| IADC Code |
Size |
Seal |
WOB (KN) |
Rotary Speed (rpm) |
Formation |
| 115 |
2"-26" |
Rubber & Metal Seal |
0.35-0.75 |
60-180 |
Suitable for ultra soft formation with low compressive strength and high drillability, such as clay, mudstone and chalk. |
| 125 |
2"-26" |
Rubber & Metal Seal |
0.3-0.85 |
60-180 |
Suitable for soft formation with low compressive strength and high drillability, such as mudstone, plaster, salt rock, soft shale and soft limestone. |
| 215 |
2"-26" |
Rubber & Metal Seal |
0.35-0.95 |
60-150 |
Suitable for medium formation with high compressive strength, such as medium soft shale, anhydrite, Medium soft limestone,medium soft sandstone and soft formation with hard interlayer. |
| 217 |
2"-26" |
Rubber & Metal seal |
0.4-1.0 |
60-100 |
Suitable for medium formation with high compressive strength, such as medium soft shale, anhydrite, Medium soft limestone,medium soft sandstone and soft formation with hard interlayer. |
| 437 437G |
2"-26" |
Rubber & Metal seal |
0.35-0.9 |
70-240 |
Suitable for ultra soft formation with low compressive strength and high drillability, such as clay, gypsum, mudstone and soft limestone, etc. |
| 517 517G |
2"-26" |
Metal & Rubber seal |
0.35-1.0 |
60-140 |
Suitable for soft formation with low compressive strength and high drillability, such as mudstone, plaster, salt rock, soft shale and soft limestone. |
| 537 537G |
2"-26" |
Metal & Rubber seal |
0.45-1.0 |
50-120 |
Suitable for soft to medium formation with low compressive strength, such as mudstone, limestone, shale and interbeds, etc. |
| 617 617G |
2"-26" |
Metal & Rubber seal |
0.45-1.1 |
50-200 |
Suitable for medium hard formation with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc. |
| 637 637G |
2"-26" |
Metal & Rubber seal |
0.5-1.1 |
40-180 |
Suitable for medium formation with high compressive strength, such as medium soft shale, anhydrite, Medium soft limestone,medium soft sandstone and soft formation with hard interlayer. |
