After reviewing corrosion logs of this vertical injection well, a significant anomaly was observed indicating up to 57% metal loss at 7,005 ft across a 4-1/2” 11.6# liner. In anticipation of further corrosion, it was necessary to isolate this section of casing.
Coretrax’s ReLine MNS cased hole patch system was selected to cover and mechanically isolate the corroded interval. With premium expandable connections and a 10,000psi rating, the patch length was calculated to provide optimum coverage of the compromised casing section.
The 300ft long patch was deployed in a single trip with no shoe to drill out after installation. NACE tested and H2S resistant, the patch successfully mechanically isolated the problem area allowing for well integrity to be restored. Once installed the patch was expanded to provide an ID of 3.4.16”, ensuring maximum ID for future well operations.
