HF434
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 ration rate.
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 |
前缀代码说明：H-厂家代码 F-常规复合片 4-切削齿尺寸 3-冠部轮廓高度 4-刀翼数量
