OVERBURDEN DRILLING SYSTEMS
TDN SYSTEMS
OVERBURDEN DRILLING SYSTEMS
TDN SYSTEMS
TDN SYSTEMS
TDN overburden drilling systems are designed to use ring bit which is integrated to casing shoe.
This ring bit set is retrieved for multi use.
TDN SYSTEMS Specification
| Model (shoulder type) | Casing Size | Ring bit Diameter | Applicable Hammer | ||||||
| OD | ID | T | OD | ID | T | OD | OD | ||
| MM | INCH | MM | INCH | ||||||
| TDN140 | 168.0 | 148.0 | 10.0 | 6.61 | 5.83 | 0.39 | 190 | 7.48 | TG50 |
| TDN190 | 219.1 | 206.4 | 6.3 | 8.63 | 8.13 | 0.25 | 248 | 9.76 | TG60 |
| TDN280 | 323.8 | 298.8 | 12.5 | 12.75 | 11.76 | 0.49 | 352 | 13.86 | TG100 |
| TDN365 | 406.4 | 381.0 | 12.7 | 16.00 | 15.00 | 0.50 | 430 | 16.93 | TG125 |
| TDN560 | 610.0 | 586.0 | 12.0 | 24.02 | 23.07 | 0.47 | 638 | 25.12 | TG450 |
| TDN760 | 813.0 | 789.0 | 12.0 | 32.01 | 31.06 | 0.47 | 843 | 33.19 | TG550 |
| TDN1160 | 1219.2 | 1168.4 | 25.4 | 48.00 | 46.00 | 1.00 | 1255 | 49.41 | TG900 |
| TDN1260 | 1300.0 | 1268.0 | 16.0 | 51.18 | 49.92 | 0.63 | 1340 | 52.76 | TG900 |
| TDN1360 | 1420.0 | 1380.0 | 20.0 | 55.91 | 54.33 | 0.79 | 1460 | 57.48 | TG900 |
*Other size of TDN system is available upon customer's request.
