Wholesale API rotary tricone drilling bits in the stock from China factory is for deep oil well. Bit Description: IADC: 537 - TCI journal sealed bearing bit with gauge protection for soft to medium soft formations with low compressive strength . Compressive Strength: 85 - 100 MPA 12,000 - 14,500 PSI Ground Description: Medium hard and abrasive rocks such as sandstones with streaks of quartz, hard limestone or chert, hematite ores, hard, well-compacted abrasive rock such as: sandstones with quartz binder, dolomites, quartzite shales, magma and metamorphic coarse grained rocks. We can offer TCI bits in avariety of sizes (from 3" to 26") and all most of IADC codes.
7 7/8" Tricone Bits is a regular diameter for HDD pilot hole, this model has 3 lateral jet nozzles, the hydraulic performance is better than central jet hole in clearing rock chips especially in drilling sticky rocks. Density and height of quality tungsten carbide inserts are optimized designed to reach the best ROP ( Rate of Penetration ), the bearing is sealed by Elastomer O-ring, and arms are armored by TC inserts.| Basical Specification | |
| Size of Rock Bit | 7 7/8 inches |
| 200mm | |
| Bit Type | TCI Tricone Bit |
| Thread Connection | 4 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 | Three Nozzles |
| Operating Parameters | |
| WOB (Weight On Bit) | 20,223-44,940 lbs |
| 90-200KN | |
| 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. |
