Size:8-1/2"          

鉆頭規范 Bit Specification                                           

切削齒規格 Cutter Size:                      Φ13mm,Φ16mm

噴嘴數量/類型 Nozzle Qty/Type:      W16x6

保徑長度 Gauge Length:                    2.5＂

連接形式 Connection Type:               4-1/2＂API Reg

 推薦鉆井參數 Recommendations                               

轉速 Rotary Speed(rpm):            60～260

鉆壓 Weight on Bit(kn):              20～80

排量 Flow rate(lps):                     22～40

 特性及應用 Features and Application                        

1、中等拋物線六刀翼冠形和中等密度布齒適合鉆進中硬到硬地層；

The shape of medium parabolic curve and six-blade crown and the medium dense teeth is suitable for the med-hard to    hard formation.

2、長保徑設計有利于定向井鉆井。

Long gauge protection design is beneficial directional well drilling.