fig6 for a brief description of the method of the implementation of the system of the present invention the basic method is described in terms both of the preinsertion assembly of the inner tubular element and the expansion of the sealing element once properly positioned the process begins at step 110 wherein an annular depression ad is formed in the wall of the inner tubular element as indicated above there are a number of different well known methods for deforming the wall of the tubular element into the configuration described herein step 112 involves filling the annular depression with the partially compressible fluid pcf various fluid compositions are anticipated as being appropriate for the structure and function of the tool described herein the primary characteristics of the fluid critical to operation in conjunction with the system of the present invention are the fluid 39 s compressibility and its retention of a sufficient residual energy under pressure it is anticipated that the partially compressible fluid element may be either a single material such as a low density polyethylene or other thermoplastic compound or may be a combination of an elastomer such as silicon rubber and silicon fluid or other high temperature elastomers and fluids or fluid like materials such as microspheres in any event this material is positioned within the depression formed in the wall of the inner tubular element so as to completely fill the cavity formed thereby at step 114 the annular depression with the partially compressible fluid placed therein is covered with a malleable ductile sleeve ms the method for placement positioning and attachment of the malleable ductile sleeve in this manner is described above various materials for the malleable ductile sleeve are anticipated with the critical requirements relating to malleability.