Wellbore Cleanup

Approximately 32% of failed completion operations results from debris being left in the wellbore.

Consider all of the associated costs of poor Wellbore Cleanup (WBCU) – additional logistics, lost operation time, additional time for service providers on the rig, and potential for damage to the well. In many cases, the overall Non-Productive Time (NPT) can run into the millions of dollars or result in the loss of the well. Even if the consequences do not result in NPT or loss of the well, small size particulates left in the well can block pore throats and reduce productions levels – settled solids can also reduce pay zone size.

Cost are not comparable when looking at these additional costs that come with a poor Wellbore Cleanup versus the costs of performing an exemplary QMax Wellbore Cleanup that includes both mechanical and chemical solutions. The combination of QMax mechanical and chemicals solutions will minimize debris associated NPT and reduce, if not eliminate, formation damage, which increases production output and the lifespan of the well.  The QMax offerings include the following and much more:


  • Casings and Liners
  • Scraper Tools
  • Bristle Brushes
  • High Strength Magnets
  • Debris Retention Tools
  • High Flow Annular Circulation Tools
  • Inflow and Positive Test Tools
  • Riser Debris Tools and Junk Baskets
  • BOP Jetting Tools


  • Solvents
  • Surfactants
  • Solvent and Surfactant Combinations
  • Biocides
  • Corrosion Inhibitors
  • Oxygen Scavengers

These tools and applied technologies combined with the correct BHA design, Hydraulics Modelling, and Torque and Drag Analysis completed with MaxSite Hydraulics will maximize the effectiveness of the wellbore cleanout. In addition, many of these tools can be used in remedial work, such as fishing and casing exits, further reducing debris associated NPT.

QMax Value for Wellbore Cleanup is delivered by a team of specialists who concentrate only in WBCU systems – with a minimum of 5 years experience in this particular field for each member of the team.

For more information, please contact us.