Size:12-1/4"          

鉆頭規范 Bit Specification                                           

切削齒規格 Cutter Size:                      Φ13mm、Φ19mm

噴嘴數量/類型 Nozzle Qty/Type:      W22x6

保徑長度 Gauge Length:                    2.5＂

連接形式 Connection Type:               6-5/8＂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密度布齒適合鉆進中軟到中硬地層；

The shape of medium parabolic curve and five-blade crown and the medium density cutter is suitable for the mid-soft and mid-hard formation.

2、適合較硬地層鉆進的水力排削槽設計使冷卻和排削充分,有效地減少了鉆頭泥包的可能。

The design of hydraulic scrape discharge tank realize full cooling and scrape discharge, effectively reducing the possibility of mud drum.