Abstract: Swellable packer assemblies, and associated systems and methods are described for operation in connection with a subterranean wellbore. The swellable packer assemblies may include a shroud for maintaining a sealing element in a fully inactivated configuration until the packer assemblies reach a predetermined location in the wellbore. The shroud may be formed of a dissolvable metal material such that fluids in the wellbore may remove the shroud, and thereafter the sealing element may be rapidly expanded by exposure to fluids in the wellbore or by exposure to a trigger fluid pumped from the a surface location. The expanded sealing element may establish a seal with an outer tubular structure to isolate adjacent portions of the wellbore.

Abstract: Swellable packer assemblies, and associated systems and methods are described for operation in connection with a subterranean wellbore. The swellable packer assemblies may include a shroud for maintaining a sealing element in a fully inactivated configuration until the packer assemblies reach a predetermined location in the wellbore. The shroud may be formed of a dissolvable metal material such that fluids in the wellbore may remove the shroud, and thereafter the sealing element may be rapidly expanded by exposure to fluids in the wellbore or by exposure to a trigger fluid pumped from the a surface location. The expanded sealing element may establish a seal with an outer tubular structure to isolate adjacent portions of the wellbore.

Abstract: A downhole system and method is disclosed for sealing a previously perforated section of casing and refracturing the subterranean formation in a region of the subterranean formation remote from those regions previously fractured. The system includes a truss structure radially expandable between a contracted configuration and an expanded configuration and a sealing structure disposed radially external to the truss structure. The truss structure and the sealing structure are set in their expanded configurations so that the sealing structure is put into engagement with the perforated section of casing so as to restrict the flow of fluids from the perforated section of production tubing into the subterranean formation.

Abstract: A downhole system and method is disclosed for sealing a previously perforated section of casing and refracturing the subterranean formation in a region of the subterranean formation remote from those regions previously fractured. The system includes a truss structure radially expandable between a contracted configuration and an expanded configuration and a sealing structure disposed radially external to the truss structure. The truss structure and the sealing structure are set in their expanded configurations so that the sealing structure is put into engagement with the perforated section of casing so as to restrict the flow of fluids from the perforated section of production tubing into the subterranean formation.