High Ratio Underreamer
ROCK TO ROCK P&A SOLUTION
The ProMILL Underreamer is designed to enlarged wellbore sections up to 100% of the pilot diameter. The tool has a long reach of arms relative to the tool body diameter. This allows it to drift through the narrow casing restriction easily and then open the hole to the minimum half inch diameter over the original hole size.
Applications:
- Plug and abandonment (P&A) operations requiring rock-to-rock isolation
- Casing scraper
- Removing excess cement, filter cake and enlarging open hole to expose virgin formation
High Ratio expansion with multiple cutter arms
The PMUR is designed with PDC cutters that are capable of underreaming cement or variable formations in different sizes. A simple change of arms is required to achieve this.
Activation
The PMUR can be activated downhole by dropping a ball or using flow. As the tool activates three cutter arms expand and begin underreaming. The tool remains open as long as a minimum pressure drop is maintained.
Document Downloads
| Title | Link |
|---|---|
| Red Baron Catalog | |
| K Master 8200_ESSA_Congo Performance Bulletin | |
| K Master_SectMill Performance Bulletin | |
| TruEdge_ESSA_NorthSea Performance Bulletin | |
| TruEdge_ESSA_Netherlands Performance Bulletin | |
| TruEdge Milling & Cutting in Qatar – Performance Bulletin | |
| TruEdge News Release RUS | |
| Section Mill Specification Sheet | |
| K Master_Section Mill Factsheet | |
| Hydraulic Pipe Cutter Factsheet | |
| TruEdge News Release | |
| TruEdge News Release SPN | |
| TruEdge News Release PRG | |
| Well Abandonment Brochure |
Benefits
- Enlarges wellbore sections beyond the original drilled hole size
- Single trip BHA that can simultaneously mill a section and underreamed in a single run
- Remains dormant during section milling operations with ball-drop activation when required
- PDC cutter arms capable of underreaming variable formations
- As part of the ProMILL* system, the ProMILL Underreamer reduces rig time by eliminating additional trips to underream after completing a section milled window
Insert Options:
- Millmaster (P5): Standard grade offering for all milling applications
- WavEdge: High-quality inserts with improved ROP
- TruEdge: Premium grade with improved ROP, high durability, and wear resistance
