Description
3″ (76.2mm) IADC 617G Single Cone Bit
Durable Single Cone Rock Bit for Hard Formations, High-Temperature & Deep Well Drilling
Bit Type: Single Cone Bit
Size: 3 in / 76.2 mm
Bearing: Journal Bearing
Total Teeth: 28
Key Performance Advantages for Field Engineers & Rig Managers:
- Optimized Single Cone Design: Specially built for sidetracking, slim-hole drilling, reaming, and complex downhole conditions where traditional multi-cone bits face spatial limitations.
- Heavy-Duty Journal Bearing: Sealed high-load journal bearing structure engineered to withstand severe dynamic stress, extreme well temperatures, and high-speed motor operations.
- Enhanced Gage Protection (“G”): Features additional tungsten carbide inserts along the heel and gage area to maintain full hole diameter and extend overall bit service life.
Product Overview & Technical Description
The 3″ (76.2mm) IADC 617G Single Cone Bit is a specialized slim-hole drilling tool engineered for medium-hard to hard formations with high compressive strength. Unlike standard tricone bits, the single cone architecture provides unique cutting kinematics, allowing higher stability and durability in restricted downhole environments.
Classified under IADC 617G, this bit features 28 premium tungsten carbide inserts (TCI) designed to deliver strong crushing and chipping cutting action in tough rock layers. With a robust journal bearing system and additional “G” gauge protection, it is capable of performing reliably under demanding conditions including rotary drilling, motor drilling, deep well operations, and high-temperature environments.
Technical Specifications — Single Cone Bit 3″ 617G
| Parameter | Specification Value | Engineering Context / Notes |
|---|---|---|
| Bit Type | Single Cone Bit | Ideal for slim hole, sidetracking, and reaming operations |
| Nominal Size (Inches) | 3″ | Standard Hole Diameter |
| Nominal Size (Metric) | 76.2 mm | Metric Size Equivalent |
| IADC Code | 617 | Tungsten Carbide Insert (TCI) for Medium-Hard to Hard Formations |
| Additional Features | G | Enhanced Heel & Gauge Protection (Extra Carbide Hardfacing) |
| Drilling Conditions | Rotary, High-Temp, Deep Well, Motor Drilling | Designed for severe environmental and mechanical demands |
| Bearing Type | Journal Bearing | High-capacity sealed journal bearing for extended endurance |
| Total Teeth Count | 28 | Precision-arranged carbide inserts for maximum crushing impact |
| Weight on Bit (WOB) | 19 – 49 KN | Recommended operational force envelope |
| Rotary Speed (RPM) | 60 – 140 RPM | Optimal rotation speed envelope for efficiency and bit protection |
Field Pain Points Solved by 3″ IADC 617G Single Cone Bit
1. Pain Point: Rapid Tooth Failure in Hard Formations
Solution: Equipped with 28 high-strength tungsten carbide teeth categorized under IADC 617, providing effective rock crushing in medium-hard to hard strata without premature cutter breakage.
2. Pain Point: Severe Gauge Wear in Under-Sized Boreholes
Solution: Features “G” grade gauge protection to prevent hole tapering, ensuring a full 76.2mm hole profile throughout long drilling runs.
3. Pain Point: Bearing Breakdown Under High Heat & Motor Loads
Solution: Incorporates a heavy-duty sealed journal bearing designed to endure extreme frictional heat and dynamic downhole loads during deep well motor drilling.
4. Pain Point: Space Constraints in Reaming & Sidetracking
Solution: The single cone compact design offers high structural integrity in tight spaces, making it superior to multi-cone bits for slim-hole, pilot-hole enlargement, and sidetracking.
Recommended Operating Parameters & Guidelines
To ensure maximum ROP and service life for the 3″ (76.2mm) Single Cone Bit 617G, follow these operational best practices:
- Rotary Speed (RPM): Maintain steady rotation within 60 to 140 RPM. Adjust according to downhole motor ratings and formation hardness.
- Weight on Bit (WOB): Apply load gradually within 19 KN to 49 KN. Avoid shock impacts to preserve insert structural integrity.
- Hydraulics & Hole Cleaning: Ensure sufficient fluid flow rate to cool the journal bearing and quickly remove heavy rock cuttings from the bottom of the hole.
Frequently Asked Questions (FAQ)
