A method of lining at least one part of an internal wall of a wellbore conduit, the method comprising the steps of: (a) providing at least one piece of material to be applied to the internal wall of the wellbore conduit, the piece of material having a thickness in the range of 0.10 to 0.40 mm; (b) applying adhesive (3a, 3b) onto the piece of material, thereafter rolling up or curling up the piece of material with the adhesive (3a, 3b) applied thereupon, and providing the curled or rolled up piece of material on an inserter tool; (c) inserting the inserter tool with the rolled or curled up piece of material into the conduit and running the inserter tool into the conduit to position the curled or rolled up material therein; and (d) releasing the piece of material from the inserter tool, in order to let the piece of material to at least partially uncurl or unroll, allowing the inserted piece of material to at least partially uncurl or unroll inside the conduit, utilising the adhesive (3a, 3b) to secure the piece of material in place, so as to apply the material and obtain a laminate which lines said part of the internal wall of the conduit; wherein the piece of material is configured to be flexible and resilient, such that in step d the piece of material exerts a resilient force component in response to being rolled or curled up by which the piece of material is urged to at least partially uncurl or unroll inside the conduit, in order to apply the material and obtain the laminate on said part of the internal wall of the conduit; wherein the laminate comprises a combination of the adhesive (3a, 3b) and overlapping sections of the piece of material; wherein the inserter tool comprises: a mandrel for supporting the piece of material in the curled or rolled up configuration around the mandrel; and at least one retainer arranged to retain the piece of material in the rolled or curled up configuration during insertion. (a) providing at least one piece of material to be applied to the internal wall of the wellbore conduit, the piece of material having a thickness in the range of 0.10 to 0.40 mm; (b) applying adhesive (3a, 3b) onto the piece of material, thereafter rolling up or curling up the piece of material with the adhesive (3a, 3b) applied thereupon, and providing the curled or rolled up piece of material on an inserter tool; (c) inserting the inserter tool with the rolled or curled up piece of material into the conduit and running the inserter tool into the conduit to position the curled or rolled up material therein; and (d) releasing the piece of material from the inserter tool, in order to let the piece of material to at least partially uncurl or unroll, allowing the inserted piece of material to at least partially uncurl or unroll inside the conduit, utilising the adhesive (3a, 3b) to secure the piece of material in place, so as to apply the material and obtain a laminate which lines said part of the internal wall of the conduit; a mandrel for supporting the piece of material in the curled or rolled up configuration around the mandrel; and at least one retainer arranged to retain the piece of material in the rolled or curled up configuration during insertion.