in the tubing wall normal operation of the downhole tool can then resume application_number US 48117109 A description fig1 shows a hydraulically operated downhole tool 10 that is surface operated with a control line 12 that has been damaged as indicated by a hole 14 typically the control line 12 is secured to a tubular 16 that runs from the well surface to the downhole tool 10 using one or more connected strings arrows 18 represent flow out the hole 14 as the repair tool 20 is advanced in the control line 12 the repair tool 20 has a downhole or leading end 22 and a trailing end 24 the structure is basically a tubular body 23 that is preferably closed at leading end 22 with a breakable member such as a rupture disc 26 that is illustrated schematically as an option there can be a small conical swage either ahead of the schematically illustrated rupture disc 26 or the swage 50 can also be on the exterior wall of the tubular body 23 as shown in fig6 opposed seals 28 and 30 are mounted on the exterior of the tubular body 23 with seals 28 retaining pressure going uphole toward end 24 and seal 30 retaining pressure in the downhole direction toward end 22 located externally to the tubular housing 23 and spaced uphole from seal 30 is a reactive seal 32 that is run in at a smaller dimension and gets larger when exposed to fluid like water to enlarge and seal.