产品特点:
HF434金刚石钻头
4刀翼短抛物线轮廓，力平衡 非对称刀翼布齿，水力优化设计，在软至中软地层可获得较高钻速。
The design of short parabolic profile with 4 –blade type configuration,force balanced and asymmetrical cutter placement, optimized flow hydraulic,makes the bit suitable for drilling in soft to medium soft formation with high penetration rate.
产品参数:
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RECOMMENDED 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
