cement replacement - long term zonal isolation packer

Long term cement backup or replacement

Ensure annular integrity

Challenge

  • Improve the reliability of cemented casing by using a steel barrier as a back-up
  • Avoid cement contamination of the formation.

Solution

To ensure the integrity of an annulus the cement seal can be backed up with a steel barrier between the casing and borehole. This can be set below or above the cement. It may even be used to replace cement.