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
TitleLink
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

Features

Plug & Abandonment operations to provide rock-to-rock isolation

Remove excess cement, filter cake and open hole to expose virgin formation

PDC cutter arms capable of underreaming variable formations

Reduces rig time by eliminating additional trips to underream after completing a section milled window