The metal seal series is a highly reliable drill bit suitable for vertical and directional wells. This series of drill bits not only inherits the superior bearing quality of the conventional HJ series drill bits, but also adjusts the cutting structure, alloy tooth materials, and steel tooth welding materials to improve the ability of the drill bits to adapt to various complex geological formations.
| Bits Size |
Model |
API Thread size
(Inch) |
Recommended tightening torque
(KN/M) |
|
| Inch | mm | |||
| 5-7/8″ | 149.2 | HJ437GL、HJ517GL、HJT517GL、HJ537GL、HJT537GH、HJ617G | ||
| 6″ | 152.4 | HJ437GL、HJ517GL、HJT517GL、HJ537GL、HJT537GH、HJ617G、HJ637G | ||
| 8-1/2″ | 215.9 | HJT117、HJT137、HJ417、HJ437、HJT447G、HJ517G、HJT517GL、HJS517G、HJ537G、HJT537GH、HJS537GL、HJ547G、HJ617G、HJT617GH、HJ627G、HJ637G、HJT637GH、HJ737G、HJT737GH |
4-1/2″ |
16.3～21.7 |
| 8-3/4″ | 222.3 | HJT117、HJT517G | ||
| 9-1/2″ | 241.3 | HJ437、HJ517G、HJT517GL、HJ537G、HJT537GL、HJ617G、HJT617GH、HJ637G、HJT637GH |
6-5/8″ |
37.9～43.3 |
| 9-5/8″ | 244.5 | HJ537G | ||
| 9-7/8″ | 250.8 | HJT117、HJ417、HJ437 | ||
| 10-5/8″ | 269.9 | HJT127、HJT137、HJT517G | ||
| 12-1/4″ | 311.2 | HJ117、HJT117G、HJ127、HJT127G、HJ137、HJ417、HJ437、HJ517G、HJS517G、HJ537G、HJS537G、HJ617G、HJ637G、 | ||
| 17-1/2″ | 444.5 | HJ517G、HJ527G、HJ537G | 7-5/8″ | 46.1～54.2 |
