This paper details the technical development & implementation of a Coiled Tubing (CT) deployed, expandable internal metal casing patch. The driver for the development of the technology was to introduce an internal casing patch system for deployment in 7" tubing, designed to extend the completion life and delay a full workover operation. The compliant patch would provide a substantive localised tubing repair (e.g. water shut-off, leak repair, patch corroded pipe) with minimal internal diameter restriction to optimise access for future well interventions, and hence minimise the restriction to oil production (or water injection).

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