Wholesale API natural gas tricone rock drill bits with metal face sealed bearing from China factory.
IADC: 437 is TCI journal sealed bearing bit with gauge protection for soft formations with low compressive strength and high drillability.
The compressive are as following:
65-85 MPA
9,000-12,000 PSI
We can offer tricone bits in a variety of sizes (from 3” to 26”) and most of IADC Codes.
Gas main engineering geology problems of deep well drilling (abnormal formation pressure, sidewall instability, formation natural deflecting and reservoir damage, etc.) and its characteristics, prevention, and treatment mainly drilling engineering geological problems.
In the design and construction of drilling well-drilling engineering geological problem analysis and follow-up evaluation, especially to deal with the four pressure (formation pressure and collapse pressure, leakage pressure and drilling fluid column pressure), is to improve the design quality, achieve the fundamental guarantee of safe drilling smoothly.
| Basical Specification | |
| Size of Rock Bit | 8 1/2 inches |
| 215.90 mm | |
| Bit Type | TCI Tricone Bit |
| Thread Connection | 4 1/2 API REG PIN |
| IADC Code | IADC 417G |
| Bearing Type | Journal Sealed Bearing with Gauge Protection |
| Bearing Seal | Metal face sealed |
| Heel Protection | Available |
| Shirttail Protection | Available |
| Circulation Type | Mud Circulation |
| Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
| Total Teeth Count | 80 |
| Gage Row Teeth Count | 33 |
| Number of Gage Rows | 3 |
| Number of Inner Rows | 7 |
| Jounal Angle | 33° |
| Offset | 8 |
| Operating Parameters | |
| WOB (Weight On Bit) | 17,077-49,883 lbs |
| 76-222KN | |
| RPM(r/min) | 300~60 |
| Recommended upper torque | 16.3-21.7KN.M |
| Formation | Soft formation of low crushing resistance and high drillability. |