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:
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钻头尺寸 (in)
BIT SIZE(in)
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钻头参数SPECIFICATION
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喷嘴数（个）
NOZZLE (PC)
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保径长度(mm)
GAGE LENGTH(mm)
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API接头（in)
API CONNECTION(in)
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8½
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4
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60
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4½
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推荐钻井参数RECOMMENDED OPERRATION PARAMETERS
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排量HYDRAULIC FLOWRATE
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转速RITATION
SPEED
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钻压WIGHT ON BIT
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(1/s)
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(gpm)
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(rpm)
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(KN)
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(Klbs)
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25-35
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400-500
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50-260
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30-100
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7-22
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