Operators face significant loss of inside diameter (ID) in the course of the normal drilling process, during re-entry and deepening of existing wells, or when installing additional casing strings to remediate well problems. The industry has confronted this dilemma with innovative problem solving that stretches the boundaries of physics in the guise of solid expandable tubular technology. Successful applications have proven the technology's reliability in a variety of conditions and environments. Solid expandable tubulars continue to build a legacy as a solution to problems involving gas shut-off, subsidence repair, water shut-off, lost circulation, and remediation of wells slated for abandonment. The technology continues to evolve, leading to the single-diameter wellbore where casing diameter remains constant for the entire length of the well.