product name API Great 2 7/8''--17 1/2'' PDC BIT/Diamond Bit without Cutters
No cutters semi-finished water drilling
No cutters semi-finished water drilling
1. For water well drilling
2. Various of model and dimension available
3. Reduced drilling costs
4. High compressive materials improve gage wear
5. Low torque design Improves drilling efficiency
6. Asymmetric blades design improves pdc bit stability
7. High performance PDC used in combination improves drill bit life.
8. Highly resistant to abrasion and erosion with the ability to withstand high
compressive loads
9. No cutters semi-finished water well pdc bit
| Drill Parameters | |||
| Size | Hydraulic Flow Rate | Rotation Speed | Weight on Bit |
| Inch | gpm | rpm | lbs |
| 6" | 200~350 | 80~380 | 2,000~15,000 |
| 8 1/2" | 300~500 | 60~350 | 3,000~11,000 |
| 9 7/8" | 400~600 | 60~350 | 4,000~20,000 |
| 12 1/4" | 550~850 | 60~350 | 4,000~14,000 |
| 17 1/2" | 950~1,450 | 60~240 | 5,000~24,000 |
| Operating Parameters | |||||
| Size | Blades | Nozzles | Primary Cutter Size | Guge | API Pin Connection |
| Inch | mm | Inch | Inch | ||
| 6" | 3~6 | 4~7 | Φ13 | 1.5"~2.5" | 3 1/2" API Reg |
| 8 1/2" | 3~6 | 4~7 | Φ19 Φ16 Φ13 | 2"~3" | 4 1/2" API Reg |
| 8 3/8" | 3~6 | 4~7 | Φ19 Φ16 Φ13 | 2"~3" | 4 1/2" API Reg |
| 9 1/2" | 3~7 | 4~10 | Φ19 Φ16 Φ13 | 2"~3" | 6 5/8" API Reg |
| 9 7/8" | 3~7 | 4~10 | Φ19 Φ16 Φ13 | 2.5"~3.5" | 6 5/8" API Reg |
| 12 1/4" | 3~7 | 4~10 | Φ19 Φ16 Φ13 | 2.5"~3.5" | 6 5/8" API Reg |
| 17 1/2" | 3~7 | 4~10 | Φ19 Φ16 Φ13 | 3.5"~5.5" | 7 5/8" API Reg |
| Formation Guide | ||||
| Formation | IADC | Formation | Rock Type | Formation |
| Very soft | 1 | Ultra soft formations with low compressive strength and sticky layers | Gumbo, Clay, Marl | 1~2 |
| Soft | 2 | Soft formation with low strength and high drillability | Clay, Salt, Anhydrite, Shale | 2~3 |
| Soft to Medium | 3 | Soft to medium formations with low compressive strength | Sand, Shale, Chalk | 2~4 |
| Medium to Hard | 4~6 | Medium to hard formations with high compressive strength and low abrasiveness | Shale, Limestone, Mudstone,Sandstone | 3~5 |
| Hard | 7 | Hard and dense non-abrasive formations with high compressive strength | Shale, Limestone, Dolomite, Anhydrite | 4~6 |
| Hard,dense and abrasive formations with ultra-high compressive strength | Siltstone, Sandstone, Mudstone | 6~8 | ||
| Extremely Hard | 8 | Ultra hard and abrasive formations | Quartzite, Lgneous rock | ≥8 |
API Great 2 7/8''--17 1/2'' PDC BIT/Diamond Bit without Cutters
