Product Details:
Payment & Shipping Terms:
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Bearing Type: | Sealed Friction Bearing With Gauge Protection | Cutting Material: | TCI |
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Standard: | API-7-1, ISO 9001:2008 | Name: | HDD Drilling Tools |
IADC: | 517 | Supplementary Features: | G : Reinforced Gauge Protection |
Insert Shape: | Chisel-shaped | Formation: | Medium Hard |
Package: | Plywood Boxes | ||
High Light: | FA Series Water Well Drill Bits,311.2mm hdd drill bits,HDD Drill Bits IADC 517G |
311.2mm , FA Series , IADC 517G , Rock Bit, Water Well Drilling Bit , HDD Drilling
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
Types & IADC Code |
417 |
437 447 |
517 527 |
537 547 |
617 627 |
637 |
|
WOB |
KN/mm(Bit Dia.) |
0.4~0.9 |
0.4~0.9 |
0.35~1.0 |
0.5~1.0 |
0.6~1.1 |
0.7~1.2 |
Lb/in. (Bit Dia.) |
2285~5142 |
2285~5142 |
2000~5714 |
2857~5714 |
3428~6285 |
4000~6857 |
|
Rotation Speed (Rpm) |
140~60 |
140~60 |
125~50 |
110~50 |
100~40 |
80~40 |
Teeth and Tungsten Carbide Insert Buttons
- Length and geometry relate the rock strength
- Size of the cone and bearing structure affect the teeth
- Teeth design criteria are:
- Spacing and interfitting of teeth governed by tooth strength, depth and included angle
- Shape and length, dictated by formation characteristics
- Types of teeth, milled or inserted
- Log slider and widely spaced teeth used for soft rock
- Long teeth allow results in breaking greater volume
- Wide spacing allows easy removal of drilled cuttings
- The included angle for soft rock from 39 to 42
- Medium hard would have a moderate number of teeth and 43 to 45 included angle
- Hard rocks need 45 to 50 included angle
- Milled teeth are faced with hardening metal to reduce wear
- Milled tooth bits are suitable for soft formation
- Insert are used for hard formation
- There are several types of insert to suit the hardness
- Chisel-shaped for soft rock
- Round or spherical for medium and hard rocks
Contact Person: Jade
Tel: 0086-10-63405086
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