The main goal of this project is to develop an annular isolation system capable to withstand geothermal downhole conditions and mitigate the problems experienced by conventional packers in FORGE wells. This large-scale set-up report is about the system that has been constructed to be able to test full size equipment to geothermal project requirements, and takes place in the small-scale experiments phase of the project. More specifically, the design and construction of the full-scale test setup.