钻头尺寸(in)

BIT SIZE(in)

钻头参数SPECIFICATION

喷嘴数（个）

NOZZLE (PC)

保径长度(mm)

GAGE LENGTH(mm)

API接头（in)

API CONNECTION(in)

8½

4

60

4½

推荐钻井参数MENDED OPERRATION PARAMETERS

排量HYDRAULIC FLOWRATE

转速RITATION

SPEED

钻压WIGHT ON BIT

(1/s)

(gpm)

(rpm)

(KN)

(Klbs)

25-35

400-500

50-260

30-100

7-22