Well Miller Scale removal 00000 JPG

Well Miller®

For Scale Removal

Introduction

Certain types of scales require a different type of approach, one more akin to milling than cleaning.

The Well Miller® for Scale Removal transforms the power of the Well Miller into a clean-out application for those scale deposits which can’t be removed effectively with standard clean-out tools. A variety of bits can be applied with varying degrees of aggression. Full bore, core bore or wire bits can be applied for effective removal of stubborn scales.

  • Challenge
    Downhole access
  • Applications
    Removal of scale, consolidated debris, hydrate
Well Miller RCB 360 00000
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Case highlight

CHALLENGE
Downhole access

A water injector was experiencing issues with carbonate scale build-ups that led to decreased injectivity. KHA1-51 was completed in 2011, as one of the deepest...

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Overview

The Well Miller® for Scale Removal transforms the power of the Well Miller® into cleaning solutions for removal of accumulations which can’t be removed effectively with brushing.

The full bore bit is ideal for attacking layers of scale that are severely reducing the ID and subsequently the production. It is designed to mill through substantial amounts of build-up and restore the tubular to full bore.

The scale core bit is designed for shaving scale sheathes from the inner walls with diamond tipped aggression. With a tighter tolerance to the ID, it is a perfect solution for removal of scale patches over long intervals.

The wire bit is developed specifically for milling scale that has settled on or inside valves within the wellbore. It is built to attack scale in irregular holes, depressions and upsets in the wellbore.

Scale milling with the Well Miller® is run in combination with the Well Tractor ® which applies the correct weight on bit and prevents reactive torque buildup on the e-line.
Well Miller Scale removal Vert 00000
Well Miller Scale removal Hori 00000

APPLICATIONS

  • Removal of scale and cement
  • Removal of salt and sulfates
  • Removal of hydrate and calcites

FEATURES

  • Passive fail-safe system
  • Modular
  • Surface read-out
  • Various bits based on objective
  • Wide range of sizes
  • Universal
  • NACE compliant

BENEFITS

  • No additional fluids required
  • Provides access to TD
  • Large range of ID’s accessible
  • Recovers the debris from the well
  • Accurate depth control
  • Operates on any e-line via DC

SPECIFICATION RANGE*

Tool OD 2 1/8” 3 1/2”
Length 10 ft 12 ft
Weight in air 70 lbs 95 lbs
Min. completion ID 2.25” 3.6"
Max. well pressure 20,000 psi 25,000 psi
Max. well temperature 302° F 338° F
Tensile strength 36,000 lbs 42,000 lbs
Compressive strength 30,000 lbs 50,000 lbs
* Dependent upon configuration