Wholesale API rotary roller rock drill bits in the stock from China factory is for geothermal well drillin We speiallize in designing ,manufacturing and marketing of vairous high quality tricone bits for various petroleum drilling activities. We can offer TCI bits in avariety of sizes (from 3 3/8" to 26") and all most of IADC codes. Welcome to visit our factory and we alos can supply our company's video for your reference! We would like to cooperate with you in future
5 7/8 (149mm) IADC537 is one regular diameter in geothermal well drilling in Japan,Korea,Ethiopia,USA,drillers use normal direction mudfluid circulation or reverse circulation.Reverse circulation drilling has very high rate in clearing rock chipes in hole bottom, the drilling speed is very fast in drilling pebbles, rock chips are circulated to ground directly other than breaking into very small chips.| Basical Specification | |
| Size of Rock Bit | 5 7/8 inches |
| 149.2 mm | |
| Bit Type | TCI Tricone Bit |
| Thread Connection | 3 1/2 API REG PIN |
| IADC Code | IADC 537G |
| Bearing Type | Journal Sealed Bearing with Gauge Protection |
| Bearing Seal | Elastomer or Rubber/ Metal |
| Heel Protection | Available |
| Shirttail Protection | Available |
| Circulation Type | Mud Circulation |
| Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
| Nozzles | Central Jet Hole |
| Operating Parameters | |
| WOB (Weight On Bit) | 15,054-33,480 lbs |
| 67-149KN | |
| RPM(r/min) | 50~220 |
| Formation | Medium formation with low compressive strength,such as medium,soft shale,medium soft limestone,medium soft limestone,medium soft sandstone, medium formation with harder and abrasive interbeds,etc. |
