HBC226
锥形冠部，金刚石内外保径，一种型式为水道在北外保径处，使保径齿获得充分冷却和清洗，适用于中硬地层；另外一种为密闭式水道设置，减少了泥浆对岩芯的侵蚀，适用于松软的地层。
The bit is featured with arc crown profile, evaluate cutter placement, diamond ID&OD gage, one type is set-on-id gage fluid course, making the bit suitable for medium hard formation, the other type is with face discharge ports, significantly minimizing the fluid invasion of core. Suitable for soft and unconsolidated formations.
钻头尺寸（in） BIT SIZE(in) | 钻头参数SPECIFICATION |
液流面积（in²） TFA（in²） | 保径长度（mm） GAGE LENGTH(mm) | 取心筒尺寸（in） API CONNECTION(in) |
5-7/8 | 0.15-1.00 | 25 | 4-3/4×2-5/8 |
6 | 0.15-1.00 | 25 | 4-3/4×2-5/8 |
8-1/2 | 0.20-1.50 | 35 | 6-3/4×4 |
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) |
6-13 | 100-200 | 60-500 | 23-68 | 5-15 |
6-13 | 100-200 | 60-500 | 23-68 | 5-15 |
11-19 | 180-330 | 60-500 | 45-90 | 10-20 |
前缀代码说明：H=-厂家代码F-常规复合片4-钻头系列3-冠部轮廓高度5-刀翼数量D-附加特征代码
