Abstract: A subsurface safety valve includes an interior bore extending along an entire length of the subsurface safety valve, a valve actuatable between an open position and a closed position, and a locking recess for securing an isolation tool within the interior bore. The isolation tool includes a locking mandrel having a fish neck disposed on an upper surface of the locking mandrel, the locking mandrel engaging the locking recess of the subsurface safety valve, and a sleeve threadedly coupled to the locking mandrel. A hydraulic valve assembly is disposed fluidly downstream of the locking recess, the hydraulic valve assembly having one or more apertures fluidly coupling an upper portion of the wellbore to a lower portion of the wellbore. A control line controls the subsurface safety valve at a surface of the wellbore.