of drilling hard stringers.