Milling Cone: Precision Window Cutting and Repair Solution
The Window Milling Challenge
Traditional window milling operations face:
-Multiple tool requirements for different milling phases
-Poor window quality requiring additional reaming passes
-Short tool life in abrasive casing materials
-Inconsistent window geometry affecting subsequent operations
Our milling cone delivers:
✅ Single-trip window completion with integrated cutting phases
✅ Superior window quality with smooth, precise geometry
✅ Extended service life through advanced material technology
✅ Consistent performance across various casing grades
Progressive Milling Technology
Three-Phase Cutting Action
| Milling Phase | Cutting Section | Function | Result |
| Initial Cutting | Cone Head | Creates upper window | Pilot opening established |
| Window Formation | Cylindrical Section | Develops full window | Complete casing penetration |
| Finishing & Dressing | Transition & Gauge | Smooths and enlarges | Precision window geometry |
Technical Specifications
| Parameter | Specification |
| Size Range | 4-3/4″ to 13-3/8″ OD |
| Body Length | Extended design for stability |
| Cutting Structure | Tungsten carbide inserts |
| Gauge Protection | Hardfaced wear pads |
| Connections | API REG, IF, FH |
| Materials | 4145HM with specialized heat treatment |
| Compliance | API Spec 7-1, ISO 9001:2015 |
Working Principle & Advantages
-Integrated Milling Process
Phase 1: Initial Penetration
Cone head initiates contact with casing
Progressive cutting establishes pilot window
Controlled penetration prevents tool damage
Phase 2: Window Development
Cylindrical section expands initial opening
Full circumference cutting completes penetration
Chip management through optimized flute design
Phase 3: Finishing Operations
Transition zone enlarges and smoothes window
Gauge section maintains window diameter
Final dressing ensures clean edges
-Operational Benefits
✅ Single-Trip Efficiency
Complete window in one run vs. multiple tools
Save 12-18 hours of rig time per window
✅ Superior Window Quality
Smooth window profile reduces drag
Optimal geometry for tool passage
Minimal burrs or sharp edges
✅ Extended Tool Life
Advanced carbide technology provides 3x longer life
Even wear distribution across all sections
Field-replaceable components for cost efficiency
Field Applications
Sidetrack Operations: Create precise windows for directional drilling
Window Repair: Restore damaged or irregular window profiles
Multi-Lateral Wells: Multiple window creation in single casing string
Casing Exit: Reliable initiation points for wellbore departures
