IADC 111 – 637 // TCI & Milled
IADC Tricone Rotary Rock Drill Bits
Precision Rock Formations: Soft Silt to Abrasive Granite & Basalt
Engineering Overview & Purpose
KD Sondaj supplies heavy-duty IADC tricone roller cone drill bits ranging from soft-formation milled tooth bits (IADC 111–217) to high-wear tungsten carbide insert (TCI) bits (IADC 517–637) with sealed journal bearings for extended bit life.
Field Applications
- ✓ Deep rotary water well boreholes
- ✓ Geothermal exploration and high-temperature drilling
- ✓ Surface casing holes and deep coring operations
Geological Stratum Compatibility:
From soft clays and gravels to medium abrasive sandstones and hard granites.
Technical Specifications Table
| Engineering Parameter | Certified Rating / Metric |
|---|---|
| IADC Matkap Sınıfı | IADC 111 through IADC 637 Series |
| Kesici Yapı | Tungsten Carbide Inserts (TCI) & Steel Milled Tooth |
| Çap Aralığı | 3 7/8" to 26" (98 mm to 660 mm) |
| Yatak Tipleri | Sealed Journal Bearings, Roller Bearings, Air Bearings |
| Geyç (Çap) Koruması | Full Tungsten Carbide Insert Hardfacing on Gauge |
Engineering Q&A Direct Answers
Q: Which drill bit types are used for different geological formations?
A: Soft formations (clay, marl) utilize long-tooth milled bits (IADC 111-117) for fast penetration. Medium-hard formations use chisel-shaped TCI inserts (IADC 517-537). Hard, abrasive rock (granite, basalt) requires compact conical TCI bits (IADC 617-637) with continuous crushing action.