Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Restoration of annular zonal isolation using localized casing expansion (LCE) technology: evaluation of Local Expander tool performance for treatment of dual cemented casing sections
Abstract Ensuring long-term zonal isolation integrity along wells is essential for sustainable subsurface applications such as geothermal energy production, hydrogen storage, and carbon sequestration. When cemented wellbore annuli become transmissive, effective remediation methods are required. Localized Casing Expansion (LCE) is an emerging technique that restores sealing by plastically deforming the casing, compressing the annulus, and closing defects in the cement sheath. While LCE has demonstrated effectiveness …