1, arc-shaped crown
2, triangle cut Cutting TSP, TSP cylindrical tooth and security both inside and outside diameter natural d
1, arc-shaped crown 2, triangle cut Cutting TSP, TSP cylindrical tooth and security both inside and outside diameter natural diamond 3, radioactive flow 4, applicable to the hardware and low-abrasive bottom coring
Bit parameter | Coring tool supporting | outer dia | inner dia | (mm) | (in) | (mm) | (in) | 148152.4 | 5-7/8"6-1/2" | 66.7 | 2-1/2" | 250P -3-4 | 211214.4 | 7-1/2"9-5/8" | 101.105 | 4-1/4" | 250P -3-4 | 310 | 12-1/4" | 133 | 5-1/4" | -3-4 |
| Recommended drilling parameters | WOB | ROP(rpm) | Displacement | (KN) | (1000 1bs) | (L/s) | (gpm) | 25-70 | 6-16 | 60-500 | 9-17 | 140-270 | 45-90 | 10-20 | 60-500 | 15-25 | 240-400 | 18-90 | 4-20 | 60-250 | 22-30 | 350-450 |
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coring bit
